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Java by API/javax.crypto.spec/DHParameterSpec - История изменений
2026-04-18T20:50:38Z
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http://www.jexp.ru/index.php?title=Java_by_API/javax.crypto.spec/DHParameterSpec&diff=38&oldid=prev
в 17:43, 31 мая 2010
2010-05-31T17:43:48Z
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http://www.jexp.ru/index.php?title=Java_by_API/javax.crypto.spec/DHParameterSpec&diff=39&oldid=prev
Admin: 1 версия
2010-05-31T14:10:04Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== javax.crypto.spec.DHParameterSpec ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
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import java.math.BigInteger;<br />
import java.security.KeyPair;<br />
import java.security.KeyPairGenerator;<br />
import java.security.MessageDigest;<br />
import java.security.SecureRandom;<br />
import java.security.Security;<br />
import javax.crypto.KeyAgreement;<br />
import javax.crypto.spec.DHParameterSpec;<br />
public class Main {<br />
private static BigInteger g512 = new BigInteger("1234567890", 16);<br />
private static BigInteger p512 = new BigInteger("1234567890", 16);<br />
public static void main(String[] args) throws Exception {<br />
//Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());<br />
DHParameterSpec dhParams = new DHParameterSpec(p512, g512);<br />
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH", "BC");<br />
keyGen.initialize(dhParams, new SecureRandom());<br />
KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "BC");<br />
KeyPair aPair = keyGen.generateKeyPair();<br />
KeyAgreement bKeyAgree = KeyAgreement.getInstance("DH", "BC");<br />
KeyPair bPair = keyGen.generateKeyPair();<br />
aKeyAgree.init(aPair.getPrivate());<br />
bKeyAgree.init(bPair.getPrivate());<br />
aKeyAgree.doPhase(bPair.getPublic(), true);<br />
bKeyAgree.doPhase(aPair.getPublic(), true);<br />
MessageDigest hash = MessageDigest.getInstance("SHA1", "BC");<br />
System.out.println(new String(hash.digest(aKeyAgree.generateSecret())));<br />
System.out.println(new String(hash.digest(bKeyAgree.generateSecret())));<br />
}<br />
}<br />
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</source><br />
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<!-- end source code --></div>
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