Package org.bouncycastle.crypto.params

Examples of org.bouncycastle.crypto.params.RSAKeyParameters

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                                    }

                                    /*
                                    * Parse the servers public RSA key.
                                    */
                                    this.serverRsaKey = new RSAKeyParameters(
                                        false,
                                        rsaKey.getModulus(),
                                        rsaKey.getPublicExponent());

                                    connection_state = CS_SERVER_CERTIFICATE_RECEIVED;
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     */
    public void init(
        boolean                 forSigning,
        CipherParameters        param)
    {
        RSAKeyParameters    kParam;
        int                 lengthOfSalt = saltLength;

        if (param instanceof ParametersWithRandom)
        {
            ParametersWithRandom    p = (ParametersWithRandom)param;

            kParam = (RSAKeyParameters)p.getParameters();
            if (forSigning)
            {
                random = p.getRandom();
            }
        }
        else if (param instanceof ParametersWithSalt)
        {
            ParametersWithSalt    p = (ParametersWithSalt)param;

            kParam = (RSAKeyParameters)p.getParameters();
            standardSalt = p.getSalt();
            lengthOfSalt = standardSalt.length;
            if (standardSalt.length != saltLength)
            {
                throw new IllegalArgumentException("Fixed salt is of wrong length");
            }
        }
        else
        {
            kParam = (RSAKeyParameters)param;
            if (forSigning)
            {
                random = new SecureRandom();
            }
        }
       
        cipher.init(forSigning, kParam);

        keyBits = kParam.getModulus().bitLength();

        block = new byte[(keyBits + 7) / 8];
       
        if (trailer == TRAILER_IMPLICIT)
        {
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        if (algId.getObjectId().equals(PKCSObjectIdentifiers.rsaEncryption)
            || algId.getObjectId().equals(X509ObjectIdentifiers.id_ea_rsa))
        {
            RSAPublicKeyStructure   pubKey = new RSAPublicKeyStructure((ASN1Sequence)keyInfo.getPublicKey());

            return new RSAKeyParameters(false, pubKey.getModulus(), pubKey.getPublicExponent());
        }
        else if (algId.getObjectId().equals(PKCSObjectIdentifiers.dhKeyAgreement)
                 || algId.getObjectId().equals(X9ObjectIdentifiers.dhpublicnumber))
        {
            DHParameter params = new DHParameter((ASN1Sequence)keyInfo.getAlgorithmId().getParameters());
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        dP = d.remainder(pSub1);
        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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            }
        }

        cipher.init(forSigning, params);

        RSAKeyParameters kParam;

        if (params instanceof RSABlindingParameters)
        {
            kParam = ((RSABlindingParameters)params).getPublicKey();
        }
        else
        {
            kParam = (RSAKeyParameters)params;
        }
       
        emBits = kParam.getModulus().bitLength() - 1;

        block = new byte[(emBits + 7) / 8];

        reset();
    }
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