diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/generators/DHKeyPairGenerator.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/generators/DHKeyPairGenerator.java | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/generators/DHKeyPairGenerator.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/generators/DHKeyPairGenerator.java deleted file mode 100644 index f87b416fa..000000000 --- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/generators/DHKeyPairGenerator.java +++ /dev/null @@ -1,42 +0,0 @@ -package org.spongycastle.crypto.generators; - -import org.spongycastle.crypto.AsymmetricCipherKeyPair; -import org.spongycastle.crypto.AsymmetricCipherKeyPairGenerator; -import org.spongycastle.crypto.KeyGenerationParameters; -import org.spongycastle.crypto.params.DHKeyGenerationParameters; -import org.spongycastle.crypto.params.DHParameters; -import org.spongycastle.crypto.params.DHPrivateKeyParameters; -import org.spongycastle.crypto.params.DHPublicKeyParameters; - -import java.math.BigInteger; - -/** - * a Diffie-Hellman key pair generator. - * - * This generates keys consistent for use in the MTI/A0 key agreement protocol - * as described in "Handbook of Applied Cryptography", Pages 516-519. - */ -public class DHKeyPairGenerator - implements AsymmetricCipherKeyPairGenerator -{ - private DHKeyGenerationParameters param; - - public void init( - KeyGenerationParameters param) - { - this.param = (DHKeyGenerationParameters)param; - } - - public AsymmetricCipherKeyPair generateKeyPair() - { - DHKeyGeneratorHelper helper = DHKeyGeneratorHelper.INSTANCE; - DHParameters dhp = param.getParameters(); - - BigInteger x = helper.calculatePrivate(dhp, param.getRandom()); - BigInteger y = helper.calculatePublic(dhp, x); - - return new AsymmetricCipherKeyPair( - new DHPublicKeyParameters(y, dhp), - new DHPrivateKeyParameters(x, dhp)); - } -} |