Example usage for org.bouncycastle.crypto AsymmetricCipherKeyPairGenerator init

Introduction

In this page you can find the example usage for org.bouncycastle.crypto AsymmetricCipherKeyPairGenerator init.

Prototype

public void init(KeyGenerationParameters param);

Source Link

Document

intialise the key pair generator.

Usage

From source file:beta01.SimpleRootCA.java

/**
 * Create a random 2048 bit RSA key pair
 */// w ww.  j  a  va2 s . c o  m
public static AsymmetricCipherKeyPair generateRSAKeyPair() throws Exception {
    AsymmetricCipherKeyPairGenerator kpGen = new RSAKeyPairGenerator();

    kpGen.init(new RSAKeyGenerationParameters(BigInteger.valueOf(0x11), new SecureRandom(), 2048, 12));

    return kpGen.generateKeyPair();
}

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From source file:eu.betaas.taas.securitymanager.common.ec.ECKeyPairGen.java

License:Apache License

/**
 * Generate a random EC (Elliptic Curve) random 192-bit key pair (equivalent 
 * to 1536-bit RSA) based on NIST and SECG, using Bc (Bouncy Castle) classes
 * @return a pair of EC keys (AsymmetricCipherKeyPair type)
 *//*ww  w .j a  v a  2  s .  c o m*/
public static AsymmetricCipherKeyPair generateECKeyPair192() {
    AsymmetricCipherKeyPairGenerator kpGen = new ECKeyPairGenerator();

    // First, define an EC curve
    // ECCurve.Fp(p, a, b); p = prime; a,b = constants defined in equation E: y^2=x^3+ax+b (mod p)
    ECCurve curve = new ECCurve.Fp(new BigInteger(ECParams.P_192_R1, 16), // p 
            new BigInteger(ECParams.A_192_R1, 16), // a
            new BigInteger(ECParams.B_192_R1, 16)); // b

    byte[] seed = Hex.decode(ECParams.SEED_192_R1);

    // finally use the seed in the ECKeyGenerationParameters along with the others
    // ECKeyGenerationParameters(ECDomainParameters(ECCurve, G, n, h),random)
    kpGen.init(new ECKeyGenerationParameters(
            new ECDomainParameters(curve, curve.decodePoint(Hex.decode(ECParams.G_192_R1_NCOMP)), // G       
                    new BigInteger(ECParams.N_192_R1, 16), // n
                    new BigInteger(ECParams.H_192_R1, 16), // h 
                    seed), // seed
            new SecureRandom()));

    return kpGen.generateKeyPair();
}

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From source file:eu.betaas.taas.securitymanager.common.ec.ECKeyPairGen.java

License:Apache License

/**
 * Generate a random EC (Elliptic Curve) random 224-bit key pair (equivalent 
 * to 2048-bit RSA) based on NIST and SECG, using Bc (Bouncy Castle) classes
 * @return a pair of EC keys (AsymmetricCipherKeyPair type)
 *///from   ww w  .  j a  va  2s. c  o m
public static AsymmetricCipherKeyPair generateECKeyPair224() {
    AsymmetricCipherKeyPairGenerator kpGen = new ECKeyPairGenerator();

    // ECCurve.Fp(p, a, b); p = prime; a,b = constants defined in equation E: y^2=x^3+ax+b (mod p)
    ECCurve curve = new ECCurve.Fp(new BigInteger(ECParams.P_224_R1, 16), new BigInteger(ECParams.A_224_R1, 16),
            new BigInteger(ECParams.B_224_R1, 16));

    byte[] seed = Hex.decode(ECParams.SEED_224_R1);

    // finally use the seed in the ECKeyGenerationParameters along with the others
    // ECKeyGenerationParameters(ECDomainParameters(ECCurve, G, n, h),random)
    kpGen.init(new ECKeyGenerationParameters(
            new ECDomainParameters(curve, curve.decodePoint(Hex.decode(ECParams.G_224_R1_NCOMP)),
                    new BigInteger(ECParams.N_224_R1, 16), new BigInteger(ECParams.H_224_R1, 16), seed),
            new SecureRandom()));

    return kpGen.generateKeyPair();
}

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From source file:exchange.User.java

public User(String nick, String passw, String fonct) throws NoSuchAlgorithmException, PGPException {
    this.nickname = nick;
    this.password = passw;
    this.fonction = fonct;

