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		<item>
		<title>autentifikasi login proxy (ncsa_auth)</title>
		<link>http://bayuramadhan.wordpress.com/2010/07/31/ncsa_auth/</link>
		<comments>http://bayuramadhan.wordpress.com/2010/07/31/ncsa_auth/#comments</comments>
		<pubDate>Sat, 31 Jul 2010 03:14:26 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[IT]]></category>
		<category><![CDATA[autentifikasi]]></category>
		<category><![CDATA[ncsa]]></category>
		<category><![CDATA[proxy]]></category>
		<category><![CDATA[squid]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=184</guid>
		<description><![CDATA[hmm,, langsung aja deh.. misalnya pas mau ngenet ada browser yang minta login seperti ini : ini ditujukan untuk mengamankan kalo-kalo ada orang yang ingin mengakses jaringan internet yang berada dirumah kita atau dikantor.  cara bikinnya begini. sediakan satu mesin untuk dijadikan server proxy boleh cpu atau laptop yang kita pakai. kebetulan os yang dipakai [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=184&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>hmm,, langsung aja deh.. misalnya pas mau ngenet ada browser yang minta login seperti ini :</p>
<p><a href="http://bayuramadhan.files.wordpress.com/2010/07/awal1.jpg"><img class="alignnone size-full wp-image-186" title="autentifikasi" src="http://bayuramadhan.files.wordpress.com/2010/07/awal1.jpg?w=527&#038;h=392" alt="" width="527" height="392" /></a></p>
<p>ini ditujukan untuk mengamankan kalo-kalo ada orang yang ingin mengakses jaringan internet yang berada dirumah kita atau dikantor.  cara bikinnya begini.</p>
<ol>
<li> sediakan satu mesin untuk dijadikan server proxy boleh cpu atau laptop yang kita pakai. kebetulan os yang dipakai adalah ubuntu lucid jadi yang lain menyesuaikan <img src='http://s0.wp.com/wp-includes/images/smilies/icon_biggrin.gif' alt=':D' class='wp-smiley' /> .</li>
<li>trus install deh proxynya. <strong>#apt-get install squid</strong></li>
<li>bikin folder cache di /usr. <strong>#mkdir /usr/cache</strong></li>
<li>bikin file <strong>access.log</strong>,<strong> swap.log</strong>,<strong> cache.log</strong> di <strong>/var/log</strong>.</li>
<li>jangan lupa bikin permisionnya juga di file dan folder yang dibuat.</li>
<li>setelah itu bikin user squid dan kasih passwordnya. <strong>#adduser squid</strong></li>
<li>setelah itu bikin file password yang nanti digunakan oleh client untuk memasukkan username dan password. <strong>#htpasswd /etc/squid/user_pass bayu</strong></li>
</ol>
<p>setelah itu tinggal cari deh ncsa_auth. pake find atau locate. kalo di lucid ada di /usr/lib/squid/ncsa_auth.  jika semua berjalan dengan lancar nih ya, baru ke settingan squidnya. <strong>#pico /etc/squid/squid.conf. </strong>settingan yang saya pakai cuma ini :</p>
<p><em>http_port 10.14.200.60:7786<br />
logfile_rotate 10<br />
maximum_object_size 1024 KB<br />
maximum_object_size_in_memory 32 KB<br />
visible_hostname bay_buw@yahoo.co.id</em></p>
<p><em>cache_dir diskd /usr/cache 1600 4 256 Q1=70 Q2=50<br />
cache_mem 512 MB<br />
cache_swap_low 80%<br />
cache_swap_high 100%<br />
cache_effective_user squid<br />
cache_effective_group squid<br />
cache_mgr b4_y0u<br />
cachemgr_passwd 123456<br />
cache_access_log /var/log/access.log<br />
cache_swap_log  /var/log/swap.log<br />
cache_log /var/log/cache.log<br />
cache_store_log none</em></p>
<p><em>#extension_methods REPORT MERGE MKACTIVITY CHECKOUT<br />
acl QUERY urlpath_regex cgi-bin \? localhost<br />
no_cache deny QUERY<br />
hierarchy_stoplist cgi-bin ?<br />
half_closed_clients off</em></p>
<p><em>#&#8212;blok url<br />
#acl whitelist url_regex -i &#8220;/etc/proxy/whitelist.txt&#8221;<br />
#acl blacklist url_regex -i &#8220;/etc/proxy/blacklist.txt&#8221;<br />
#http_access allow whitelist<br />
#http_access deny blacklist<br />
#&#8212;speed up<br />
refresh_pattern ^http://www.facebook.com/.* 360 95% 4320<br />
refresh_pattern ^http://www.gmail.com/.* 360 95% 4320<br />
refresh_pattern ^http://*.yahoo.*/.* 360 95% 4320<br />
refresh_pattern ^http://www.detik.com/.* 360 95% 4320<br />
refresh_pattern ^http://www.kaskus.us/.* 360 95% 4320<br />
refresh_pattern ^ftp: 10080 95% 241920<br />
refresh_pattern \.gif 4320 50% 43200<br />
refresh_pattern \.tif 4320 50% 43200<br />
refresh_pattern \.jpg 4320 50% 43200<br />
refresh_pattern \.jpeg 4320 50% 43200<br />
refresh_pattern . 180 95% 120960<br />
ipcache_size 2048<br />
ipcache_low 98<br />
ipcache_high 99<br />
log_fqdn off<br />
log_icp_queries off<br />
quick_abort_min 0<br />
quick_abort_max 0<br />
quick_abort_pct 98<br />
shutdown_lifetime 10 seconds<br />
memory_pools off<br />
icp_hit_stale on<br />
query_icmp on<br />
#reload_into_ims on<br />
pipeline_prefetch on<br />
vary_ignore_expire on</em></p>
<p><em>#&#8212; acl<br />
acl all src 0.0.0.0/0.0.0.0</em></p>
<p><em>acl multimedia url_regex -i \.mp3$ \.rm$ \.mpg$ \.mpeg$ \.avi$ \.dat$ \.wmv$ \.3gp$</em></p>
<p><em>request_body_max_size 1 MB</em></p>
<p><em>#&#8211;autentifikasi squid<br />
auth_param basic program /usr/lib/squid/ncsa_auth</em><em> /etc/squid/user_passwd<br />
auth_param basic children 5<br />
auth_param basic credentialsttl 2 hours<br />
auth_param basic casesensitive off<br />
acl ncsa_users proxy_auth REQUIRED<br />
http_access allow ncsa_users</em></p>
<p><em>acl manager proto cache_object<br />
http_access allow manager</em></p>
<p><em>http_access deny all<br />
###############################################################################</em></p>
<p>setelah selesai merubah settingan dari squid.conf maka tinggal menjalan squid nya.</p>
<ol>
<li>ketikkan <strong>#squid -z</strong></li>
<li>trus <strong>#squid -k reconfigure</strong></li>
<li>setelaih itu <strong>#squid -d 1 -D</strong></li>
</ol>
<p>jika kita ingin melihat apakah squid sudah berjalan atau belum tinggal dilihat dengan <strong>#ps -aux | grep squid. </strong>jika ada squid atau hasilnya seperti gambar dibawah ini maka squid dengan ncsa sudah berjalan tinggal dicoba pada client.</p>
<p><a href="http://bayuramadhan.files.wordpress.com/2010/07/squid.jpg"><img class="alignnone size-full wp-image-189" title="squid" src="http://bayuramadhan.files.wordpress.com/2010/07/squid.jpg?w=585&#038;h=279" alt="" width="585" height="279" /></a></p>
<p>selesai pembuatan proxy yang terautentifikasi. settingan pada client (browser firefox)  tinggal memasang proxynya pada <strong>option-&gt;network-&gt;setting. </strong>setelah itu pilih manual proxy isikan sesuai dengan http_port pada squid.conf</p>
<p><a href="http://bayuramadhan.files.wordpress.com/2010/07/setting.jpg"><img class="alignnone size-full wp-image-190" title="setting" src="http://bayuramadhan.files.wordpress.com/2010/07/setting.jpg?w=496&#038;h=536" alt="" width="496" height="536" /></a></p>
<p>selesai sampai disitu. hehehe.. selain pake ncsa_auth bisa juga pake mysql_auth, php cli, dll. mungkin di artikel berikutnya aja.. <img src='http://s0.wp.com/wp-includes/images/smilies/icon_biggrin.gif' alt=':D' class='wp-smiley' /> </p>
<p>selamat mencoba ya.. <img src='http://s0.wp.com/wp-includes/images/smilies/icon_biggrin.gif' alt=':D' class='wp-smiley' /> </p>
<p>kalo ada salah sung komen dan kritiknya ya.. soalnya saya masih newbie,, <img src='http://s0.wp.com/wp-includes/images/smilies/icon_biggrin.gif' alt=':D' class='wp-smiley' /> </p>
<br /> Tagged: <a href='http://bayuramadhan.wordpress.com/tag/autentifikasi/'>autentifikasi</a>, <a href='http://bayuramadhan.wordpress.com/tag/ncsa/'>ncsa</a>, <a href='http://bayuramadhan.wordpress.com/tag/proxy/'>proxy</a>, <a href='http://bayuramadhan.wordpress.com/tag/squid/'>squid</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/bayuramadhan.wordpress.com/184/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/bayuramadhan.wordpress.com/184/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/bayuramadhan.wordpress.com/184/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/bayuramadhan.wordpress.com/184/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/bayuramadhan.wordpress.com/184/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/bayuramadhan.wordpress.com/184/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/bayuramadhan.wordpress.com/184/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/bayuramadhan.wordpress.com/184/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/bayuramadhan.wordpress.com/184/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/bayuramadhan.wordpress.com/184/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/bayuramadhan.wordpress.com/184/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/bayuramadhan.wordpress.com/184/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/bayuramadhan.wordpress.com/184/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/bayuramadhan.wordpress.com/184/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=184&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>2</slash:comments>
	
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			<media:title type="html">bayuramadhan</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/awal1.jpg" medium="image">
			<media:title type="html">autentifikasi</media:title>
		</media:content>

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			<media:title type="html">squid</media:title>
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			<media:title type="html">setting</media:title>
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	</item>
		<item>
		<title>Data Encryption Standard (DES) eps.2</title>
		<link>http://bayuramadhan.wordpress.com/2010/07/23/des2/</link>
		<comments>http://bayuramadhan.wordpress.com/2010/07/23/des2/#comments</comments>
		<pubDate>Fri, 23 Jul 2010 07:06:22 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[IT]]></category>
		<category><![CDATA[C#]]></category>
		<category><![CDATA[dekripsi]]></category>
		<category><![CDATA[DES]]></category>
		<category><![CDATA[enkripsi]]></category>
		<category><![CDATA[kriptografi]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=161</guid>
		<description><![CDATA[nah sekarang masuk ke proses 16 kali enchipering karena kunci internalnya dan hasil permutasi matriks IP  sudah didapatkan.  kemaren udah ditulis diepisode 1. yang episode 1 ada dimari. secara lengkap bagan DES adalah seperti ini : ini dia bagian terumit dari DES. gambar diatas ada dua bagian, yang kanan tuh proses DES lengkap sedangkan yang [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=161&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>nah sekarang masuk ke proses 16 kali enchipering karena kunci internalnya dan hasil permutasi matriks IP  sudah didapatkan.  kemaren udah ditulis diepisode 1. yang episode 1 ada <a title="DES episode 1" href="http://bayuramadhan.wordpress.com/2010/07/21/des/" target="_blank">dimari</a>.</p>
