Package java.security

Examples of java.security.AlgorithmParameterGenerator.generateParameters()

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                {
                    throw new CMSException("parameters generation error: " + e, e);
                }
            }

            return pGen.generateParameters();
        }
        catch (NoSuchAlgorithmException e)
        {
            return null;
        }
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    private void init() throws NoSuchAlgorithmException, InvalidAlgorithmParameterException,
        InvalidParameterSpecException, InvalidKeySpecException {
        AlgorithmParameterGenerator pgen = AlgorithmParameterGenerator.getInstance("DH");
        pgen.init(512);
        AlgorithmParameters params = pgen.generateParameters();
        DHParameterSpec dhspec = (DHParameterSpec)params.getParameterSpec(DHParameterSpec.class);
        KeyPairGenerator keypairgen = KeyPairGenerator.getInstance("DH");
        keypairgen.initialize(dhspec);
        keyPair = keypairgen.generateKeyPair();
        p = dhspec.getP();
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    {

        String s = "1.2.840.113549.3.2";

        AlgorithmParameterGenerator algorithmparametergenerator = AlgorithmParameterGenerator.getInstance(s);
        AlgorithmParameters algorithmparameters = algorithmparametergenerator.generateParameters();
        ByteArrayInputStream bytearrayinputstream = new ByteArrayInputStream(algorithmparameters.getEncoded("ASN.1"));
        ASN1InputStream asn1inputstream = new ASN1InputStream(bytearrayinputstream);
        DERObject derobject = asn1inputstream.readObject();
        KeyGenerator keygenerator = KeyGenerator.getInstance(s);
        keygenerator.init(128);
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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);
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