Examples of ECPrivateKeyParameters

Examples of org.bouncycastle2.crypto.params.ECPrivateKeyParameters

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                throw new InvalidKeyException(kaAlgorithm + " key agreement requires "
                    + getSimpleName(MQVPrivateKey.class) + " for initialisation");
            }

            MQVPrivateKey mqvPrivKey = (MQVPrivateKey)key;
            ECPrivateKeyParameters staticPrivKey = (ECPrivateKeyParameters)
                ECUtil.generatePrivateKeyParameter(mqvPrivKey.getStaticPrivateKey());
            ECPrivateKeyParameters ephemPrivKey = (ECPrivateKeyParameters)
                ECUtil.generatePrivateKeyParameter(mqvPrivKey.getEphemeralPrivateKey());

            ECPublicKeyParameters ephemPubKey = null;
            if (mqvPrivKey.getEphemeralPublicKey() != null)
            {
                ephemPubKey = (ECPublicKeyParameters)
                    ECUtil.generatePublicKeyParameter(mqvPrivKey.getEphemeralPublicKey());
            }

            MQVPrivateParameters localParams = new MQVPrivateParameters(staticPrivKey, ephemPrivKey, ephemPubKey);
            this.parameters = staticPrivKey.getParameters();

            // TODO Validate that all the keys are using the same parameters?

            agreement.init(localParams);
        }
        else
        {
            if (!(key instanceof ECPrivateKey))
            {
                throw new InvalidKeyException(kaAlgorithm + " key agreement requires "
                    + getSimpleName(ECPrivateKey.class) + " for initialisation");
            }

            ECPrivateKeyParameters privKey = (ECPrivateKeyParameters)ECUtil.generatePrivateKeyParameter((PrivateKey)key);
            this.parameters = privKey.getParameters();

            agreement.init(privKey);
        }
    }
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Examples of org.bouncycastle2.crypto.params.ECPrivateKeyParameters

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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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Examples of org.bouncycastle2.crypto.params.ECPrivateKeyParameters

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        ECPoint Q = params.getG().multiply(d);

        return new AsymmetricCipherKeyPair(
            new ECPublicKeyParameters(Q, params),
            new ECPrivateKeyParameters(d, params));
    }
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Examples of org.bouncycastle2.crypto.params.ECPrivateKeyParameters

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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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Examples of org.spongycastle.crypto.params.ECPrivateKeyParameters

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    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));
    }
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Examples of org.spongycastle.crypto.params.ECPrivateKeyParameters

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        // No decryption of private key required.
        if (priv == null)
            throw new MissingPrivateKeyException();
        check(priv != null, "Private key must not be null");
        ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
        ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(priv, CURVE);
        signer.init(true, privKey);
        BigInteger[] components = signer.generateSignature(input);
        return new ECDSASignature(components[0], components[1]).toCanonicalised();
    }
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Examples of org.spongycastle.crypto.params.ECPrivateKeyParameters

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        // different pledges.
        ECKey signingKey = new ECKey() {
            @Override
            protected ECDSASignature doSign(Sha256Hash input, BigInteger privateKeyForSigning) {
                ECDSASigner signer = new ECDSASigner();
                ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKeyForSigning, CURVE);
                signer.init(true, privKey);
                BigInteger[] components = signer.generateSignature(input.getBytes());
                return new ECDSASignature(components[0], components[1]).toCanonicalised();
            }
        };
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