Examples of RSAPrivateCrtKeyParameters

Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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        BigInteger input = core.convertInput(in, inOff, inLen);

        BigInteger result;
        if (key instanceof RSAPrivateCrtKeyParameters)
        {
            RSAPrivateCrtKeyParameters k = (RSAPrivateCrtKeyParameters)key;

            BigInteger e = k.getPublicExponent();
            if (e != null)   // can't do blinding without a public exponent
            {
                BigInteger m = k.getModulus();
                BigInteger r = BigIntegers.createRandomInRange(ONE, m.subtract(ONE), random);

                BigInteger blindedInput = r.modPow(e, m).multiply(input).mod(m);
                BigInteger blindedResult = core.processBlock(blindedInput);
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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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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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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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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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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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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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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;

            if (k.getPublicExponent() != null)   // can't do blinding without a public exponent
            {
                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));
            }

            return core.convertOutput(core.processBlock(core.convertInput(in, inOff, inLen)));
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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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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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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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    {
        if (key instanceof RSAPrivateCrtKey)
        {
            RSAPrivateCrtKey    k = (RSAPrivateCrtKey)key;

            return new RSAPrivateCrtKeyParameters(k.getModulus(),
                k.getPublicExponent(), k.getPrivateExponent(),
                k.getPrimeP(), k.getPrimeQ(), k.getPrimeExponentP(),                            k.getPrimeExponentQ(), k.getCrtCoefficient());
        }
        else
        {
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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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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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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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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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Examples of org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters

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            RSAKeyParameters    pubParameters = new RSAKeyParameters(
                                                        false,
                                                        pubStruct.getModulus(),
                                                        pubStruct.getPublicExponent());
   
            RSAKeyParameters    privParameters = new RSAPrivateCrtKeyParameters(
                                                        privStruct.getModulus(),
                                                        privStruct.getPublicExponent(),
                                                        privStruct.getPrivateExponent(),
                                                        privStruct.getPrime1(),
                                                        privStruct.getPrime2(),
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