<p>secara lengkap bagan DES adalah seperti ini :</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/des2.jpg"><img class="size-full wp-image-163 aligncenter" title="des" src="http://bayuramadhan.files.wordpress.com/2010/07/des2.jpg?w=689&#038;h=816" alt="" width="689" height="816" /></a></p>
<p>ini dia bagian terumit dari DES. gambar diatas ada dua bagian, yang kanan tuh proses DES lengkap sedangkan yang kiri adalah rincian dari proses fungsi F. proses enchipering dimulai pada saat hasil dari permutasi matriks IP dibagi dua yaitu Lo dan Ro masing-masing 32 bit. setelah itu dilakukan rumus dibawah ini untuk hasil putaran pertama (disebut L1 dan R1):</p>
<p style="text-align:center;"><em>L<sub>i</sub> </em>= <em>R<sub>i </sub></em><sub>– 1 </sub></p>
<p style="text-align:center;"><em>R<sub>i</sub> </em>= <em>L<sub>i </sub></em><sub>– 1</sub> xor <em>f</em>(<em>R<sub>i </sub></em><sub>– 1</sub>, <em>K<sub>i</sub></em>)</p>
<p style="text-align:left;">misalnya hasil dari permutasi IP adalah 1111111111111111111111111111111100000000000000000000000000000000 maka begini jika di pisah menjadi L0 dan R0</p>
<p style="text-align:left;"><span id="more-161"></span></p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/contoh.jpg"><img class="size-full wp-image-164 aligncenter" title="contoh" src="http://bayuramadhan.files.wordpress.com/2010/07/contoh.jpg?w=504&#038;h=153" alt="" width="504" height="153" /></a></p>
<p style="text-align:left;">jadi untuk mendapatkan L1 itu tinggal copas dari R0. sedangkan R1 di dapatkan dari L0 di-xor-kan dengan fungsi F. bagan fungsi F bisa dilihat diatas. fungsi F ini memerlukan R0 dan kunci internal pertama (K1).</p>
<p style="text-align:left;">didalam fungsi F ini nantinya R0 akan diekspansi dari 32 bit menjadi 48 bit. cara mengekspansinya adalah dengan melakukan permutasi oleh matriks E :</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="297" align="center">
<tbody>
<tr>
<td width="37" valign="top">32</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">9</td>
</tr>
<tr>
<td width="37" valign="top">8</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">16</td>
<td width="37" valign="top">17</td>
</tr>
<tr>
<td width="37" valign="top">16</td>
<td width="37" valign="top">17</td>
<td width="37" valign="top">18</td>
<td width="37" valign="top">19</td>
<td width="37" valign="top">20</td>
<td width="37" valign="top">21</td>
<td width="37" valign="top">20</td>
<td width="37" valign="top">21</td>
<td width="37" valign="top">22</td>
<td width="37" valign="top">23</td>
<td width="37" valign="top">24</td>
<td width="37" valign="top">25</td>
</tr>
<tr>
<td width="37" valign="top">24</td>
<td width="37" valign="top">25</td>
<td width="37" valign="top">26</td>
<td width="37" valign="top">27</td>
<td width="37" valign="top">28</td>
<td width="37" valign="top">29</td>
<td width="37" valign="top">28</td>
<td width="37" valign="top">29</td>
<td width="37" valign="top">30</td>
<td width="37" valign="top">31</td>
<td width="37" valign="top">32</td>
<td width="37" valign="top">1</td>
</tr>
</tbody>
</table>
<p>cara permutasi sudah ada di episode 1. hasil dari permutasi matriks E di-xor-kan oleh kunci internal pertama. hasil xor ini nantinya di sebut oleh vektor A. selanjutnya vektor A ini bagi-bagi menjadi 8 bagian masing-masing 6 bit. dari bagian yang paling kiri disebut A1 dan paling kanan A8.  nah nanti A1-A8 ini disubtitusikan oleh S-box yang banyaknya juga ada 8 kotak. berikut adalah S-box urut dari S1-S8 :</p>
<p>S1</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="324" align="center">
<tbody>
<tr>
<td width="37" valign="top">14</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">7</td>
</tr>
<tr>
<td width="37" valign="top">0</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">8</td>
</tr>
<tr>
<td width="37" valign="top">4</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">0</td>
</tr>
<tr>
<td width="37" valign="top">15</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">13</td>
</tr>
</tbody>
</table>
<p>S2</p>
<table style="height:82px;" border="1" cellspacing="0" cellpadding="0" width="328" align="center">
<tbody>
<tr>
<td width="37" valign="top">15</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">10</td>
</tr>
<tr>
<td width="37" valign="top">3</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">5</td>
</tr>
<tr>
<td width="37" valign="top">0</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">15</td>
</tr>
<tr>
<td width="37" valign="top">13</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">9</td>
</tr>
</tbody>
</table>
<p>S3</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="343" align="center">
<tbody>
<tr>
<td width="37" valign="top">10</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
</tr>
<tr>
<td width="37" valign="top">13</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">1</td>
</tr>
<tr>
<td width="37" valign="top">13</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">7</td>
</tr>
<tr>
<td width="37" valign="top">1</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">12</td>
</tr>
</tbody>
</table>
<p>S4</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="353" align="center">
<tbody>
<tr>
<td width="37" valign="top">7</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">15</td>
</tr>
<tr>
<td width="37" valign="top">13</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">9</td>
</tr>
<tr>
<td width="37" valign="top">10</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">4</td>
</tr>
<tr>
<td width="37" valign="top">3</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">14</td>
</tr>
</tbody>
</table>
<p>S5</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="350" align="center">
<tbody>
<tr>
<td width="37" valign="top">2</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">9</td>
</tr>
<tr>
<td width="37" valign="top">14</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">6</td>
</tr>
<tr>
<td width="37" valign="top">4</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">14</td>
</tr>
<tr>
<td width="37" valign="top">11</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">3</td>
</tr>
</tbody>
</table>
<p>S6</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="353" align="center">
<tbody>
<tr>
<td width="37" valign="top">12</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">11</td>
</tr>
<tr>
<td width="37" valign="top">10</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">8</td>
</tr>
<tr>
<td width="37" valign="top">9</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">6</td>
</tr>
<tr>
<td width="37" valign="top">4</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">13</td>
</tr>
</tbody>
</table>
<p>S7</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="354" align="center">
<tbody>
<tr>
<td width="37" valign="top">4</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">1</td>
</tr>
<tr>
<td width="37" valign="top">13</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">6</td>
</tr>
<tr>
<td width="37" valign="top">1</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">2</td>
</tr>
<tr>
<td width="37" valign="top">6</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">12</td>
</tr>
</tbody>
</table>
<p>S8</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="341" align="center">
<tbody>
<tr>
<td width="37" valign="top">13</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">7</td>
</tr>
<tr>
<td width="37" valign="top">1</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">2</td>
</tr>
<tr>
<td width="37" valign="top">7</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">8</td>
</tr>
<tr>
<td width="37" valign="top">2</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">0</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">11</td>
</tr>
</tbody>
</table>
<p>bisa diliat bahwa masing-masing S-box memiliki 4 baris (baris ke 0 sampai baris ke 3) dan 16 kolom (kolom ke 0 sampai kolom ke 15). vektor A yang sudah dibagi menjadi 8 masing-masing 6 bit akan disubsitusikan dengan S-box dengan cara berikut :</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/a1.jpg"><img class="size-full wp-image-168 aligncenter" title="A" src="http://bayuramadhan.files.wordpress.com/2010/07/a1.jpg?w=157&#038;h=195" alt="" width="157" height="195" /></a></p>
<p style="text-align:left;">misal A1 adalah 010011 maka dapat dilihat seperti gambar diatas dikonversi menjadi baris 01 (dalam desimal 1) dan kolom 1001 (dalam desimal 9). maka cari pada S1 baris 1 dan kolom 9 maka hasilnya adalah 6 (dirubah menjadi 4 bit = 0110). begitu seterusnya untuk A2 dan S2, dst. setelah semua bagian disubtitusi dan dirubah menjadi bit-bit maka digabungkan akan menjadi 32 bit yang disebut vektor B. nah nanti vektor B ini akan dipermutasikan oleh matriks P :</p>
<table style="height:34px;" border="1" cellspacing="0" cellpadding="0" width="288" align="center">
<tbody>
<tr>
<td width="37" valign="top">16</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">20</td>
<td width="37" valign="top">21</td>
<td width="37" valign="top">29</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">28</td>
<td width="37" valign="top">17</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">23</td>
<td width="37" valign="top">26</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">31</td>
<td width="37" valign="top">10</td>
</tr>
<tr>
<td width="37" valign="top">2</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">24</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">32</td>
<td width="37" valign="top">27</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">19</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">30</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">22</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">25</td>
</tr>
</tbody>
</table>
<p>hasil dari permutasi inilah keluaran dari fungsi F yang nantinya akan di-xor-kan dengan L0 untuk menghasilkan R1.</p>
<p>untuk mengahsilkan L2 dan R2  maka ulangi proses tadi dengan data yang sudah di peroleh yaitu L1,R1, dan K2. proses ini diulang sampai didapatkan L16 dan R16. nah setelah mendapatkan L16 dan R16, dua bagian ini akan digabungkan, namun posisinya dipertukarkan. pemisalan enchipering akhir sebagai berikut :</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/enchipering.jpg"><img class="size-full wp-image-170 aligncenter" title="enchipering" src="http://bayuramadhan.files.wordpress.com/2010/07/enchipering.jpg?w=632&#038;h=149" alt="" width="632" height="149" /></a></p>
<p style="text-align:left;">selesai sudah proses enchipering, inti dari proses DES. proses enchipering tidak diberikan contoh karena sangat panjang, nih pseudo codenya aja.. hohoho</p>
<p style="text-align:left;">fungsi enkirpsides menerima variable Lo, R0,dan kunci yang nantinya fungsi ini akan diputar 16 kali.</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/endes.jpg"><img class="size-full wp-image-171 aligncenter" title="enkripsi des" src="http://bayuramadhan.files.wordpress.com/2010/07/endes.jpg?w=499&#038;h=426" alt="" width="499" height="426" /></a></p>
