Package org.bouncycastle.crypto.generators

Examples of org.bouncycastle.crypto.generators.DSAParametersGenerator

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            throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for DSA parameter generation.");
        }

        protected AlgorithmParameters engineGenerateParameters()
        {
            DSAParametersGenerator pGen = new DSAParametersGenerator();

      if ( random != null )
      {
        pGen.init(strength, 20, random);
      }
      else
      {
        pGen.init(strength, 20, new SecureRandom());
      }

            DSAParameters p = pGen.generateParameters();

            AlgorithmParameters params;

            try
            {
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        throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for DSA parameter generation.");
    }

    protected AlgorithmParameters engineGenerateParameters()
    {
        DSAParametersGenerator pGen;

        if (strength <= 1024)
        {
            pGen = new DSAParametersGenerator();
        }
        else
        {
            pGen = new DSAParametersGenerator(new SHA256Digest());
        }

        if (random == null)
        {
            random = new SecureRandom();
        }

        if (strength == 1024)
        {
            params = new DSAParameterGenerationParameters(1024, 160, 80, random);
            pGen.init(params);
        }
        else if (strength > 1024)
        {
            params = new DSAParameterGenerationParameters(strength, 256, 80, random);
            pGen.init(params);
        }
        else
        {
            pGen.init(strength, 20, random);
        }

        DSAParameters p = pGen.generateParameters();

        AlgorithmParameters params;

        try
        {
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    public KeyPair generateKeyPair()
    {
        if (!initialised)
        {
            DSAParametersGenerator pGen = new DSAParametersGenerator();

            pGen.init(strength, certainty, random);
            param = new DSAKeyGenerationParameters(random, pGen.generateParameters());
            engine.init(param);
            initialised = true;
        }

        AsymmetricCipherKeyPair pair = engine.generateKeyPair();
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        public KeyPair generateKeyPair()
        {
            if (!initialised)
            {
                DSAParametersGenerator   pGen = new DSAParametersGenerator();

                pGen.init(strength, certainty, random);
                param = new DSAKeyGenerationParameters(random, pGen.generateParameters());
                engine.init(param);
                initialised = true;
            }

            AsymmetricCipherKeyPair   pair = engine.generateKeyPair();
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            throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for DSA parameter generation.");
        }

        protected AlgorithmParameters engineGenerateParameters()
        {
            DSAParametersGenerator pGen = new DSAParametersGenerator();

            if (random != null)
            {
                pGen.init(strength, 20, random);
            }
            else
            {
                pGen.init(strength, 20, new SecureRandom());
            }

            DSAParameters p = pGen.generateParameters();

            AlgorithmParameters params;

            try
            {
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    public TestResult perform()
    {
        BigInteger              r = new BigInteger("68076202252361894315274692543577577550894681403");
        BigInteger              s = new BigInteger("1089214853334067536215539335472893651470583479365");
        DSAParametersGenerator  pGen = new DSAParametersGenerator();

        pGen.init(512, 80, random);

        DSAParameters           params = pGen.generateParameters();
        DSAValidationParameters pValid = params.getValidationParameters();

        if (pValid.getCounter() != 105)
        {
            return new SimpleTestResult(false, getName() + ": Counter wrong");
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  private byte[] g;

  public void init(int key_size) throws Exception{
    SecureRandom sr = new SecureRandom();

    DSAParametersGenerator dsapgen=new DSAParametersGenerator();
    dsapgen.init(key_size, 80, sr);
    DSAParameters dsap=dsapgen.generateParameters();
    DSAKeyGenerationParameters DSAKeyGenPara =
      new DSAKeyGenerationParameters(sr, dsap);
    DSAKeyPairGenerator kpgen=new DSAKeyPairGenerator();
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        public KeyPair generateKeyPair()
        {
            if (!initialised)
            {
                DSAParametersGenerator   pGen = new DSAParametersGenerator();

                pGen.init(strength, certainty, random);
                param = new DSAKeyGenerationParameters(random, pGen.generateParameters());
                engine.init(param);
                initialised = true;
            }

            AsymmetricCipherKeyPair   pair = engine.generateKeyPair();
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            throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for DSA parameter generation.");
        }

        protected AlgorithmParameters engineGenerateParameters()
        {
            DSAParametersGenerator pGen = new DSAParametersGenerator();

            if (random != null)
            {
                pGen.init(strength, 20, random);
            }
            else
            {
                pGen.init(strength, 20, new SecureRandom());
            }

            DSAParameters p = pGen.generateParameters();

            AlgorithmParameters params;

            try
            {
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        public KeyPair generateKeyPair()
        {
            if (!initialised)
            {
                DSAParametersGenerator   pGen = new DSAParametersGenerator();

                pGen.init(strength, certainty, random);
                param = new DSAKeyGenerationParameters(random, pGen.generateParameters());
                engine.init(param);
                initialised = true;
            }

            AsymmetricCipherKeyPair   pair = engine.generateKeyPair();
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Related Classes of org.bouncycastle.crypto.generators.DSAParametersGenerator

  • com.jcraft.jsch.bc.KeyPairGenDSA
  • org.bouncycastle.crypto.Digest
  • org.bouncycastle.crypto.digests.SHA1Digest
  • org.bouncycastle.crypto.params.DSAParameters
  • org.bouncycastle.crypto.params.DSAValidationParameters
  • org.bouncycastle.crypto.test.DSATest
  • org.bouncycastle.jcajce.provider.asymmetric.dsa.AlgorithmParameterGeneratorSpi
  • org.bouncycastle.jcajce.provider.asymmetric.dsa.KeyPairGeneratorSpi
  • org.bouncycastle.jce.provider.JDKAlgorithmParameterGenerator$DSA
  • org.bouncycastle.jce.provider.JDKKeyPairGenerator$DSA
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