Package org.bouncycastle2.crypto.params

Examples of org.bouncycastle2.crypto.params.GOST3410Parameters

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            GOST3410ParameterSpec gParams,
            SecureRandom          random)
        {
            GOST3410PublicKeyParameterSetSpec spec = gParams.getPublicKeyParameters();
           
            param = new GOST3410KeyGenerationParameters(random, new GOST3410Parameters(spec.getP(), spec.getQ(), spec.getA()));
           
            engine.init(param);
           
            initialised = true;
            gost3410Params = gParams;
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            else
            {
                pGen.init(strength, 2, new SecureRandom());
            }
           
            GOST3410Parameters p = pGen.generateParameters();
           
            AlgorithmParameters params;
           
            try
            {
                params = AlgorithmParameters.getInstance("GOST3410", "BC2");
                params.init(new GOST3410ParameterSpec(new GOST3410PublicKeyParameterSetSpec(p.getP(), p.getQ(), p.getA())));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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        }

        public AsymmetricCipherKeyPair generateKeyPair()
        {
            BigInteger      p, q, a, x, y;
            GOST3410Parameters   GOST3410Params = param.getParameters();
            SecureRandom    random = param.getRandom();

            q = GOST3410Params.getQ();
            p = GOST3410Params.getP();
            a = GOST3410Params.getA();

            do
            {
                x = new BigInteger(256, random);
            }
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            }
            p = pq[0];  q = pq[1];
            a = procedure_C(p, q);
            //System.out.println("p:"+p.toString(16)+"\n"+"q:"+q.toString(16)+"\n"+"a:"+a.toString(16));
            //System.out.println("p:"+p+"\n"+"q:"+q+"\n"+"a:"+a);
            return new GOST3410Parameters(p, q, a, new GOST3410ValidationParameters(x0, c));
        }
        else
        {
            x0L = init_random.nextLong();
            cL  = init_random.nextLong();

            switch(size)
            {
            case 512: 
                procedure_Aa(x0L, cL, pq, 512);
                break;
            case 1024:
                procedure_Bb(x0L, cL, pq);
                break;
            default:
                throw new IllegalStateException("Ooops! key size 512 or 1024 bit.");
            }
            p = pq[0];  q = pq[1];
            a = procedure_C(p, q);
            //System.out.println("p:"+p.toString(16)+"\n"+"q:"+q.toString(16)+"\n"+"a:"+a.toString(16));
            //System.out.println("p:"+p+"\n"+"q:"+q+"\n"+"a:"+a);
            return new GOST3410Parameters(p, q, a, new GOST3410ValidationParameters(x0L, cL));
        }
    }
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                ivParam = (ParametersWithIV)param;
            }
        }
        else if (params == null)
        {
            param = new KeyParameter(key.getEncoded());
        }
        else if (params instanceof IvParameterSpec)
        {
            if (ivLength != 0)
            {
                param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec)params).getIV());
                ivParam = (ParametersWithIV)param;
            }
            else
            {
                param = new KeyParameter(key.getEncoded());
            }
        }
        else if (params instanceof RC2ParameterSpec)
        {
            RC2ParameterSpec    rc2Param = (RC2ParameterSpec)params;
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        }
        else if (params instanceof IvParameterSpec)
        {
            if (ivLength != 0)
            {
                param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec)params).getIV());
                ivParam = (ParametersWithIV)param;
            }
            else
            {
                param = new KeyParameter(key.getEncoded());
            }
        }
        else if (params instanceof RC2ParameterSpec)
        {
            RC2ParameterSpec    rc2Param = (RC2ParameterSpec)params;

            param = new RC2Parameters(key.getEncoded(), ((RC2ParameterSpec)params).getEffectiveKeyBits());

            if (rc2Param.getIV() != null && ivLength != 0)
            {
                param = new ParametersWithIV(param, rc2Param.getIV());
                ivParam = (ParametersWithIV)param;
            }
        }
        else if (params instanceof RC5ParameterSpec)
        {
            RC5ParameterSpec    rc5Param = (RC5ParameterSpec)params;

            param = new RC5Parameters(key.getEncoded(), ((RC5ParameterSpec)params).getRounds());
            if (rc5Param.getWordSize() != 32)
            {
                throw new IllegalArgumentException("can only accept RC5 word size 32 (at the moment...)");
            }
            if ((rc5Param.getIV() != null) && (ivLength != 0))
            {
                param = new ParametersWithIV(param, rc5Param.getIV());
                ivParam = (ParametersWithIV)param;
            }
        }
        else
        {
            throw new InvalidAlgorithmParameterException("unknown parameter type.");
        }

        if ((ivLength != 0) && !(param instanceof ParametersWithIV))
        {
            if (random == null)
            {
                random = new SecureRandom();
            }

            if ((opmode == Cipher.ENCRYPT_MODE) || (opmode == Cipher.WRAP_MODE))
            {
                byte[]  iv = new byte[ivLength];

                random.nextBytes(iv);
                param = new ParametersWithIV(param, iv);
                ivParam = (ParametersWithIV)param;
            }
            else
            {
                throw new InvalidAlgorithmParameterException("no IV set when one expected");
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        }
        else if (params instanceof RC2ParameterSpec)
        {
            RC2ParameterSpec    rc2Param = (RC2ParameterSpec)params;

            param = new RC2Parameters(key.getEncoded(), ((RC2ParameterSpec)params).getEffectiveKeyBits());

            if (rc2Param.getIV() != null && ivLength != 0)
            {
                param = new ParametersWithIV(param, rc2Param.getIV());
                ivParam = (ParametersWithIV)param;
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        }
        else if (params instanceof RC5ParameterSpec)
        {
            RC5ParameterSpec    rc5Param = (RC5ParameterSpec)params;

            param = new RC5Parameters(key.getEncoded(), ((RC5ParameterSpec)params).getRounds());
            if (rc5Param.getWordSize() != 32)
            {
                throw new IllegalArgumentException("can only accept RC5 word size 32 (at the moment...)");
            }
            if ((rc5Param.getIV() != null) && (ivLength != 0))
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    }
   
    static RSAKeyParameters generatePublicKeyParameter(
        RSAPublicKey    key)
    {
        return new RSAKeyParameters(false, key.getModulus(), key.getPublicExponent());

    }
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        }
        else
        {
            RSAPrivateKey    k = key;

            return new RSAKeyParameters(true, k.getModulus(), k.getPrivateExponent());
        }
    }
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Related Classes of org.bouncycastle2.crypto.params.GOST3410Parameters

  • org.bouncycastle2.asn1.ASN1InputStream
  • org.bouncycastle2.asn1.ASN1Sequence
  • org.bouncycastle2.asn1.cryptopro.GOST3410PublicKeyAlgParameters
  • org.bouncycastle2.asn1.DERObjectIdentifier
  • org.bouncycastle2.asn1.DEROctetString
  • org.bouncycastle2.asn1.pkcs.RSAPrivateKeyStructure
  • org.bouncycastle2.asn1.x509.RSAPublicKeyStructure
  • org.bouncycastle2.bcpg.sig.PreferredAlgorithms
  • org.bouncycastle2.crypto.BufferedBlockCipher
  • org.bouncycastle2.crypto.CipherParameters
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