<p style="text-align:left;">fungsi funsif yang dipanggil oleh fungsi enkirpsides yang menerima inputan R dan kunci internal</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/fungsif.jpg"><img class="size-full wp-image-172 aligncenter" title="fungsif" src="http://bayuramadhan.files.wordpress.com/2010/07/fungsif.jpg?w=373&#038;h=232" alt="" width="373" height="232" /></a></p>
<p style="text-align:left;">fungsi-fungsi yang dipanggil oleh fungsi fungsif</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/ekspan-dan-xor.jpg"><img class="size-full wp-image-174 aligncenter" title="ekspan dan xor" src="http://bayuramadhan.files.wordpress.com/2010/07/ekspan-dan-xor.jpg?w=426&#038;h=397" alt="" width="426" height="397" /></a></p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/kotak.jpg"><img class="size-full wp-image-175 aligncenter" title="kotak" src="http://bayuramadhan.files.wordpress.com/2010/07/kotak.jpg?w=733&#038;h=526" alt="" width="733" height="526" /></a></p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/fungsip.jpg"><img class="size-full wp-image-176 aligncenter" title="fungsip" src="http://bayuramadhan.files.wordpress.com/2010/07/fungsip.jpg?w=331&#038;h=138" alt="" width="331" height="138" /></a></p>
<p style="text-align:left;">selesai sudah tahap dari enchipering DES. sekarang keluaran dari tahap enchipering ini akan di invers. caranya yaitu dilakukan permutasi oleh matriks IP<sup>-1</sup></p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="360" align="center">
<tbody>
<tr>
<td width="37" valign="top">40</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">48</td>
<td width="37" valign="top">16</td>
<td width="37" valign="top">56</td>
<td width="37" valign="top">24</td>
<td width="37" valign="top">64</td>
<td width="37" valign="top">32</td>
<td width="37" valign="top">39</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">47</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">55</td>
<td width="37" valign="top">23</td>
<td width="37" valign="top">63</td>
<td width="37" valign="top">31</td>
</tr>
<tr>
<td width="37" valign="top">38</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">46</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">54</td>
<td width="37" valign="top">22</td>
<td width="37" valign="top">62</td>
<td width="37" valign="top">30</td>
<td width="37" valign="top">37</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">45</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">53</td>
<td width="37" valign="top">21</td>
<td width="37" valign="top">61</td>
<td width="37" valign="top">29</td>
</tr>
<tr>
<td width="37" valign="top">36</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">44</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">52</td>
<td width="37" valign="top">20</td>
<td width="37" valign="top">60</td>
<td width="37" valign="top">28</td>
<td width="37" valign="top">35</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">43</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">51</td>
<td width="37" valign="top">19</td>
<td width="37" valign="top">59</td>
<td width="37" valign="top">27</td>
</tr>
<tr>
<td width="37" valign="top">34</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">42</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">50</td>
<td width="37" valign="top">18</td>
<td width="37" valign="top">58</td>
<td width="37" valign="top">26</td>
<td width="37" valign="top">33</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">41</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">49</td>
<td width="37" valign="top">17</td>
<td width="37" valign="top">57</td>
<td width="37" valign="top">25</td>
</tr>
</tbody>
</table>
<p>selesai sudah enkripsi DES. kalo mau program lengkapnya ada <a title="download program" href="http://www.mediafire.com/download.php?h1l83tdxtc12vq9" target="_blank">disini</a>.</p>
<p><strong>DEKRIPSI</strong></p>
<p>Proses dekripsi terhadap cipherteks merupakan kebalikan dari proses enkripsi. DES menggunakan algoritma yang sama untuk proses enkripsi dan dekripsi. Jika pada proses enkripsi urutan kunci internal yang digunakan adalah <em>K</em><sub>1</sub>, <em>K</em><sub>2</sub>, …, <em>K</em><sub>16</sub>, maka pada proses dekripsi urutan kunci yang digunakan adalah <em>K</em><sub>16</sub>, <em>K</em><sub>15</sub>, …, <em>K</em><sub>1</sub>.</p>
<p>kalo sudah download program lengkapnya pasti ngerti deh proses enkripsi dan dekripsi DES-nya. selamat belajar <img src='http://s0.wp.com/wp-includes/images/smilies/icon_biggrin.gif' alt=':D' class='wp-smiley' /> </p>
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		<title>Data Encryption Standard (DES)</title>
		<link>http://bayuramadhan.wordpress.com/2010/07/21/des/</link>
		<comments>http://bayuramadhan.wordpress.com/2010/07/21/des/#comments</comments>
		<pubDate>Wed, 21 Jul 2010 15:02:54 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[IT]]></category>
		<category><![CDATA[C#]]></category>
		<category><![CDATA[dekripsi]]></category>
		<category><![CDATA[DES]]></category>
		<category><![CDATA[enkripsi]]></category>
		<category><![CDATA[kriptografi]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=108</guid>
		<description><![CDATA[ini dulu adalah tugas yang diberikan dosen kepada saya yaitu membuat aplikasi DES pakai bahasa apa aja. nah kemaren iseng-iseng pake C#. sebenernya sih penasaran pake bahasa C# soalnya belum pernah bikin program pake C# *malu*. yasudah biar ga lupa saya tulis aja diblog. sejarah Algoritma DES dikembangkan di IBM dibawah kepemimpinan W.L. Tuchman pada [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=108&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>ini dulu adalah tugas yang diberikan dosen kepada saya yaitu membuat aplikasi DES pakai bahasa apa aja. nah kemaren iseng-iseng pake C#. sebenernya sih penasaran pake bahasa C# soalnya belum pernah bikin program pake C# *malu*. yasudah biar ga lupa saya tulis aja diblog.</p>
<h2><strong>sejarah</strong></h2>
<ul>
<li>Algoritma DES dikembangkan di IBM dibawah kepemimpinan W.L. Tuchman pada tahun 1972.  Algoritma ini didasarkan pada algoritma LUCIFER yang dibuat oleh Horst Feistel.</li>
<li>Algoritma ini telah disetujui oleh <em>National Bureau of Standard</em> (NBS) setelah penilaian kekuatannya oleh <em>National Security Agency</em> (NSA) Amerika Serikat.</li>
</ul>
<h2><strong>algoritma</strong></h2>
<p>DES termasuk ke dalam sistem kriptografi simetri dan tergolong jenis <em>cipher</em> blok. DES beroperasi pada ukuran blok 64 bit. DES mengenkripsikan 64 bit plainteks menjadi 64 bit cipherteks dengan menggunakan 56 bit kunci internal (<em>internal key</em>) atau upa-kunci (<em>subkey</em>). Kunci internal dibangkitkan dari kunci eksternal (<em>external key</em>) yang panjangnya 64 bit. secara global algorima digambarkan sebagai berikut :</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/global.jpg"><img class="size-full wp-image-111 aligncenter" title="algoritma global DES" src="http://bayuramadhan.files.wordpress.com/2010/07/global.jpg?w=330&#038;h=296" alt="" width="330" height="296" /></a></p>
<p>menurut gambar diatas bisa diceritaken seperti ini :</p>
<ol>
<li>Blok plainteks dipermutasi dengan matriks permutasi awal (<em>initial permutation</em> atau IP).</li>
<li>Hasil permutasi awal kemudian di-<em>enciphering</em>- sebanyak 16 kali (16 putaran). Setiap putaran menggunakan kunci internal yang berbeda.</li>
<li>Hasil enciphering kemudian dipermutasi dengan matriks permutasi balikan (<em>invers initial permutation</em> atau IP<sup>-1</sup> ) menjadi blok cipherteks.</li>
</ol>
<p><span id="more-108"></span></p>
<p>perlu penjelasan plantext itu adalah text mentah. misalnya nulis di notepad itu adalah plaintextnya. pokonya bisa dibaca oleh manusialah itu namanya plaintext. nah nantinya plaintext itu dijadiin bit-bit gitu. misal huruf a itu binarynya 01100001. jadi kalo misal ada plaintext: bayu, maka binarynya 01100010011000010111100101110101. huruf besar dan huruf kecil berbeda binarynya. setelah itu binary yang tersusun dari plaintext dipecah-pecah  tiap 64 bit. nanti tiap 64 bit itu akan dipermutasikan sama matriks permutasi (IP). berikut matriks IP</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="444" align="center">
<tbody>
<tr style="text-align:center;">
<td width="37" valign="top">58</td>
<td width="37" valign="top">50</td>
<td width="37" valign="top">42</td>
<td width="37" valign="top">34</td>
<td width="37" valign="top">26</td>
<td width="37" valign="top">18</td>
<td width="37" valign="top">10</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">60</td>
<td width="37" valign="top">52</td>
<td width="37" valign="top">44</td>
<td width="37" valign="top">36</td>
<td width="37" valign="top">28</td>
<td width="37" valign="top">20</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">4</td>
</tr>
<tr style="text-align:center;">
<td width="37" valign="top">62</td>
<td width="37" valign="top">54</td>
<td width="37" valign="top">46</td>
<td width="37" valign="top">38</td>
<td width="37" valign="top">30</td>
<td width="37" valign="top">22</td>
<td width="37" valign="top">14</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">64</td>
<td width="37" valign="top">56</td>
<td width="37" valign="top">48</td>
<td width="37" valign="top">40</td>
<td width="37" valign="top">32</td>
<td width="37" valign="top">24</td>
<td width="37" valign="top">16</td>
<td width="37" valign="top">8</td>
</tr>
<tr style="text-align:center;">
<td width="37" valign="top">57</td>
<td width="37" valign="top">49</td>
<td width="37" valign="top">41</td>
<td width="37" valign="top">33</td>
<td width="37" valign="top">25</td>
<td width="37" valign="top">17</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">59</td>
<td width="37" valign="top">51</td>
<td width="37" valign="top">43</td>
<td width="37" valign="top">35</td>
<td width="37" valign="top">27</td>
<td width="37" valign="top">19</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">3</td>
</tr>
<tr style="text-align:center;">
<td width="37" valign="top">61</td>
<td width="37" valign="top">53</td>
<td width="37" valign="top">45</td>
<td width="37" valign="top">37</td>
<td width="37" valign="top">29</td>
<td width="37" valign="top">21</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">63</td>
<td width="37" valign="top">55</td>
<td width="37" valign="top">47</td>
<td width="37" valign="top">39</td>
<td width="37" valign="top">31</td>
<td width="37" valign="top">23</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">7</td>
</tr>
</tbody>
</table>
<p>cara baca matriks IP ini adalah dari kiri atas ke kanan. arti dari matriks ini adalah memindahkan/mengacak posisi 64 bit plaintext. cara kerjanya adalah dengan memindahkan bit ke 58 ke posisi 1, bit ke 50 ke posisi 2, dst. contohnya seperti ini:</p>
<p>plintext : bayucaem</p>
<p>binary : 0110001001100001011110010111010101100011011000010110010101101101</p>
<p>jika sudah diacak oleh matriks IP akan menjadi:</p>
