Package org.bouncycastle.crypto.params

Examples of org.bouncycastle.crypto.params.ECPrivateKeyParameters

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            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.");
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                                            ecP.getSeed());
            }

            ECPrivateKeyStructure   ec = new ECPrivateKeyStructure((ASN1Sequence)keyInfo.getPrivateKey());

            return new ECPrivateKeyParameters(ec.getKey(), dParams);
        }
        else
        {
            throw new RuntimeException("algorithm identifier in key not recognised");
        }
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        int nBitLength = n.bitLength();
       
        BigInteger e = new BigInteger(1, digest);
        int eBitLength = e.bitLength();
       
        ECPrivateKeyParameters  privKey = (ECPrivateKeyParameters)key;
              
        if (eBitLength > nBitLength)
        {
            throw new DataLengthException("input too large for ECNR key.");
        }

        BigInteger r = null;
        BigInteger s = null;

        AsymmetricCipherKeyPair tempPair;
        do // generate r
        {
            // generate another, but very temporary, key pair using
            // the same EC parameters
            ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
           
            keyGen.init(new ECKeyGenerationParameters(privKey.getParameters(), this.random));
           
            tempPair = keyGen.generateKeyPair();

            //    BigInteger Vx = tempPair.getPublic().getW().getAffineX();
            ECPublicKeyParameters V = (ECPublicKeyParameters)tempPair.getPublic();        // get temp's public key
            BigInteger Vx = V.getQ().getX().toBigInteger();        // get the point's x coordinate
           
            r = Vx.add(e).mod(n);
        }
        while (r.equals(ECConstants.ZERO));

        // generate s
        BigInteger x = privKey.getD();                // private key value
        BigInteger u = ((ECPrivateKeyParameters)tempPair.getPrivate()).getD();    // temp's private key value
        s = u.subtract(r.multiply(x)).mod(n);

        BigInteger[]  res = new BigInteger[2];
        res[0] = r;
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                throw new IllegalStateException("EC Key Pair Generator not initialised");
            }

            AsymmetricCipherKeyPair     pair = engine.generateKeyPair();
            ECPublicKeyParameters       pub = (ECPublicKeyParameters)pair.getPublic();
            ECPrivateKeyParameters      priv = (ECPrivateKeyParameters)pair.getPrivate();

            if (ecParams instanceof ECParameterSpec)
            {
                ECParameterSpec p = (ECParameterSpec)ecParams;
               
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        int nBitLength = n.bitLength();
       
        BigInteger e = new BigInteger(1, digest);
        int eBitLength = e.bitLength();
       
        ECPrivateKeyParameters  privKey = (ECPrivateKeyParameters)key;
              
        if (eBitLength > nBitLength)
        {
            throw new DataLengthException("input too large for ECNR key.");
        }

        BigInteger r = null;
        BigInteger s = null;

        AsymmetricCipherKeyPair tempPair;
        do // generate r
        {
            // generate another, but very temporary, key pair using
            // the same EC parameters
            ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
           
            keyGen.init(new ECKeyGenerationParameters(privKey.getParameters(), this.random));
           
            tempPair = keyGen.generateKeyPair();

            //    BigInteger Vx = tempPair.getPublic().getW().getAffineX();
            ECPublicKeyParameters V = (ECPublicKeyParameters)tempPair.getPublic();        // get temp's public key
            BigInteger Vx = V.getQ().getX().toBigInteger();        // get the point's x coordinate
           
            r = Vx.add(e).mod(n);
        }
        while (r.equals(ECConstants.ZERO));

        // generate s
        BigInteger x = privKey.getD();                // private key value
        BigInteger u = ((ECPrivateKeyParameters)tempPair.getPrivate()).getD();    // temp's private key value
        s = u.subtract(r.multiply(x)).mod(n);

        BigInteger[]  res = new BigInteger[2];
        res[0] = r;
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                                            ecP.getSeed());
            }

            ECPrivateKeyStructure   ec = new ECPrivateKeyStructure((ASN1Sequence)keyInfo.getPrivateKey());

            return new ECPrivateKeyParameters(ec.getKey(), dParams);
        }
        else
        {
            throw new RuntimeException("algorithm identifier in key not recognised");
        }
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            ECDomainParameters params = new ECDomainParameters(
                    curve,
                    curve.decodePoint(Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012")), // G
                    new BigInteger("6277101735386680763835789423176059013767194773182842284081")); // n

            ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
                new BigInteger("651056770906015076056810763456358567190100156695615665659"), // d
                params);

            ParametersWithRandom param = new ParametersWithRandom(priKey, k);
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            ECDomainParameters params = new ECDomainParameters(
                curve,
                curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
                new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n

            ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
                new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
                params);

            ECDSASigner ecdsa = new ECDSASigner();
            ParametersWithRandom param = new ParametersWithRandom(priKey, k);
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    public BigInteger calculateAgreement(CipherParameters pubKey)
    {
        MQVPublicParameters pubParams = (MQVPublicParameters)pubKey;

        ECPrivateKeyParameters staticPrivateKey = privParams.getStaticPrivateKey();

        ECPoint agreement = calculateMqvAgreement(staticPrivateKey.getParameters(), staticPrivateKey,
            privParams.getEphemeralPrivateKey(), privParams.getEphemeralPublicKey(),
            pubParams.getStaticPublicKey(), pubParams.getEphemeralPublicKey());

        return agreement.getX().toBigInteger();
    }
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            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.");
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Related Classes of org.bouncycastle.crypto.params.ECPrivateKeyParameters

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  • org.bouncycastle.crypto.agreement.ECMQVBasicAgreement
  • org.bouncycastle.crypto.generators.DSTU4145KeyPairGenerator
  • org.bouncycastle.crypto.generators.ECKeyPairGenerator
  • org.bouncycastle.crypto.signers.ECNRSigner
  • org.bouncycastle.crypto.test.ECTest$ECDSA192bitPrime
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  • org.bouncycastle.crypto.util.PrivateKeyFactory
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