Examples with ElGamalKeyGenerationParameters com.github.zhenwei.core.crypto.params.ElGamalKeyGenerationParameters used on opensource projects

Example 1 with ElGamalKeyGenerationParameters

use of com.github.zhenwei.core.crypto.params.ElGamalKeyGenerationParameters in project LinLong-Java by zhenwei1108.

the class KeyPairGeneratorSpi method initialize.

public void initialize(AlgorithmParameterSpec params, SecureRandom random) throws InvalidAlgorithmParameterException {
    if (!(params instanceof ElGamalParameterSpec) && !(params instanceof DHParameterSpec)) {
        throw new InvalidAlgorithmParameterException("parameter object not a DHParameterSpec or an ElGamalParameterSpec");
    }
    if (params instanceof ElGamalParameterSpec) {
        ElGamalParameterSpec elParams = (ElGamalParameterSpec) params;
        param = new ElGamalKeyGenerationParameters(random, new ElGamalParameters(elParams.getP(), elParams.getG()));
    } else {
        DHParameterSpec dhParams = (DHParameterSpec) params;
        param = new ElGamalKeyGenerationParameters(random, new ElGamalParameters(dhParams.getP(), dhParams.getG(), dhParams.getL()));
    }
    engine.init(param);
    initialised = true;
}

Example 2 with ElGamalKeyGenerationParameters

use of com.github.zhenwei.core.crypto.params.ElGamalKeyGenerationParameters in project LinLong-Java by zhenwei1108.

the class KeyPairGeneratorSpi method generateKeyPair.

public KeyPair generateKeyPair() {
    if (!initialised) {
        DHParameterSpec dhParams = WeGooProvider.CONFIGURATION.getDHDefaultParameters(strength);
        if (dhParams != null) {
            param = new ElGamalKeyGenerationParameters(random, new ElGamalParameters(dhParams.getP(), dhParams.getG(), dhParams.getL()));
        } else {
            ElGamalParametersGenerator pGen = new ElGamalParametersGenerator();
            pGen.init(strength, certainty, random);
            param = new ElGamalKeyGenerationParameters(random, pGen.generateParameters());
        }
        engine.init(param);
        initialised = true;
    }
    AsymmetricCipherKeyPair pair = engine.generateKeyPair();
    ElGamalPublicKeyParameters pub = (ElGamalPublicKeyParameters) pair.getPublic();
    ElGamalPrivateKeyParameters priv = (ElGamalPrivateKeyParameters) pair.getPrivate();
    return new KeyPair(new BCElGamalPublicKey(pub), new BCElGamalPrivateKey(priv));
}