org.spongycastle.crypto.params.ECKeyGenerationParameters Java Examples

The following examples show how to use org.spongycastle.crypto.params.ECKeyGenerationParameters. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ECKeyPair.java    From BlockchainWallet-Crypto with GNU General Public License v3.0 6 votes vote down vote up 
public static ECKeyPair createNew(boolean compressed) {
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(domain,
            secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic();
    ECKeyPair k = new ECKeyPair();
    k.priv = privParams.getD();
    k.compressed = compressed;
    ECPoint multiply = CURVE.getG().multiply(k.priv);
    k.pub = multiply.getEncoded(false);
    k.pubComp = multiply.getEncoded(true);
    return k;
}
Example #2
Source File: Secp256k1.java    From neb.java with GNU Lesser General Public License v3.0 5 votes vote down vote up 
public static byte[] GenerateECKey() {
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(CURVE, Utils.SecureRandom());
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    BigInteger privKey = privParams.getD();
    return ByteUtils.BigIntegerToBytes(privKey, 32);
}
Example #3
Source File: ECKey.java    From nuls with MIT License 5 votes vote down vote up 
public ECKey(SecureRandom secureRandom) {
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(CURVE, secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic();
    priv = privParams.getD();
    pub = pubParams.getQ();
    creationTimeSeconds = System.currentTimeMillis();
}
Example #4
Source File: ECKey.java    From bitherj with Apache License 2.0 5 votes vote down vote up 
/**
 * Generates an entirely new keypair. Point compression is used so the resulting public key will be 33 bytes
 * (32 for the co-ordinate and 1 byte to represent the y bit).
 */
public static ECKey generateECKey(SecureRandom secureRandom) {

    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(CURVE, secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic();
    BigInteger priv = privParams.getD();
    boolean compressed = true;
    ECKey ecKey = new ECKey(priv, pubParams.getQ().getEncoded(compressed));
    ecKey.setCreationTimeSeconds(Utils.currentTimeSeconds());
    return ecKey;
}
Example #5
Source File: ECKey.java    From ethereumj with MIT License 5 votes vote down vote up 
/**
 * Generates an entirely new keypair with the given {@link SecureRandom} object. Point compression is used so the
 * resulting public key will be 33 bytes (32 for the co-ordinate and 1 byte to represent the y bit).
 */
public ECKey(SecureRandom secureRandom) {
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(CURVE, secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic();
    priv = privParams.getD();
    pub = CURVE.getCurve().decodePoint(pubParams.getQ().getEncoded(true));
}
Example #6
Source File: ECKeyPair.java    From bitseal with GNU General Public License v3.0 5 votes vote down vote up 
/** 
 * Generates an entirely new keypair. 
 * */
public ECKeyPair() 
{
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(ecParams, secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic();
    priv = privParams.getD();
    pub = pubParams.getQ().getEncoded();// The public key is an encoded point on the elliptic curve. It has no meaning independent of the curve.
}