Examples with ECPrivateKeyParameters org.bouncycastle.crypto.params.ECPrivateKeyParameters used on opensource projects

Example 6 with ECPrivateKeyParameters

use of org.bouncycastle.crypto.params.ECPrivateKeyParameters in project XobotOS by xamarin.

the class ECUtil method generatePrivateKeyParameter.

public static AsymmetricKeyParameter generatePrivateKeyParameter(PrivateKey key) throws InvalidKeyException {
    if (key instanceof ECPrivateKey) {
        ECPrivateKey k = (ECPrivateKey) key;
        ECParameterSpec s = k.getParameters();
        if (s == null) {
            s = ProviderUtil.getEcImplicitlyCa();
        }
        return new ECPrivateKeyParameters(k.getD(), new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
    }
    throw new InvalidKeyException("can't identify EC private key.");
}

Example 7 with ECPrivateKeyParameters

use of org.bouncycastle.crypto.params.ECPrivateKeyParameters in project web3sdk by FISCO-BCOS.

the class Sign method sign.

private static ECDSASignature sign(byte[] transactionHash, BigInteger privateKey) {
    ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
    ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKey, CURVE);
    signer.init(true, privKey);
    BigInteger[] components = signer.generateSignature(transactionHash);
    return new ECDSASignature(components[0], components[1]).toCanonicalised();
}

Example 8 with ECPrivateKeyParameters

use of org.bouncycastle.crypto.params.ECPrivateKeyParameters in project nuls by nuls-io.

the class Cipher method initEnc.

public ECPoint initEnc(SM2 sm2, ECPoint userKey) {
    AsymmetricCipherKeyPair key = sm2.ecc_key_pair_generator.generateKeyPair();
    ECPrivateKeyParameters ecpriv = (ECPrivateKeyParameters) key.getPrivate();
    ECPublicKeyParameters ecpub = (ECPublicKeyParameters) key.getPublic();
    BigInteger k = ecpriv.getD();
    ECPoint c1 = ecpub.getQ();
    this.p2 = userKey.multiply(k);
    reset();
    return c1;
}

Example 9 with ECPrivateKeyParameters

use of org.bouncycastle.crypto.params.ECPrivateKeyParameters in project xipki by xipki.

the class DSAPlainDigestSigner method init.

@Override
public void init(boolean forSigning, CipherParameters parameters) {
    this.forSigning = forSigning;
    AsymmetricKeyParameter param;
    if (parameters instanceof ParametersWithRandom) {
        param = (AsymmetricKeyParameter) ((ParametersWithRandom) parameters).getParameters();
    } else {
        param = (AsymmetricKeyParameter) parameters;
    }
    ParamUtil.requireNonNull("param", param);
    if (param instanceof ECPublicKeyParameters) {
        keyBitLen = ((ECPublicKeyParameters) param).getParameters().getCurve().getFieldSize();
    } else if (param instanceof ECPrivateKeyParameters) {
        keyBitLen = ((ECPrivateKeyParameters) param).getParameters().getCurve().getFieldSize();
    } else if (param instanceof DSAPublicKeyParameters) {
        keyBitLen = ((DSAPublicKeyParameters) param).getParameters().getQ().bitLength();
    } else if (param instanceof DSAPrivateKeyParameters) {
        keyBitLen = ((DSAPrivateKeyParameters) param).getParameters().getQ().bitLength();
    } else {
        throw new IllegalArgumentException("unknown parameters: " + param.getClass().getName());
    }
    if (forSigning && !param.isPrivate()) {
        throw new IllegalArgumentException("Signing Requires Private Key.");
    }
    if (!forSigning && param.isPrivate()) {
        throw new IllegalArgumentException("Verification Requires Public Key.");
    }
    reset();
    dsaSigner.init(forSigning, parameters);
}

Example 10 with ECPrivateKeyParameters

use of org.bouncycastle.crypto.params.ECPrivateKeyParameters in project jruby-openssl by jruby.

the class PKeyEC method dsa_sign_asn1.

@JRubyMethod(name = "dsa_sign_asn1")
public IRubyObject dsa_sign_asn1(final ThreadContext context, final IRubyObject data) {
    try {
        ECNamedCurveParameterSpec params = ECNamedCurveTable.getParameterSpec(getCurveName());
        ASN1ObjectIdentifier oid = getCurveOID(getCurveName());
        ECNamedDomainParameters domainParams = new ECNamedDomainParameters(oid, params.getCurve(), params.getG(), params.getN(), params.getH(), params.getSeed());
        final ECDSASigner signer = new ECDSASigner();
        final ECPrivateKey privKey = (ECPrivateKey) this.privateKey;
        signer.init(true, new ECPrivateKeyParameters(privKey.getS(), domainParams));
        final byte[] message = data.convertToString().getBytes();
        // [r, s]
        BigInteger[] signature = signer.generateSignature(message);
        // final byte[] r = signature[0].toByteArray();
        // final byte[] s = signature[1].toByteArray();
        // // ASN.1 encode as: 0x30 len 0x02 rlen (r) 0x02 slen (s)
        // final int len = 1 + (1 + r.length) + 1 + (1 + s.length);
        // 
        // final byte[] encoded = new byte[1 + 1 + len]; int i;
        // encoded[0] = 0x30;
        // encoded[1] = (byte) len;
        // encoded[2] = 0x20;
        // encoded[3] = (byte) r.length;
        // System.arraycopy(r, 0, encoded, i = 4, r.length); i += r.length;
        // encoded[i++] = 0x20;
        // encoded[i++] = (byte) s.length;
        // System.arraycopy(s, 0, encoded, i, s.length);
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        ASN1OutputStream asn1 = new ASN1OutputStream(bytes);
        ASN1EncodableVector v = new ASN1EncodableVector();
        // r
        v.add(new ASN1Integer(signature[0]));
        // s
        v.add(new ASN1Integer(signature[1]));
        asn1.writeObject(new DLSequence(v));
        return StringHelper.newString(context.runtime, bytes.buffer(), bytes.size());
    } catch (IOException ex) {
        throw newECError(context.runtime, ex.toString());
    } catch (RuntimeException ex) {
        throw newECError(context.runtime, ex.toString());
    }
}