Package java.security

Examples of java.security.AlgorithmParameters

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        }

        private AlgorithmParameters checkParameters(Cipher c, byte[] salt, int iCount)
            throws InvalidParameterSpecException
        {
            AlgorithmParameters param = c.getParameters();
            PBEParameterSpec spec = (PBEParameterSpec)param.getParameterSpec(PBEParameterSpec.class);

            if (!arrayEquals(salt, spec.getSalt()))
            {
                fail("" + algorithm + "failed salt test");
            }
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      + "Rwe+TERStHTkqSO7sp0lq7EEggVMcuXtarKNsxaJ+qyYv/n1t6");

    private void basicTest(String algorithm, Class algorithmParameterSpec, byte[] asn1Encoded)
        throws Exception
    {
        AlgorithmParameters alg = AlgorithmParameters.getInstance(algorithm, "BC");

        alg.init(asn1Encoded);

        try
        {
            alg.init(asn1Encoded);
            fail("encoded re-initialization not detected");
        }
        catch (IOException e)
        {
            // expected already initialized
        }

        AlgorithmParameterSpec spec = alg.getParameterSpec(algorithmParameterSpec);

        try
        {
            alg.init(spec);
            fail("spec re-initialization not detected");
        }
        catch (InvalidParameterSpecException e)
        {
            // expected already initialized
        }

        try
        {
            spec = alg.getParameterSpec(AlgorithmParameterSpec.class);
            fail("wrong spec not detected");
        }
        catch (InvalidParameterSpecException e)
        {
            // expected unknown object
        }

        try
        {
            spec = alg.getParameterSpec(null);
            fail("null spec not detected");
        }
        catch (NullPointerException e)
        {
            // expected unknown object
        }

        alg = AlgorithmParameters.getInstance(algorithm, "BC");

        alg.init(asn1Encoded, "ASN.1");

        alg = AlgorithmParameters.getInstance(algorithm, "BC");

        alg.init(asn1Encoded, null);

        alg = AlgorithmParameters.getInstance(algorithm, "BC");

        try
        {
            alg.init(asn1Encoded, "FRED");
            fail("unknown spec not detected");
        }
        catch (IOException e)
        {
            // expected already initialized
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        int         size)
        throws Exception
    {
        AlgorithmParameterGenerator a = AlgorithmParameterGenerator.getInstance("ElGamal", "BC");
        a.init(size, new SecureRandom());
        AlgorithmParameters params = a.generateParameters();

        byte[] encodeParams = params.getEncoded();

        AlgorithmParameters a2 = AlgorithmParameters.getInstance("ElGamal", "BC");
        a2.init(encodeParams);

        // a and a2 should be equivalent!
        byte[] encodeParams_2 = a2.getEncoded();

        if (!areEqual(encodeParams, encodeParams_2))
        {
            fail(this.getName() + ": encode/decode parameters failed");
        }
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    private void testParameters()
        throws Exception
    {
        AlgorithmParameterGenerator a = AlgorithmParameterGenerator.getInstance("DSA", "BC");
        a.init(512, random);
        AlgorithmParameters params = a.generateParameters();
       
        byte[] encodeParams = params.getEncoded();
       
        AlgorithmParameters a2 = AlgorithmParameters.getInstance("DSA", "BC");
        a2.init(encodeParams);
       
        // a and a2 should be equivalent!
        byte[] encodeParams_2 = a2.getEncoded();
       
        if (!areEqual(encodeParams, encodeParams_2))
        {
            fail("encode/decode parameters failed");
        }
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                pGen.init(strength, 20, new SecureRandom());
            }

            DHParameters                p = pGen.generateParameters();

            AlgorithmParameters params;

            try
            {
                params = AlgorithmParameters.getInstance("DH", "BC");
                params.init(new DHParameterSpec(p.getP(), p.getG(), l));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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                pGen.init(strength, 20, new SecureRandom());
            }

            DSAParameters p = pGen.generateParameters();

            AlgorithmParameters params;

            try
            {
                params = AlgorithmParameters.getInstance("DSA", "BC");
                params.init(new DSAParameterSpec(p.getP(), p.getQ(), p.getG()));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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                pGen.init(strength, 2, new SecureRandom());
            }
           
            GOST3410Parameters p = pGen.generateParameters();
           
            AlgorithmParameters params;
           
            try
            {
                params = AlgorithmParameters.getInstance("GOST3410", "BC");
                params.init(new GOST3410ParameterSpec(new GOST3410PublicKeyParameterSetSpec(p.getP(), p.getQ(), p.getA())));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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                random = new SecureRandom();
            }

            random.nextBytes(iv);

            AlgorithmParameters params;

            try
            {
                params = AlgorithmParameters.getInstance("AES", "BC");
                params.init(new IvParameterSpec(iv));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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                random = new SecureRandom();
            }

            random.nextBytes(iv);

            AlgorithmParameters params;

            try
            {
                params = AlgorithmParameters.getInstance("SEED", "BC");
                params.init(new IvParameterSpec(iv));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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                random = new SecureRandom();
            }

            random.nextBytes(iv);

            AlgorithmParameters params;

            try
            {
                params = AlgorithmParameters.getInstance("Noekeon", "BC");
                params.init(new IvParameterSpec(iv));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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