    // Initialisation de la paire de cls PGP
    AsymmetricCipherKeyPairGenerator gen = new RSAKeyPairGenerator();

    gen.init(new RSAKeyGenerationParameters(new BigInteger("10001", 16), //publicExponent
            SecureRandom.getInstance("SHA1PRNG"), //prng
            1024, //strength
            80//certainty
    ));//from   www.  j a v a2s.  co  m
    AsymmetricCipherKeyPair kPair = gen.generateKeyPair();

    keyPair = new BcPGPKeyPair(PublicKeyAlgorithmTags.RSA_SIGN, kPair, new Date());
    privateKey = keyPair.getPrivateKey();
    keyAlgorithm = keyPair.getPublicKey().getAlgorithm();
}

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From source file:org.spout.api.security.SecurityHandler.java

License:Open Source License

public void initGenerator(int keySize, String algorithm, AsymmetricCipherKeyPairGenerator generator,
        SecureRandom random) {//  ww  w  . j av  a2 s. co m
    if (algorithm.equals("RSA")) {
        RSAKeyGenerationParameters params = new RSAKeyGenerationParameters(new BigInteger("10001", 16), random,
                keySize, 80);
        generator.init(params);
    }
}

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From source file:org.xwiki.crypto.internal.asymmetric.generator.BcDHKeyPairGenerator.java

License:Open Source License

@Override
public AsymmetricKeyPair generate(KeyGenerationParameters parameters) {
    org.bouncycastle.crypto.params.DHParameters keyGenParams;

    if (parameters instanceof DHKeyParametersGenerationParameters) {
        keyGenParams = BcDHKeyParameterGenerator.getDhParameters(random.get(),
                (DHKeyParametersGenerationParameters) parameters);
    } else if (parameters instanceof DHKeyGenerationParameters) {
        keyGenParams = getDhParameters((DHKeyGenerationParameters) parameters);
    } else {//w  ww  .  j  a v  a2  s .  c om
        throw new IllegalArgumentException(
                "Invalid parameters for DSA key generator: " + parameters.getClass().getName());
    }

    AsymmetricCipherKeyPairGenerator generator = new DHKeyPairGenerator();
    generator.init(new org.bouncycastle.crypto.params.DHKeyGenerationParameters(random.get(), keyGenParams));

    return getKeyPair(generator.generateKeyPair());
}

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From source file:org.xwiki.crypto.internal.asymmetric.generator.BcDSAKeyPairGenerator.java

License:Open Source License

@Override
public AsymmetricKeyPair generate(KeyGenerationParameters parameters) {
    org.bouncycastle.crypto.params.DSAParameters keyGenParams;

    if (parameters instanceof DSAKeyParametersGenerationParameters) {
        keyGenParams = getDsaParameters((DSAKeyGenerationParameters) parametersGenerator
                .generate((DSAKeyParametersGenerationParameters) parameters));
    } else if (parameters instanceof DSAKeyGenerationParameters) {
        keyGenParams = getDsaParameters((DSAKeyGenerationParameters) parameters);
    } else {//  ww w .j  ava2  s .c o  m
        throw new IllegalArgumentException(
                "Invalid parameters for DSA key generator: " + parameters.getClass().getName());
    }

    AsymmetricCipherKeyPairGenerator generator = new DSAKeyPairGenerator();
    generator.init(new org.bouncycastle.crypto.params.DSAKeyGenerationParameters(random.get(), keyGenParams));

    return getKeyPair(generator.generateKeyPair());
}

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From source file:org.xwiki.crypto.internal.asymmetric.generator.BcRSAKeyPairGenerator.java

License:Open Source License

@Override
public AsymmetricKeyPair generate(KeyGenerationParameters parameters) {
    if (!(parameters instanceof RSAKeyGenerationParameters)) {
        throw new IllegalArgumentException(
                "Invalid parameters for RSA key generator: " + parameters.getClass().getName());
    }/*from  w  ww  . j  a  va  2  s . c  o  m*/

    RSAKeyGenerationParameters params = (RSAKeyGenerationParameters) parameters;

    org.bouncycastle.crypto.params.RSAKeyGenerationParameters genParam = new org.bouncycastle.crypto.params.RSAKeyGenerationParameters(
            params.getPublicExponent(), random.get(), params.getStrength() * 8, params.getCertainty());

    AsymmetricCipherKeyPairGenerator generator = new RSAKeyPairGenerator();
    generator.init(genParam);

    return getKeyPair(generator.generateKeyPair());
}

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