<table style="height:82px;" border="1" cellspacing="0" cellpadding="0" width="439" align="center">
<tbody>
<tr>
<td style="text-align:center;" width="67" height="20">1</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="67">1</td>
<td style="text-align:center;" width="64">0</td>
<td style="text-align:center;" width="64">0</td>
<td style="text-align:center;" width="64">0</td>
<td style="text-align:center;" width="64">0</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="64">1</td>
<td style="text-align:center;" width="67">0</td>
<td style="text-align:center;" width="64">0</td>
</tr>
<tr style="text-align:center;">
<td height="20">1</td>
<td>1</td>
<td>0</td>
<td>0</td>
<td>1</td>
<td>0</td>
<td>0</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>0</td>
</tr>
<tr>
<td style="text-align:center;" height="20">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">1</td>
</tr>
<tr>
<td style="text-align:center;" height="20">1</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">1</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">0</td>
<td style="text-align:center;">1</td>
</tr>
</tbody>
</table>
<p>begini code-nya dalam c#:</p>
<p>pertama jadikan plaintext ke binary :</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/texttobin.jpg"><img class="size-full wp-image-123   aligncenter" title="text to bin" src="http://bayuramadhan.files.wordpress.com/2010/07/texttobin.jpg?w=477&#038;h=375" border="1" alt="" width="477" height="375" /></a></p>
<p>setelah jadi tuh binary, dibagi-bagi tiap 64 bit.</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/bagi.jpg"><img class="size-full wp-image-125 aligncenter" title="bagi binary" src="http://bayuramadhan.files.wordpress.com/2010/07/bagi.jpg?w=450&#038;h=205" border="1" alt="" width="450" height="205" /></a></p>
<p>jika sudah dibagi-bagi menjadi 64 bit maka di permutasikan dengan matriks IP</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/ip.jpg"><img class="size-full wp-image-127 aligncenter" title="ip" src="http://bayuramadhan.files.wordpress.com/2010/07/ip.jpg?w=609&#038;h=126" alt="" width="609" height="126" /></a></p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/permutasi.jpg"><img class="size-full wp-image-128 aligncenter" title="permutasi" src="http://bayuramadhan.files.wordpress.com/2010/07/permutasi.jpg?w=433&#038;h=207" alt="" width="433" height="207" /></a></p>
<p style="text-align:left;">setelah tahap permutasi selesai dilakukan maka sekarang menuju ke tahap enchipering. disni butuh yang namanya kunci eksternal yang akan membentuk kunci internal. jadi gambarannya sang user jika ingin mengenkripsi maka ada dua yang harus diinputkan yaitu plaintextnya  dan kuncinya sepanjang 16 digit hexadesimal. kunci ini juga (selanjutnya disebut kunci eksternal) akan digunakan pada saat mendekripsi DES.</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/muka.jpg"><img class="size-full wp-image-132 aligncenter" title="muka" src="http://bayuramadhan.files.wordpress.com/2010/07/muka.jpg?w=518&#038;h=275" alt="" width="518" height="275" /></a></p>
<p style="text-align:left;">diperlukan 16 kunci internal untuk digunakan dalam putaran enchipering. untuk mendapatkannya pertama, kunci external yang diinputkan oleh user dalam bentuk hexadesimal diubah kebentuk biner kemudian dipermutasikan oleh matriks PC-1. ini matriksnya :</p>
<table style="height:66px;" border="1" cellspacing="0" cellpadding="0" width="377" align="center">
<tbody>
<tr>
<td width="37" valign="top">57</td>
<td width="37" valign="top">49</td>
<td width="37" valign="top">41</td>
<td width="37" valign="top">33</td>
<td width="37" valign="top">25</td>
<td width="37" valign="top">17</td>
<td width="37" valign="top">9</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">58</td>
<td width="37" valign="top">50</td>
<td width="37" valign="top">42</td>
<td width="37" valign="top">34</td>
<td width="37" valign="top">26</td>
<td width="37" valign="top">18</td>
</tr>
<tr>
<td width="37" valign="top">10</td>
<td width="37" valign="top">2</td>
<td width="37" valign="top">59</td>
<td width="37" valign="top">51</td>
<td width="37" valign="top">43</td>
<td width="37" valign="top">35</td>
<td width="37" valign="top">27</td>
<td width="37" valign="top">19</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">60</td>
<td width="37" valign="top">52</td>
<td width="37" valign="top">44</td>
<td width="37" valign="top">36</td>
</tr>
<tr>
<td width="37" valign="top">63</td>
<td width="37" valign="top">55</td>
<td width="37" valign="top">47</td>
<td width="37" valign="top">39</td>
<td width="37" valign="top">31</td>
<td width="37" valign="top">23</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">62</td>
<td width="37" valign="top">54</td>
<td width="37" valign="top">46</td>
<td width="37" valign="top">38</td>
<td width="37" valign="top">30</td>
<td width="37" valign="top">22</td>
</tr>
<tr>
<td width="37" valign="top">14</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">61</td>
<td width="37" valign="top">53</td>
<td width="37" valign="top">45</td>
<td width="37" valign="top">37</td>
<td width="37" valign="top">29</td>
<td width="37" valign="top">21</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">28</td>
<td width="37" valign="top">20</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">4</td>
</tr>
</tbody>
</table>
<p>cara permutasinya sama dengan permutasi plaintext dan mengahsilkan 56 bit dari 64 bit kunci eksternal. setelah didapatkan hasil dari permutasi maka hasil permutasi tadi dibagi dua, yaitu bagian kiri dan kanan masing-masing 28 bit. Selanjutnya, kedua bagian digeser ke kiri (<em>left shift</em>) sepanjang satu atau dua bit bergantung pada tiap putaran. Operasi pergeseran bersifat <em>wrapping</em> atau <em>round-shift</em>. Jumlah pergeseran pada setiap putaran ditunjukkan pada Tabel 1 sbb:</p>
<table style="height:299px;" border="1" cellspacing="0" cellpadding="0" width="239" align="center">
<tbody>
<tr style="text-align:center;">
<td width="91" valign="top">Putaran, <em>i</em></td>
<td width="120" valign="top">Jumlah pergeseran bit</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">1</td>
<td width="120" valign="top">1</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">2</td>
<td width="120" valign="top">1</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">3</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">4</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">5</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">6</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">7</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">8</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">9</td>
<td width="120" valign="top">1</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">10</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">11</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">12</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">13</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">14</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">15</td>
<td width="120" valign="top">2</td>
</tr>
<tr style="text-align:center;">
<td width="91" valign="top">16</td>
<td width="120" valign="top">1</td>
</tr>
</tbody>
</table>
<p>setelah digeser, masing-masing digabungkan kembali dan kembali lagi dipermutasikan. tetapi matriks yang digunakan adalah matriks pc-2 :</p>
<table border="1" cellspacing="0" cellpadding="0" align="center">
<tbody>
<tr>
<td width="37" valign="top">14</td>
<td width="37" valign="top">17</td>
<td width="37" valign="top">11</td>
<td width="37" valign="top">24</td>
<td width="37" valign="top">1</td>
<td width="37" valign="top">5</td>
<td width="37" valign="top">3</td>
<td width="37" valign="top">28</td>
<td width="37" valign="top">15</td>
<td width="37" valign="top">6</td>
<td width="37" valign="top">21</td>
<td width="37" valign="top">10</td>
</tr>
<tr>
<td width="37" valign="top">23</td>
<td width="37" valign="top">19</td>
<td width="37" valign="top">12</td>
<td width="37" valign="top">4</td>
<td width="37" valign="top">26</td>
<td width="37" valign="top">8</td>
<td width="37" valign="top">16</td>
<td width="37" valign="top">7</td>
<td width="37" valign="top">27</td>
<td width="37" valign="top">20</td>
<td width="37" valign="top">13</td>
<td width="37" valign="top">2</td>
</tr>
<tr>
<td width="37" valign="top">41</td>
<td width="37" valign="top">52</td>
<td width="37" valign="top">31</td>
<td width="37" valign="top">37</td>
<td width="37" valign="top">47</td>
<td width="37" valign="top">55</td>
<td width="37" valign="top">30</td>
<td width="37" valign="top">40</td>
<td width="37" valign="top">51</td>
<td width="37" valign="top">45</td>
<td width="37" valign="top">33</td>
<td width="37" valign="top">48</td>
</tr>
<tr>
<td width="37" valign="top">44</td>
<td width="37" valign="top">49</td>
<td width="37" valign="top">39</td>
<td width="37" valign="top">56</td>
<td width="37" valign="top">34</td>
<td width="37" valign="top">53</td>
<td width="37" valign="top">46</td>
<td width="37" valign="top">42</td>
<td width="37" valign="top">50</td>
<td width="37" valign="top">36</td>
<td width="37" valign="top">29</td>
<td width="37" valign="top">32</td>
</tr>
</tbody>
</table>
<p>ilustrasinya begini:</p>
<p>key eksternal inputan user : ab12781bac253987</p>
<p>binernya:</p>
<table style="height:80px;" border="1" cellspacing="0" cellpadding="0" width="288" align="center">
<col width="67"></col>
<col span="15" width="64"></col>
<tbody>
<tr>
<td width="67" height="20" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
</tr>
<tr>
<td height="20" align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
</tr>
<tr>
<td height="20" align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
</tr>
<tr>
<td height="20" align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
</tr>
</tbody>
</table>
<p style="text-align:left;">setelah dipermutasikan dengan pc-1 dan dibagi menjadi dua bagian (L0 dan R0)</p>
<p style="text-align:left;">L0</p>
<table style="height:42px;" border="1" cellspacing="0" cellpadding="0" width="244" align="center">
<tbody>
<tr>
<td width="64" height="20" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
</tr>
<tr>
<td height="20" align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
</tr>
</tbody>
</table>
<p style="text-align:left;">R0</p>
<table style="height:42px;" border="1" cellspacing="0" cellpadding="0" width="248" align="center">
<tbody>
<tr>
<td width="64" height="20" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">1</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
</tr>
<tr>
<td height="20" align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
</tr>
</tbody>
</table>
<p style="text-align:left;">karena ini adalah putaran pertama maka L0 dan R0 masing-masing digeser kekiri 1 kali menurut tabel pergeseran diatas, hasilnya begini setelah L0 dan R0 digeser dan digabung kembali kemudian dipermutasikan dengan pc-2</p>
