diff options
Diffstat (limited to 'prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/rsa/KeyPairGeneratorSpi.java')
-rw-r--r-- | prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/rsa/KeyPairGeneratorSpi.java | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/rsa/KeyPairGeneratorSpi.java b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/rsa/KeyPairGeneratorSpi.java new file mode 100644 index 00000000..1239628e --- /dev/null +++ b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/rsa/KeyPairGeneratorSpi.java @@ -0,0 +1,78 @@ +package org.spongycastle.jcajce.provider.asymmetric.rsa; + +import java.math.BigInteger; +import java.security.InvalidAlgorithmParameterException; +import java.security.KeyPair; +import java.security.SecureRandom; +import java.security.spec.AlgorithmParameterSpec; +import java.security.spec.RSAKeyGenParameterSpec; + +import org.spongycastle.crypto.AsymmetricCipherKeyPair; +import org.spongycastle.crypto.generators.RSAKeyPairGenerator; +import org.spongycastle.crypto.params.RSAKeyGenerationParameters; +import org.spongycastle.crypto.params.RSAKeyParameters; +import org.spongycastle.crypto.params.RSAPrivateCrtKeyParameters; + +public class KeyPairGeneratorSpi + extends java.security.KeyPairGenerator +{ + public KeyPairGeneratorSpi( + String algorithmName) + { + super(algorithmName); + } + + final static BigInteger defaultPublicExponent = BigInteger.valueOf(0x10001); + final static int defaultTests = 12; + + RSAKeyGenerationParameters param; + RSAKeyPairGenerator engine; + + public KeyPairGeneratorSpi() + { + super("RSA"); + + engine = new RSAKeyPairGenerator(); + param = new RSAKeyGenerationParameters(defaultPublicExponent, + new SecureRandom(), 2048, defaultTests); + engine.init(param); + } + + public void initialize( + int strength, + SecureRandom random) + { + param = new RSAKeyGenerationParameters(defaultPublicExponent, + random, strength, defaultTests); + + engine.init(param); + } + + public void initialize( + AlgorithmParameterSpec params, + SecureRandom random) + throws InvalidAlgorithmParameterException + { + if (!(params instanceof RSAKeyGenParameterSpec)) + { + throw new InvalidAlgorithmParameterException("parameter object not a RSAKeyGenParameterSpec"); + } + RSAKeyGenParameterSpec rsaParams = (RSAKeyGenParameterSpec)params; + + param = new RSAKeyGenerationParameters( + rsaParams.getPublicExponent(), + random, rsaParams.getKeysize(), defaultTests); + + engine.init(param); + } + + public KeyPair generateKeyPair() + { + AsymmetricCipherKeyPair pair = engine.generateKeyPair(); + RSAKeyParameters pub = (RSAKeyParameters)pair.getPublic(); + RSAPrivateCrtKeyParameters priv = (RSAPrivateCrtKeyParameters)pair.getPrivate(); + + return new KeyPair(new BCRSAPublicKey(pub), + new BCRSAPrivateCrtKey(priv)); + } +} |