Package org.bouncycastle.crypto.params

Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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            throw new IllegalStateException("RSA engine not initialised");
        }

        if (key instanceof RSAPrivateCrtKeyParameters)
        {
            RSAPrivateCrtKeyParameters k = (RSAPrivateCrtKeyParameters)key;
            BigInteger input = core.convertInput(in, inOff, inLen);
            BigInteger m = k.getModulus();
            BigInteger r = calculateR(m);
            BigInteger result = core.processBlock(r.modPow(k.getPublicExponent(), m).multiply(input).mod(m));

            return core.convertOutput(result.multiply(r.modInverse(m)).mod(m));
        }
        else
        {
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            //
            // we have the extra factors, use the Chinese Remainder Theorem - the author
            // wishes to express his thanks to Dirk Bonekaemper at rtsffm.com for
            // advice regarding the expression of this.
            //
            RSAPrivateCrtKeyParameters crtKey = (RSAPrivateCrtKeyParameters)key;

            BigInteger p = crtKey.getP();
            BigInteger q = crtKey.getQ();
            BigInteger dP = crtKey.getDP();
            BigInteger dQ = crtKey.getDQ();
            BigInteger qInv = crtKey.getQInv();

            BigInteger mP, mQ, h, m;

            // mP = ((input mod p) ^ dP)) mod p
            mP = (input.remainder(p)).modPow(dP, p);
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        public KeyPair generateKeyPair()
        {
            AsymmetricCipherKeyPair     pair = engine.generateKeyPair();
            RSAKeyParameters            pub = (RSAKeyParameters)pair.getPublic();
            RSAPrivateCrtKeyParameters  priv = (RSAPrivateCrtKeyParameters)pair.getPrivate();

            return new KeyPair(new JCERSAPublicKey(pub),
                               new JCERSAPrivateCrtKey(priv));
        }
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            case PGPPublicKey.RSA_GENERAL:
            case PGPPublicKey.RSA_SIGN:
                RSAPublicBCPGKey rsaPub = (RSAPublicBCPGKey)pubPk.getKey();
                RSASecretBCPGKey rsaPriv = (RSASecretBCPGKey)privPk;

                return new RSAPrivateCrtKeyParameters(rsaPriv.getModulus(), rsaPub.getPublicExponent(), rsaPriv.getPrivateExponent(), rsaPriv.getPrimeP(), rsaPriv.getPrimeQ(), rsaPriv.getPrimeExponentP(), rsaPriv.getPrimeExponentQ(), rsaPriv.getCrtCoefficient());
            case PGPPublicKey.DSA:
                DSAPublicBCPGKey    dsaPub = (DSAPublicBCPGKey)pubPk.getKey();
                DSASecretBCPGKey dsaPriv = (DSASecretBCPGKey)privPk;

                return new DSAPrivateKeyParameters(dsaPriv.getX(), new DSAParameters(dsaPub.getP(), dsaPub.getQ(),  dsaPub.getG()));
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        if (algId.getObjectId().equals(PKCSObjectIdentifiers.rsaEncryption))
        {
            RSAPrivateKeyStructure  keyStructure = new RSAPrivateKeyStructure((ASN1Sequence)keyInfo.getPrivateKey());

            return new RSAPrivateCrtKeyParameters(
                                        keyStructure.getModulus(),
                                        keyStructure.getPublicExponent(),
                                        keyStructure.getPrivateExponent(),
                                        keyStructure.getPrime1(),
                                        keyStructure.getPrime2(),
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        public KeyPair generateKeyPair()
        {
            AsymmetricCipherKeyPair     pair = engine.generateKeyPair();
            RSAKeyParameters            pub = (RSAKeyParameters)pair.getPublic();
            RSAPrivateCrtKeyParameters  priv = (RSAPrivateCrtKeyParameters)pair.getPrivate();

            return new KeyPair(new JCERSAPublicKey(pub),
                               new JCERSAPrivateCrtKey(priv));
        }
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    BigInteger intPrimeQ = new BigInteger(primeQ);
    BigInteger intPrimeExponentP = new BigInteger(primeExponentP);
    BigInteger intPrimeExponentQ = new BigInteger(primeExponentQ);
    BigInteger intCrtCoefficient = new BigInteger(crtCoefficient);

    RSAPrivateCrtKeyParameters RSAprivKey =  new RSAPrivateCrtKeyParameters
            (intModulus, intPubExponent, intPrivExponent, intPrimeP,
            intPrimeQ, intPrimeExponentP, intPrimeExponentQ, intCrtCoefficient);
    byte[] toDecrypt = Hex.decode(input);
    cipher = new PKCS1Encoding(new RSAEngine());
    cipher.init(false, RSAprivKey);
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        public KeyPair generateKeyPair()
        {
            AsymmetricCipherKeyPair     pair = engine.generateKeyPair();
            RSAKeyParameters            pub = (RSAKeyParameters)pair.getPublic();
            RSAPrivateCrtKeyParameters  priv = (RSAPrivateCrtKeyParameters)pair.getPrivate();

            return new KeyPair(new JCERSAPublicKey(pub),
                               new JCERSAPrivateCrtKey(priv));
        }
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        dQ = d.remainder(qSub1);
        qInv = q.modInverse(p);

        return new AsymmetricCipherKeyPair(
                new RSAKeyParameters(false, n, e),
                new RSAPrivateCrtKeyParameters(n, e, d, p, q, dP, dQ, qInv));
    }
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Related Classes of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

  • com.jcraft.jsch.bc.KeyPairGenRSA
  • Cryptography
  • org.bouncycastle.crypto.engines.RSABlindedEngine
  • org.bouncycastle.crypto.engines.RSACoreEngine
  • org.bouncycastle.crypto.engines.RSAEngine
  • org.bouncycastle.crypto.generators.RSAKeyPairGenerator
  • org.bouncycastle.crypto.test.OAEPTest$OAEPTester
  • org.bouncycastle.crypto.test.RSATest
  • org.bouncycastle.crypto.util.PrivateKeyFactory
  • org.bouncycastle.crypto.util.PrivateKeyInfoFactory
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