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		<title>Java Tutorial/Security/El Gamal - История изменений</title>
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		<updated>2026-04-21T09:00:08Z</updated>
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	<entry>
		<id>http://www.jexp.ru/index.php?title=Java_Tutorial/Security/El_Gamal&amp;diff=4290&amp;oldid=prev</id>
		<title>Admin: 1 версия</title>
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				<updated>2010-06-01T05:01:22Z</updated>
		
		<summary type="html">&lt;p&gt;1 версия&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Версия 05:01, 1 июня 2010&lt;/td&gt;
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		<author><name>Admin</name></author>	</entry>

	<entry>
		<id>http://www.jexp.ru/index.php?title=Java_Tutorial/Security/El_Gamal&amp;diff=4289&amp;oldid=prev</id>
		<title> в 17:44, 31 мая 2010</title>
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				<updated>2010-05-31T17:44:27Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Новая страница&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==  El Gamal example with random key generation. ==&lt;br /&gt;
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&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;java&amp;quot;&amp;gt;&lt;br /&gt;
import java.security.Key;&lt;br /&gt;
import java.security.KeyPair;&lt;br /&gt;
import java.security.KeyPairGenerator;&lt;br /&gt;
import java.security.SecureRandom;&lt;br /&gt;
import java.security.Security;&lt;br /&gt;
import javax.crypto.Cipher;&lt;br /&gt;
public class MainClass {&lt;br /&gt;
  public static void main(String[] args) throws Exception {&lt;br /&gt;
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());&lt;br /&gt;
    byte[] input = &amp;quot;ab&amp;quot;.getBytes();&lt;br /&gt;
    Cipher cipher = Cipher.getInstance(&amp;quot;ElGamal/None/NoPadding&amp;quot;, &amp;quot;BC&amp;quot;);&lt;br /&gt;
    KeyPairGenerator generator = KeyPairGenerator.getInstance(&amp;quot;ElGamal&amp;quot;, &amp;quot;BC&amp;quot;);&lt;br /&gt;
    SecureRandom random = new SecureRandom();&lt;br /&gt;
    generator.initialize(128, random);&lt;br /&gt;
    KeyPair pair = generator.generateKeyPair();&lt;br /&gt;
    Key pubKey = pair.getPublic();&lt;br /&gt;
    Key privKey = pair.getPrivate();&lt;br /&gt;
    cipher.init(Cipher.ENCRYPT_MODE, pubKey, random);&lt;br /&gt;
    byte[] cipherText = cipher.doFinal(input);&lt;br /&gt;
    System.out.println(&amp;quot;cipher: &amp;quot; + new String(cipherText));&lt;br /&gt;
    cipher.init(Cipher.DECRYPT_MODE, privKey);&lt;br /&gt;
    byte[] plainText = cipher.doFinal(cipherText);&lt;br /&gt;
    System.out.println(&amp;quot;plain : &amp;quot; + new String(plainText));&lt;br /&gt;
  }&lt;br /&gt;
}&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- end source code --&amp;gt;&lt;/div&gt;</summary>
			</entry>

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