<table style="height:82px;" border="1" cellspacing="0" cellpadding="0" width="421" align="center">
<tbody>
<tr>
<td width="64" height="20" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
<td width="64" align="right">0</td>
<td width="64" align="right">1</td>
<td width="64" align="right">0</td>
</tr>
<tr>
<td height="20" align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
</tr>
<tr>
<td height="20" align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
</tr>
<tr>
<td height="20" align="right">0</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">0</td>
<td align="right">1</td>
<td align="right">0</td>
<td align="right">1</td>
</tr>
</tbody>
</table>
<p style="text-align:left;">dalam hexadecimal : 432c1248d7c5</p>
<p style="text-align:left;">itulah key internal pertama yang didapatkan. untuk mendapatkan key/kunci internal yang kedua  cukup key yang pertama dibagi masing-masing 24 bit kiri dan kanan setelah itu digeser menurut table pergesaran  dan dipermutasikan dengan pc-2. berikut key internal lengkapnya :</p>
<table style="height:290px;" border="1" cellspacing="0" cellpadding="0" width="218" align="center">
<tbody>
<tr>
<td colspan="2" width="306" valign="top">Key   eksternal : ab12781bac253987</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">no</td>
<td width="161" valign="top">key</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">1</td>
<td width="161" valign="top">432c1248d7c5</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">2</td>
<td width="161" valign="top">50422d7cb8e8</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">3</td>
<td width="161" valign="top">81912420fc7f</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">4</td>
<td width="161" valign="top">800ae72fbcb2</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">5</td>
<td width="161" valign="top">b17220ad4d73</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">6</td>
<td width="161" valign="top">8017e00fca56</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">7</td>
<td width="161" valign="top">d05255d5c5d4</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">8</td>
<td width="161" valign="top">05d3408986cd</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">9</td>
<td width="161" valign="top">e621187136f8</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">10</td>
<td width="161" valign="top">0e861139b82f</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">11</td>
<td width="161" valign="top">4f181a267cb6</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">12</td>
<td width="161" valign="top">2ea0c82d29f7</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">13</td>
<td width="161" valign="top">1a4c0aa7c8d3</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">14</td>
<td width="161" valign="top">682918478757</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">15</td>
<td width="161" valign="top">04ac0d9f85cc</td>
</tr>
<tr style="text-align:center;">
<td width="145" valign="top">16</td>
<td width="161" valign="top">9805c455366e</td>
</tr>
</tbody>
</table>
<p style="text-align:left;">implementasi pembentukan kunci dalam bahasa c# sebagai berikut :</p>
<p style="text-align:left;">pertama adalah menerima input dari user berupa hexadesimal kemudian inputan tersebut dijadikan biner:</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/key-to-biner.jpg"><img class="size-full wp-image-142 aligncenter" title="key to biner" src="http://bayuramadhan.files.wordpress.com/2010/07/key-to-biner.jpg?w=371&#038;h=578" alt="" width="371" height="578" /></a></p>
<p style="text-align:left;">bilangan biner yang di dapat akan dilakukan permutasi dengan pc-1. fungsi yang digunakan adalah fungsi permutasi yang dilakukan pada plaintext hanya berbeda array matriksnya saja. setelah itu dibagi dua masing-masing menjadi L0 dan R0:</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/l0r0.jpg"><img class="size-full wp-image-143 aligncenter" title="L0R0" src="http://bayuramadhan.files.wordpress.com/2010/07/l0r0.jpg?w=332&#038;h=332" alt="" width="332" height="332" /></a></p>
<p style="text-align:left;">setelah itu adalah pergesaran pada kedua bagian tersebut</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/geser.jpg"><img class="size-full wp-image-144 aligncenter" title="geser" src="http://bayuramadhan.files.wordpress.com/2010/07/geser.jpg?w=403&#038;h=358" alt="" width="403" height="358" /></a></p>
<p style="text-align:left;">setelah digeser proses terakhir adalah menggabungkan L0 dan R0 lalu dilakukan permutasi pada matriks pc-2. nah untuk fungsi permutasi yang digunakan adalah fungsi pada permutasi pada plaintext, hanya saja array yang digunakan adalah array matriks pc-2.</p>
<p style="text-align:left;">capek juga nulis segini. besok dilanjut lagi ya proses selanjutnya sampai akhir. sekalian nanti program utuhnya di upload yang mau sedot monggo. kalo ada yang salah monggo dibenahi dan tinggalkan komen anda.  <img src='http://s0.wp.com/wp-includes/images/smilies/icon_biggrin.gif' alt=':D' class='wp-smiley' /> </p>
<p style="text-align:left;">lanjutannya <a href="http://bayuramadhan.wordpress.com/2010/07/23/des2/" target="_blank">dimari</a>.</p>
<br /> Tagged: <a href='http://bayuramadhan.wordpress.com/tag/c/'>C#</a>, <a href='http://bayuramadhan.wordpress.com/tag/dekripsi/'>dekripsi</a>, <a href='http://bayuramadhan.wordpress.com/tag/des/'>DES</a>, <a href='http://bayuramadhan.wordpress.com/tag/enkripsi/'>enkripsi</a>, <a href='http://bayuramadhan.wordpress.com/tag/kriptografi/'>kriptografi</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/bayuramadhan.wordpress.com/108/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/bayuramadhan.wordpress.com/108/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/bayuramadhan.wordpress.com/108/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/bayuramadhan.wordpress.com/108/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/bayuramadhan.wordpress.com/108/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/bayuramadhan.wordpress.com/108/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/bayuramadhan.wordpress.com/108/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/bayuramadhan.wordpress.com/108/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/bayuramadhan.wordpress.com/108/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/bayuramadhan.wordpress.com/108/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/bayuramadhan.wordpress.com/108/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/bayuramadhan.wordpress.com/108/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/bayuramadhan.wordpress.com/108/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/bayuramadhan.wordpress.com/108/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=108&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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			<media:title type="html">bayuramadhan</media:title>
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			<media:title type="html">algoritma global DES</media:title>
		</media:content>

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			<media:title type="html">text to bin</media:title>
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			<media:title type="html">bagi binary</media:title>
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			<media:title type="html">ip</media:title>
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			<media:title type="html">permutasi</media:title>
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			<media:title type="html">muka</media:title>
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			<media:title type="html">key to biner</media:title>
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			<media:title type="html">L0R0</media:title>
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	</item>
		<item>
		<title>PHP (bagian 2)</title>
		<link>http://bayuramadhan.wordpress.com/2010/07/18/php2/</link>
		<comments>http://bayuramadhan.wordpress.com/2010/07/18/php2/#comments</comments>
		<pubDate>Sun, 18 Jul 2010 06:17:32 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[pemograman]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[web]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=72</guid>
		<description><![CDATA[setelah membahas tentang sejarah PHP, statemen, komentar, dan variable, sekarang lanjut dengan bahasan operator dan struktur kendali. yang belum membaca bagian 1 ada disini. operator Operator digunakan untuk memanipulasi nilai suatu variabel. Variabel yang nilainya dimodifikasi oleh operator disebut operand.&#160; Contoh penggunaan operator misalnya 13 &#8211; 3. Dalam hal ini 13 dan 3 adalah operand, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=72&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>setelah membahas tentang sejarah PHP, statemen, komentar, dan variable, sekarang lanjut dengan bahasan operator dan struktur kendali. yang belum membaca bagian 1 ada <a title="php bagian 1" href="http://bayuramadhan.wordpress.com/2010/07/16/php1/" target="_self">disini</a>.</p>
<h2><strong>operator</strong></h2>
<p>Operator digunakan untuk memanipulasi nilai suatu variabel. Variabel yang nilainya dimodifikasi oleh operator disebut operand.&nbsp; Contoh penggunaan operator misalnya 13 &#8211; 3. Dalam hal ini 13 dan 3 adalah operand, dan tanda &#8220;-&#8221;&nbsp; disebut operator.&nbsp; Operator diklasifikasikan menjadi:</p>
<ul>
<li>Arithmetic Operator</li>
<li>Assignment Operator</li>
<li>Relational Operator</li>
<li>Logical Operator</li>
<li>Lain-lain</li>
</ul>
<p><span id="more-72"></span><br />
Arithmetic Operator digunakan untuk melakukan perhitungan matematika.</p>
<table style="height:124px;" border="1" width="193" align="center">
<tbody>
<tr style="text-align:center;">
<td>operator</td>
<td>fungsi</td>
</tr>
<tr style="text-align:center;">
<td>+</td>
<td>penambahan</td>
</tr>
<tr style="text-align:center;">
<td>-</td>
<td>pengurangan</td>
</tr>
<tr style="text-align:center;">
<td>*</td>
<td>perkalian</td>
</tr>
<tr style="text-align:center;">
<td>/</td>
<td>pembagian</td>
</tr>
<tr style="text-align:center;">
<td>%</td>
<td>modulus</td>
</tr>
</tbody>
</table>
<p>Assignment operator digunakan untuk memberi/mengisi nilai ke dalam variabel tertentu.</p>
<table style="height:138px;" border="1" width="339" align="center">
<tbody>
<tr style="text-align:center;">
<td>operator</td>
<td>fungsi</td>
</tr>
<tr style="text-align:center;">
<td>=</td>
<td>Pengisian nilai variabel</td>
</tr>
<tr style="text-align:center;">
<td>+=</td>
<td>Penambahan nilai pada variabel</td>
</tr>
<tr style="text-align:center;">
<td>-=</td>
<td>pengurangan nilai pada variabel</td>
</tr>
<tr style="text-align:center;">
<td>*=</td>
<td>pengalian nilai pada variabel</td>
</tr>
<tr style="text-align:center;">
<td>/=</td>
<td>Pembagian nilai pada variabel</td>
</tr>
<tr style="text-align:center;">
<td>%=</td>
<td>modulus nilai pada variabel</td>
</tr>
<tr style="text-align:center;">
<td>.=</td>
<td>penambahan string pada variable</td>
</tr>
<tr style="text-align:center;">
<td>++</td>
<td>inkremen</td>
</tr>
<tr style="text-align:center;">
<td>&#8211;</td>
<td>dekremen</td>
</tr>
</tbody>
</table>
<p>Relational operator digunakan untuk membandingkan nilai dari dua operand. Hasil perbandingan dinyatakan dalam nilai boolean. TRUE berarti benar dan FALSE berarti salah.</p>
<table style="height:138px;" border="1" width="339" align="center">
<tbody>
<tr style="text-align:center;">
<td>operator</td>
<td>fungsi</td>
</tr>
<tr style="text-align:center;">
<td>==</td>
<td>Sama dengan</td>
</tr>
<tr style="text-align:center;">
<td>!=</td>
<td>Tidak Sama dengan</td>
</tr>
<tr style="text-align:center;">
<td>&lt;</td>
<td>Lebih kecil dari</td>
</tr>
<tr style="text-align:center;">
<td>&gt;</td>
<td>Lebih besar dari</td>
</tr>
<tr style="text-align:center;">
<td>&lt;=</td>
<td>Lebih kecil dari sama dengan</td>
</tr>
<tr style="text-align:center;">
<td>&gt;=</td>
<td>Lebih besar dari sama dengan</td>
</tr>
</tbody>
</table>
<p>Logical Operator digunakan untuk membandingkan dua nilai variabel yang bertipe boolean. Hasil yang didapat dari penggunaan logical operator adalah boolean.</p>
<table style="height:138px;" border="1" width="339" align="center">
<tbody>
<tr style="text-align:center;">
<td>operator</td>
<td>fungsi</td>
</tr>
<tr style="text-align:center;">
<td>and</td>
<td>Logika AND</td>
</tr>
<tr style="text-align:center;">
<td>&amp;&amp;</td>
<td>Logika AND</td>
</tr>
<tr style="text-align:center;">
<td>or</td>
<td>Logika OR</td>
</tr>
<tr style="text-align:center;">
<td>||</td>
<td>Logika OR</td>
</tr>
<tr style="text-align:center;">
<td>xor</td>
<td>Logika XOR</td>
</tr>
<tr style="text-align:center;">
<td>!</td>
<td>Logika NOT</td>
</tr>
</tbody>
</table>
<p>Selain operator-operator yang telah disebutkan sebelumnya, PHP juga mengenal beberapa operator lain yang biasa digunakan dalam script PHP.</p>
<table style="height:70px;" border="1" width="304" align="center">
<tbody>
<tr style="text-align:center;">
<td>operator</td>
<td>fungsi</td>
</tr>
<tr style="text-align:center;">
<td>.</td>
<td>menggabungkan string</td>
</tr>
<tr style="text-align:center;">
<td>@</td>
<td>mematikan pesan error</td>
</tr>
</tbody>
</table>
<h2><strong>struktur kendali</strong></h2>
<p>Control flow dalam bahasa Indonesia dapat diartikan sebagai aliran/struktur kendali menjelaskan bagaimana urutan eksekusi perintah di dalam program.&nbsp; Struktur kendali merupakan pengatur aliran program, mempunyai rangkaian perintah yang harus ditulis untuk memenuhi beberapa keadaan, yaitu:</p>
<ul>
<li>Mengulang suatu perintah jika terpenuhi suatu kondisi</li>
<li>Melanjutkan sebuah pernyataan bila kondisi terpenuhi</li>
<li>Memilih sebuah pilihan dari beberapa alternatif bila kondisi terpenuhi.</li>
</ul>
<p>Pada penggunaannya, struktur kendali ini memerlukan operator. Beberapa control flow yang tersedia dalam PHP:</p>
<ul>
<li>Percabangan (branching)</li>
<li>Pengulangan (looping)</li>
<li>Perpindahan (jumping)</li>
</ul>
<p><strong>percabangan</strong></p>
<p>Percabangan, atau sering disebut juga dengan istilah decisionmaking, memungkinkan aplikasi untuk memeriksa isi suatu variabel atau hasil perhitungan ekspresi dan mengambil tindakan yang sesuai.&nbsp; Ada dua jenis percabangan, dipilih berdasarkan kriteria pemeriksaan dan jumlah pilihan yang tersedia. Perintah percabangan yang dapat digunakan dalam PHP yaitu if, if – else,&nbsp; if – elseif – else dan switch – case.&nbsp; Contoh-contoh percabangan :</p>
<p>contoh if</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/if.jpg"><img class="size-full wp-image-86 aligncenter" title="contoh if" src="http://bayuramadhan.files.wordpress.com/2010/07/if.jpg?w=373&#038;h=346" alt="" width="373" height="346" /></a></p>
<p style="text-align:left;">contoh if-else</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/ifelse.jpg"><img class="size-full wp-image-89 aligncenter" title="contoh if-else" src="http://bayuramadhan.files.wordpress.com/2010/07/ifelse.jpg?w=359&#038;h=343" alt="" width="359" height="343" /></a></p>
<p style="text-align:left;">contoh if-elseif-else</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/ifelse2.jpg"><img class="size-full wp-image-91 aligncenter" title="contoh if-elseif-else" src="http://bayuramadhan.files.wordpress.com/2010/07/ifelse2.jpg?w=350&#038;h=393" alt="" width="350" height="393" /></a></p>
<p style="text-align:left;">contoh switch-case</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/switchcase.jpg"><img class="size-full wp-image-94 aligncenter" title="switch case" src="http://bayuramadhan.files.wordpress.com/2010/07/switchcase.jpg?w=382&#038;h=446" alt="" width="382" height="446" /></a></p>
<p style="text-align:left;">Aliran program:<br />
1. Variabel x diperiksa<br />
2. Statement dieksekusi</p>
<ul>
<li> Apabila x == 1, statement 1 dijalankan</li>
<li> Apabila x == 2, statement 2 dijalankan</li>
<li>Apabila x == 3, statement 3 dijalankan</li>
<li>Apabila a tidak memenuhi , statement 4 dijalankan</li>
</ul>
<p style="text-align:left;">3.&nbsp; Keyword break memegang peranan penting karena berfungsi untuk mencegah fall-through, bandingkan apabila keyword break tersebut dihilangkan.</p>
<p style="text-align:left;"><strong>pengulangan</strong></p>
<p>Pengulangan digunakan untuk mengulang suatu perintah sebanyak yang diinginkan tanpa harus menulis ulang baris perintah tersebut. PHP mengenal tiga jenis perintah pengulangan, yaitu for, while dan do – while.</p>
<p>Looping dengan for disebut juga determinate loop, artinya looping yang jumlah pengulangannya (iterasi) telah ditentukan di awal looping. sintaks for</p>
<table border="1" align="center">
<tbody>
<tr>
<td>for (nilai_awal; nilai_akhir; penambahan/penurunan)<br />
{<br />
pernyataan yang akan diulang<br />
}</td>
</tr>
</tbody>
</table>
<p style="text-align:left;">contoh for<br />
<a href="http://bayuramadhan.files.wordpress.com/2010/07/for.jpg"><img class="size-full wp-image-96 aligncenter" title="for" src="http://bayuramadhan.files.wordpress.com/2010/07/for.jpg?w=347&#038;h=299" alt="" width="347" height="299" /></a></p>
<p>Ada beberapa bagian penting dari for loop:</p>
<ol>
<li>Initialization expression, dijalankan satu kali, pada saat looping dimulai. Biasanya bagian ini digunakan untuk menginisialisasi counter (penghitung).</li>
<li>Stop condition, diperiksa nilainya sebelum setiap iterasi dieksekusi. Apabila condition bernilai false, iterasi dihentikan.</li>
<li>Iterative expression, dilakukan setelah iterasi dieksekusi. Bagian ini biasanya digunakan untuk menambah nilai counter.</li>
<li>Loop body, dieksekusi sekali setiap iterasi, merupakan perintah yang ingin dilakukan berulang-ulang.</li>
</ol>
<p>While loop juga dikenal dengan istilah indeterminate loop, artinya jumlah loopingnya tidak ditentukan pada awal looping. While loop lebih sederhana daripada for loop, karena cuma memiliki dua bagian: Stop condition, diperiksa sebelum tiap iterasi dilaksanakan. Selama stop condition bernilai true, perintah dalam loop body akan dilakukan berulang-ulang. Iterasi akan dihentikan apabila stop condition bernilai false. Loop body, sama seperti pada for loop, loop body dilaksanakan satu kali setiap iterasi. sintaks while</p>
<table style="height:66px;" border="1" width="222" align="center">
<tbody>
<tr>
<td>while (kondisi)<br />
{<br />
pernyataan yang akan diulang<br />
}</td>
</tr>
</tbody>
</table>
<p>contoh while</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/while.jpg"><img class="size-full wp-image-97 aligncenter" title="while" src="http://bayuramadhan.files.wordpress.com/2010/07/while.jpg?w=355&#038;h=280" alt="" width="355" height="280" /></a></p>
<p>do-while adalah pengembagan dari while. bedanya do-while pasti akan menjalankan satu blok program walaupun diluar dari kondisi yang ditentukan. sintaks dari do-while</p>
<table style="height:80px;" border="1" width="231" align="center">
<tbody>
<tr>
<td>do<br />
{<br />
pernyataan yang akan diulang<br />
}<br />
while (kondisi)</td>
</tr>
</tbody>
</table>
<p>contoh do-while</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/dowhile.jpg"><img class="size-full wp-image-98 aligncenter" title="do-while" src="http://bayuramadhan.files.wordpress.com/2010/07/dowhile.jpg?w=359&#038;h=287" alt="" width="359" height="287" /></a></p>
<p><strong>perpindahan</strong></p>
<ul>
<li>Break, digunakan dalam looping untuk menghentikan suatu loop.</li>
<li>Continue, berfungsi untuk melewati satu iterasi/putaran dalam rangkaian loop.</li>
<li>Return, berfungsi untuk memerintahkan kode untuk keluar dari fungsi.</li>
<li>Exit, digunakan untuk menghentikan keseluruhan script PHP.</li>
</ul>
<p>berikut contoh program yang menggunakan operator, percabangan, perulangan, dan&nbsp; perpindahan</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/program.jpg"><img class="size-full wp-image-101 aligncenter" title="contoh program" src="http://bayuramadhan.files.wordpress.com/2010/07/program.jpg?w=409&#038;h=516" alt="" width="409" height="516" /></a></p>
<p>jika program dijalankan maka hasilnya akan seperti ini :</p>
<p style="text-align:center;"><a href="http://bayuramadhan.files.wordpress.com/2010/07/hasilprog.jpg"><img class="size-full wp-image-102 aligncenter" title="hasil program" src="http://bayuramadhan.files.wordpress.com/2010/07/hasilprog.jpg?w=182&#038;h=552" alt="" width="182" height="552" /></a></p>
<p>masih bersambung coy!! <img src='http://s0.wp.com/wp-includes/images/smilies/icon_biggrin.gif' alt=':D' class='wp-smiley' /> </p>
<br /> Tagged: <a href='http://bayuramadhan.wordpress.com/tag/pemograman/'>pemograman</a>, <a href='http://bayuramadhan.wordpress.com/tag/php/'>PHP</a>, <a href='http://bayuramadhan.wordpress.com/tag/web/'>web</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/bayuramadhan.wordpress.com/72/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/bayuramadhan.wordpress.com/72/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/bayuramadhan.wordpress.com/72/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/bayuramadhan.wordpress.com/72/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/bayuramadhan.wordpress.com/72/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/bayuramadhan.wordpress.com/72/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/bayuramadhan.wordpress.com/72/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/bayuramadhan.wordpress.com/72/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/bayuramadhan.wordpress.com/72/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/bayuramadhan.wordpress.com/72/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/bayuramadhan.wordpress.com/72/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/bayuramadhan.wordpress.com/72/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/bayuramadhan.wordpress.com/72/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/bayuramadhan.wordpress.com/72/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=72&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
			<wfw:commentRss>http://bayuramadhan.wordpress.com/2010/07/18/php2/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="http://1.gravatar.com/avatar/1b07966235ff3822ce1edcfe763e068c?s=96&#38;d=&#38;r=G" medium="image">
			<media:title type="html">bayuramadhan</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/if.jpg" medium="image">
			<media:title type="html">contoh if</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/ifelse.jpg" medium="image">
			<media:title type="html">contoh if-else</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/ifelse2.jpg" medium="image">
			<media:title type="html">contoh if-elseif-else</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/switchcase.jpg" medium="image">
			<media:title type="html">switch case</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/for.jpg" medium="image">
			<media:title type="html">for</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/while.jpg" medium="image">
			<media:title type="html">while</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/dowhile.jpg" medium="image">
			<media:title type="html">do-while</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/program.jpg" medium="image">
			<media:title type="html">contoh program</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/hasilprog.jpg" medium="image">
			<media:title type="html">hasil program</media:title>
		</media:content>
	</item>
		<item>
		<title>PHP (bagian 1)</title>
		<link>http://bayuramadhan.wordpress.com/2010/07/16/php1/</link>
		<comments>http://bayuramadhan.wordpress.com/2010/07/16/php1/#comments</comments>
		<pubDate>Fri, 16 Jul 2010 10:59:47 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[pemograman]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[web]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=41</guid>
		<description><![CDATA[PHP adalah bahasa server-side scripting. Jadi script-script pada PHP akan di-run atau dijalankan pada sisi server. Client hanya merequest suatu halaman. Kepanjangan dari PHP sendiri adalah PHP : Hypertext Processor. PHP diperkenalkan pada tahun 1994 oleh Rasmus Lerdorf yang mulanya tidak dipublikasikan dan hanya digunakan pada situs pribadinya untuk mencatat siapa saja yang mengakses daftar [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=41&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><a href="http://bayuramadhan.files.wordpress.com/2010/07/php.png"><img class="alignleft size-medium wp-image-42" title="php" src="http://bayuramadhan.files.wordpress.com/2010/07/php.png?w=165&#038;h=94" alt="" width="165" height="94" /></a>PHP adalah bahasa server-side scripting. Jadi script-script pada PHP akan di-<em>run </em>atau dijalankan pada sisi server. Client hanya merequest suatu halaman. Kepanjangan dari PHP sendiri adalah PHP : Hypertext Processor.</p>
<p>PHP diperkenalkan pada tahun 1994 oleh Rasmus Lerdorf yang mulanya tidak dipublikasikan dan hanya digunakan pada situs pribadinya untuk mencatat siapa saja yang mengakses daftar riwayat hidupnya. Script-script tersebut selanjutnya dikemas menjadi tool yang disebut Personal Home Page. Tidak seperti ASP atau ColdFusion, PHP merupakan software yang opensource dan mampu lintas platform. PHP menawarkan konektivitas yang baik dengan beberapa basis data antara lain Oracle, Sybase, mSQL, MySQL, PostgreSQL, Adabas, FilePro, Velocis, dBase, Informix, Ingres, InterBase, Unix dbm dan tak terkecuali semua database ber-interface ODBC.</p>
<p>Bagaimana memulainya? Untuk menjalankan PHP yang dibutuhkan adalah web server(apache, IIS) dan PHP itu sendiri. keduanya bisa didownload di <a title="php" href="http://www.php.net/downloads.php" target="_blank">http://www.php.net/downloads.php</a> dan <a title="apache" href="http://httpd.apache.org" target="_blank">http://httpd.apache.org</a>. Atau kalo ga mau susah ya cari aja yang namanya XAMPP. Itu udah semua kok komplit ada PHP, apache, dan MySql-nya. Jadi ga perlu repot-repot lagi deh. Setelah XAMPP diinstall, masuk ke folder xampp dan disana ada folder htdocs. Udah ketemu foldernya?? nah folder htdocs itu adalah workspacenya. Didalam folder htdocs itu buat folder sendiri untuk menyimpan file-file php.  Misal dibuat folder &#8220;saya&#8221; di dalam folder htdocs. Maka nanti cara mengaksesnya di browser adalah http://localhost/saya. Untuk lebih lanjut oprek sendiri ya file php.ini sama httpd.conf, di file itu banyak informasi penting tentang konfigurasi php dan apache-nya.</p>
<p><strong>statemen</strong></p>
<p>Script PHP selalu diawali oleh &lt;?php dan diakhiri oleh ?&gt;. Atau bisa juga dituliskan &lt;? pada awal dan ?&gt; pada akhir. Script PHP bisa ditempatkan ditempatkan dimana saja dalam file. contoh penggunaannya sebagai berikut :</p>
<table style="height:33px;" border="1" width="216" align="center">
<tbody>
<tr>
<td>&lt;?php echo &#8220;halo semuanya!!&#8221;; ?&gt;</td>
</tr>
</tbody>
</table>
<p>Jika digabungkan dengan script HTML maka akan menjadi seperti ini</p>
<table style="height:173px;" border="1" width="309" align="center">
<tbody>
<tr>
<td>&lt;html&gt;</p>
<p>&lt;body&gt;</p>
<p>&lt;?php echo &#8220;Hello World&#8221;; ?&gt;</p>
<p>&lt;? echo &#8220;ini adalah script php&#8221;; ?&gt;</p>
<p>&lt;/body&gt;</p>
<p>&lt;/html&gt;</td>
</tr>
</tbody>
</table>
<p><strong>komentar</strong></p>
<p>Untuk menuliskan komentar di PHP,  dapat digunakan //<em> komentar</em> atau /*<em> komentar</em> */. contohnya :</p>
<table style="height:249px;" border="1" width="260" align="center">
<tbody>
<tr>
<td>&lt;html&gt;</p>
<p>&lt;body&gt;</p>
<p>&lt;?</p>
<p>// ini adalah komentar</p>
<p>/* bisa juga di tuliskan</p>
<p>seperti ini jika lebih dari</p>
<p>satu baris */</p>
<p>?&gt;</p>
<p>&lt;/body&gt;</p>
<p>&lt;/html&gt;</td>
</tr>
</tbody>
</table>
<p><strong>variabel</strong></p>
<p>menuliskan variabel di PHP sangat mudah karena tidak perlu di deklarasikan sebelumnya. PHP akan otomatis mendeteksi input adalah string atau integer. selain itu variable dapat dituliskan dimana saja. variabel di PHP harus didahului oleh tanda &#8220;$&#8221; dan diikuti oleh huruf atau pun underscore &#8220;_&#8221;. contoh :</p>
<table style="height:149px;" border="1" width="257" align="center">
<tbody>
<tr>
<td>&lt;html&gt;</p>
<p>&lt;body&gt;</p>
<p>&lt;?</p>
<p>$nilai1= 9;</p>
<p>$nilai2= 1;</p>
<p>$hasil = &#8220;hasilnya adalah&#8221;;</p>
<p>$jumlah = $nilai1+$nilai2;</p>
<p>echo $hasil.&#8221; &#8220;.$jumlah;</p>
<p>?&gt;</p>
<p>&lt;/body&gt;</p>
<p>&lt;/html&gt;</td>
</tr>
</tbody>
</table>
<p>PHP mengenal dua tipe data sederhana yaitu numerik (integer,double) dan non-numerik (literal, string).  Secara umum, data literal ditandai dengan pasangan “ dan “. Data numerik tidak dikelilingi oleh “ dan “. Tetapi biasanya PHP akan secara otomatis mengubah tipe data sesuai kebutuhan.</p>
<p><em><span style="color:#ff0000;">bersambung. <a title="php bagian 2" href="http://wp.me/sged3-php2" target="_self">next</a> </span></em></p>
<br /> Tagged: <a href='http://bayuramadhan.wordpress.com/tag/pemograman/'>pemograman</a>, <a href='http://bayuramadhan.wordpress.com/tag/php/'>PHP</a>, <a href='http://bayuramadhan.wordpress.com/tag/web/'>web</a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/bayuramadhan.wordpress.com/41/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/bayuramadhan.wordpress.com/41/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/bayuramadhan.wordpress.com/41/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/bayuramadhan.wordpress.com/41/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/bayuramadhan.wordpress.com/41/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/bayuramadhan.wordpress.com/41/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/bayuramadhan.wordpress.com/41/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/bayuramadhan.wordpress.com/41/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/bayuramadhan.wordpress.com/41/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/bayuramadhan.wordpress.com/41/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/bayuramadhan.wordpress.com/41/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/bayuramadhan.wordpress.com/41/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/bayuramadhan.wordpress.com/41/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/bayuramadhan.wordpress.com/41/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=41&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>3</slash:comments>
	
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			<media:title type="html">bayuramadhan</media:title>
		</media:content>

		<media:content url="http://bayuramadhan.files.wordpress.com/2010/07/php.png?w=300" medium="image">
			<media:title type="html">php</media:title>
		</media:content>
	</item>
		<item>
		<title>internet radio</title>
		<link>http://bayuramadhan.wordpress.com/2008/11/08/internet-radio/</link>
		<comments>http://bayuramadhan.wordpress.com/2008/11/08/internet-radio/#comments</comments>
		<pubDate>Sat, 08 Nov 2008 07:29:30 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[IT]]></category>
		<category><![CDATA[ip radio]]></category>
		<category><![CDATA[radio]]></category>
		<category><![CDATA[radio internet]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=23</guid>
		<description><![CDATA[hehehe,, gara2 kurang kerjaan nih,, makanya iseng bikin internet/ip radio sendiri&#8230; jadi bisa siaran deh walaupun hanya di jaringan kosan,,, wkwkwkwkwk&#8230; membangun intrernet radio sendiri sangat mudah,,, hanya perlu software open source yang bisa di download di internet&#8230; player musicnya pun sudah sangat kita kenal sebelumnya,,, yaitu winamp plus ditambah 2 tool lagi shoutcast server [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=23&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>hehehe,, gara2 kurang kerjaan nih,, makanya iseng bikin internet/ip radio sendiri&#8230; jadi bisa siaran deh walaupun hanya di jaringan kosan,,, wkwkwkwkwk&#8230;</p>
<p>membangun intrernet radio sendiri sangat mudah,,, hanya perlu software open source yang bisa di download di internet&#8230; player musicnya pun sudah sangat kita kenal sebelumnya,,, yaitu <a href="http://download.nullsoft.com/winamp/client/winamp5541_full_emusic-7plus_all.exe" target="_blank">winamp</a> plus ditambah 2 tool lagi</p>
<ol>
<li>shoutcast server (<a href="http://yp.shoutcast.com/downloads/sc1-9-8/shoutcast-dnas-1-9-8-windows.exe" target="_blank">windows</a>,<a href="http://yp.shoutcast.com/downloads/sc1-9-8/sc_serv_1.9.8_FreeBSD5.tar.gz" target="_blank">freeBSD</a>,<a href="http://yp.shoutcast.com/downloads/sc1-9-8/sc_serv_1.9.8_Linux.tar.gz" target="_blank">linux</a>,<a href="http://yp.shoutcast.com/downloads/sc1-9-8/sc_serv_1.9.8_MacOSX.tar.gz">mac</a>,<a href="http://yp.shoutcast.com/downloads/sc1-9-8/sc_serv_1.9.8_Solaris5.9.tar.gz" target="_blank">sparc</a>)</li>
<li>shoutcast DSP plugin (<a href="http://yp.shoutcast.com/downloads/shoutcast-dsp-1-9-0-windows.exe" target="_blank">windows</a>,<a href="http://yp.shoutcast.com/downloads/sc_trans_posix_040.tgz">*nix</a>)</li>
</ol>
<p>sudah sudah sudah di download?? yang versi windows tentunya,,, hehehe&#8230; iya yang windows,, yang linux ntar menyusul lah ya&#8230; kalo uda di download,install winamp dulu ya&#8230; eh uda punya winamp ya,, yauda yauda soalnya saya ga pake winamp,, hehehe&#8230; jadi musti install winamp dulu deh,,, hohohoho&#8230; sekarang bikin servernya,,, langkah-langkah singkatnya:</p>
<ul>
<li>install shoutcast server</li>
<li>install plugin winampnya</li>
<li>run winamp</li>
<li>klik kanan di winamp-&gt;options-&gt;preference</li>
<li>pilih plugin-&gt;nullsoft shoutcast source DSP</li>
</ul>
<p>nah sekarang muncul window shoutcast kan,,, pilih yang output,, setelah itu klik conect,,, oh ya jangan lupa addressnya itu localhost dan password defaultnya adalah &#8220;Changeme&#8221; (tanpa tanda kutip tentunya),, oh ya ini rahasia ya,, passwornya itu bisa diganti,, cari aja di direktori shoutcastnya file “sc_serv.ini” atau “sc_serv.conf”,,, udah sampe situ,,, kita uda bisa siaran di radio kita sendiri&#8230; horay horay,,, bisa siaran di radio buatan sendiri,, apa lagi kalo punya ip public sendiri,,, whehehe&#8230; bisa di dengerin sampe benua antartika sono noh suara kita,,, gimana caranya nih muter lagunya?? wah gampang,, tinggal masukin aja ke playlist winamp trus play,, udah gampang kan,,, kalo mw ngomong tinggal pilih input trus klik &#8220;push to talk&#8221;&#8230;</p>
<p>gampang bgt kan bikin radio sendiri,,, hehehe&#8230; udah ah,, ak mw siaran dulu,,, para pendengar setiaku uda pada nungguin,, hihihii.. daaaaaaaahhhhhhhh&#8230;</p>
<br /> Tagged: ip radio, radio, radio internet <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/bayuramadhan.wordpress.com/23/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/bayuramadhan.wordpress.com/23/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/bayuramadhan.wordpress.com/23/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/bayuramadhan.wordpress.com/23/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/bayuramadhan.wordpress.com/23/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/bayuramadhan.wordpress.com/23/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/bayuramadhan.wordpress.com/23/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/bayuramadhan.wordpress.com/23/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/bayuramadhan.wordpress.com/23/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/bayuramadhan.wordpress.com/23/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/bayuramadhan.wordpress.com/23/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/bayuramadhan.wordpress.com/23/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/bayuramadhan.wordpress.com/23/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/bayuramadhan.wordpress.com/23/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=23&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>2</slash:comments>
	
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			<media:title type="html">bayuramadhan</media:title>
		</media:content>
	</item>
		<item>
		<title>free template for web</title>
		<link>http://bayuramadhan.wordpress.com/2008/07/03/free-template-for-web/</link>
		<comments>http://bayuramadhan.wordpress.com/2008/07/03/free-template-for-web/#comments</comments>
		<pubDate>Thu, 03 Jul 2008 07:49:29 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[IT]]></category>
		<category><![CDATA[interface]]></category>
		<category><![CDATA[situs]]></category>
		<category><![CDATA[template]]></category>
		<category><![CDATA[web]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=11</guid>
		<description><![CDATA[situs2 yang menyediakan template web gratis&#8230;. http://www.freewebsitetemplates.com http://www.freecsstemplates.org/ http://templatenavigator.com/ http://www.deviantart.com<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=11&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>situs2 yang menyediakan template web gratis&#8230;.</p>
<p>http://www.freewebsitetemplates.com</p>
<p>http://www.freecsstemplates.org/</p>
<p>http://templatenavigator.com/</p>
<p>http://www.deviantart.com</p>
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		<title>Membangun SMS Gateway (windows)</title>
		<link>http://bayuramadhan.wordpress.com/2008/07/02/membangun-sms-gateway/</link>
		<comments>http://bayuramadhan.wordpress.com/2008/07/02/membangun-sms-gateway/#comments</comments>
		<pubDate>Wed, 02 Jul 2008 09:52:23 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[IT]]></category>
		<category><![CDATA[gammu]]></category>
		<category><![CDATA[sms gateway]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=6</guid>
		<description><![CDATA[sebenernya membangun SMS gateway itu susah susah gampang,,, hehehehe,,, oh iya apa itu sms gateway??? kalo menurut pandangan penulis, sms gateway itu gerbang buat sms lalu lalang di komputer kita,,, hehehehe&#8230; jadi gerbang yang menghubungkan CPU atau komputer ke mobile device atau HaPe&#8230; bahan-bahan yang diperlukan untuk membuat sms gateway: mobile device (hape) atau modem [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=6&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>sebenernya membangun SMS gateway itu susah susah gampang,,, hehehehe,,, oh iya  apa itu sms gateway??? kalo menurut pandangan penulis, sms gateway itu gerbang buat sms lalu lalang di komputer kita,,, hehehehe&#8230; jadi gerbang yang menghubungkan CPU atau komputer ke mobile device atau HaPe&#8230;</p>
<p>bahan-bahan yang diperlukan untuk membuat sms gateway:</p>
<ul>
<li>mobile device (hape) atau modem GSM 1 unit</li>
<li>CPU 1 unit</li>
<li>sms engine (<a href="http://www.ziddu.com/download/3445353/gammu_win32.zip.html" target="_blank">gammu</a>)</li>
<li><a href="http://www.apachefriends.org/download.php?xampp-win32-1.7.1-installer.exe" target="_blank">xampp</a></li>
<li>rokok 2 batang (untuk 18+)</li>
<li>korek jangan lupa</li>
</ul>
<p>langkah-langkah:</p>
<ol>
<li>nyalain CPU dan  bakar rokok (hati-hati kebalik)</li>
<li>install driver mobile device</li>
<li>udah selesai install driver? hubungkan mobile device dengan CPU. jika mobile devicenya udah ke<em>detect</em> di CPU, cek port mobile device di CPU&#8230;  caranya klik kanan my computer-&gt;manage-&gt;device manager-&gt;klik 2x di modem mobile device.. ketemukan?? (contoh kasus: port COM8).</li>
<li>install xampp.. tinggal next,, next,, next,,, tunggu sebentar selesai xampp di install&#8230; klik di xampp control panel.. start mysql&#8230; cek apakah mysql udah jalan atau belum dengan cara: ketikan di url browser(tanpa tanda petik) &#8220;localhost/phpmyadmin&#8221;</li>
<li>kalo muncul tampilan phpmyadmin berati mysql sudah terinstall,, setelah itu buat database dengan nama (tanpa tanda petik) &#8220;smsd&#8221;</li>
<li>ekstrak gammu.zip yang sudah didownload ke satu folder di partisi mana aja&#8230; masuk ke folder gammu.. ada dua file penting didalam folder gammu yaitu: gammurc dan smsdrc</li>
<li>bakar rokok yang kedua</li>
<li>buka file gammurc dengan wordpad,, temukan bagian file dibawah ini.. hapus tanda # pada port dan connecton.. isikan port dengan port modem.. dan conection sesuai dengan modem mobile device anda.. penulis menggunakan sony erricson maka conectionnya at115200.. dimana anda dapat mengetahui conection mobile device anda?? kunjungi situs ini:<a href="http://cihar.com/gammu/phonedb/" target="_blank"> http://cihar.com/gammu/phonedb/</a></li>
<table style="height:44px;" border="1" width="389">
<tbody>
<tr>
<td>[gammu]port = com8:<br />
#model = 6110<br />
connection = at115200<br />
#synchronizetime = yes<br />
#logfile = gammulog<br />
#logformat = textall<br />
#use_locking = yes<br />
#gammuloc = locfile<br />
#startinfo = yes<br />
#gammucoding = utf8<br />
#rsslevel = teststable<br />
#usephonedb = yes</td>
</tr>
</tbody>
</table>
<li>buka file smsdrc,, temukan potongan file dibawah ini&#8230; isikan user, password dengan user dan password dari phpmyadmin,, pc dengan localhost,,, database dengan smsd</li>
<table style="height:24px;" border="1" width="389">
<tbody>
<tr>
<td># &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;- SETTINGS FOR &#8211;smsd MYSQL &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<br />
user = root<br />
password =<br />
pc = localhost<br />
database = smsd</td>
</tr>
</tbody>
</table>
<li>kembali ke phpmyadmin,, buka database smsd yang sudah dibuat tadi.. setelah itu inport file mysql.sql yang ada di folder gammu ke database.. jika sudah maka ter<em>inport</em> maka secara otomatis akan terbentuk table-table yang salah duanya yaitu table inbox dan table outbox&#8230;</li>
<li>ok dah langkah kesepuluh ya,, gammu dari cmd,, caranya: arahkan cmd ke folder gammu.. ketik seperti ini(tanpa tanda petik) &#8220;<strong>gammu −−identify</strong>&#8221; jika keuar nomer imei dari mobile device anda maka tandanya gammu sudah mendeteksi mobile device anda.. jika ada pesan error maka periksa lagi file gammurc anda..</li>
<li>setelah terdeteksi maka jalankan perintah &#8220;<strong>gammu  −−smsd MYSQL smsdrc</strong>&#8220;&#8230; jika tidak ada pesan error maka ini akan menjalankan gammu secara terus menerus dan mengecek apakah ada sms masuk atau sms keluar&#8230;</li>
<li>jika ada sms yang masuk maka sms tersebut akan langsung di foward ke table inbox,, nah jika ingin mengirim sms maka insertkan data ke table outbox melalui phpmyadmin&#8230; field yang perlu diisi di table outbox adalah destinationnumbers diisi nomer tujuan,, coding pilih default_no_compression, dan textdecode diisi dengan isi dari sms yang mw dikirimkan,, yang lainnya birkan aja&#8230; jika sms terkirim maka data tersebut akan terhapus dari table outbox dan masuk ke table sentitems</li>
</ol>
<p>dah jalan tuh sms gatewaynya,, hehehe,, untuk teknik-teknik lainnya seperti diintegrasikan di php atau java, sms broadcast,, sms polling,, atau seperti reg&lt;spasi&gt;nama, remote komputer dari sms nanti ada postingan berikutnya,, hohoho&#8230;</p>
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		<title>thanks to</title>
		<link>http://bayuramadhan.wordpress.com/2008/06/03/thanks-to/</link>
		<comments>http://bayuramadhan.wordpress.com/2008/06/03/thanks-to/#comments</comments>
		<pubDate>Tue, 03 Jun 2008 03:50:13 +0000</pubDate>
		<dc:creator>bayuramadhan</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://bayuramadhan.wordpress.com/?p=4</guid>
		<description><![CDATA[thanks to allah swt.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=bayuramadhan.wordpress.com&amp;blog=3867873&amp;post=4&amp;subd=bayuramadhan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>thanks to allah swt.</p>
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