Package java.security.spec

Examples of java.security.spec.RSAPublicKeySpec

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        throws Exception
    {
        //
        // a sample key pair.
        //
        RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
            new BigInteger("11", 16));
   
        RSAPrivateCrtKeySpec privKeySpec = new RSAPrivateCrtKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
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    }

    private void createPSSCert(String algorithm)
        throws Exception
    {
        RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(
            new BigInteger("a56e4a0e701017589a5187dc7ea841d156f2ec0e36ad52a44dfeb1e61f7ad991d8c51056ffedb162b4c0f283a12a88a394dff526ab7291cbb307ceabfce0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921cb23c270a70e2598e6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef22e1e1f20d0ce8cffb2249bd9a2137",16),
            new BigInteger("010001",16));

        RSAPrivateCrtKeySpec privKeySpec = new RSAPrivateCrtKeySpec(
            new BigInteger("a56e4a0e701017589a5187dc7ea841d156f2ec0e36ad52a44dfeb1e61f7ad991d8c51056ffedb162b4c0f283a12a88a394dff526ab7291cbb307ceabfce0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921cb23c270a70e2598e6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef22e1e1f20d0ce8cffb2249bd9a2137",16),
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        X509Certificate             iCert = (X509Certificate)fact.generateCertificate(new ByteArrayInputStream(signCert));
       
        //
        // a sample key pair.
        //
        RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
            new BigInteger("11", 16));

        //
        // set up the keys
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        // base generator test
       
        //
        // a sample key pair.
        //
        RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
            new BigInteger("11", 16));

        RSAPrivateCrtKeySpec privKeySpec = RSA_PRIVATE_KEY_SPEC;
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            String keyAlg = getString();
            if (KeyPairProvider.SSH_RSA.equals(keyAlg)) {
                BigInteger e = getMPInt();
                BigInteger n = getMPInt();
                KeyFactory keyFactory = SecurityUtils.getKeyFactory("RSA");
                key = keyFactory.generatePublic(new RSAPublicKeySpec(n, e));
            } else if (KeyPairProvider.SSH_DSS.equals(keyAlg)) {
                BigInteger p = getMPInt();
                BigInteger q = getMPInt();
                BigInteger g = getMPInt();
                BigInteger y = getMPInt();
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                BigInteger q = getMPInt();
                BigInteger p = getMPInt();
                BigInteger dP = d.remainder(p.subtract(BigInteger.valueOf(1)));
                BigInteger dQ = d.remainder(q.subtract(BigInteger.valueOf(1)));
                KeyFactory keyFactory = SecurityUtils.getKeyFactory("RSA");
                pub = keyFactory.generatePublic(new RSAPublicKeySpec(n, e));
                prv = keyFactory.generatePrivate(new RSAPrivateCrtKeySpec(n, e, d, p, q, dP, dQ, qInv));
            } else if (KeyPairProvider.SSH_DSS.equals(keyAlg)) {
                BigInteger p = getMPInt();
                BigInteger q = getMPInt();
                BigInteger g = getMPInt();
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     * This method creates a java.security.PublicKey object based on the public key information given in SubjectPublicKeyInfo
     * @param pubKeyInfo SubjectPublicKeyInfo instance containing the public key information.
     */
    public static PublicKey getPublicKeyObject(SubjectPublicKeyInfo pubKeyInfo) throws Exception{
        RSAPublicKeyStructure pubkeyStruct = new RSAPublicKeyStructure((ASN1Sequence)pubKeyInfo.getPublicKey());
        RSAPublicKeySpec pubkeySpec = new RSAPublicKeySpec(pubkeyStruct.getModulus(), pubkeyStruct.getPublicExponent());
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PublicKey pubKey = keyFactory.generatePublic(pubkeySpec);
        return pubKey;
    }
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     */
    public static PublicKey getRSAKey(RSAKeyValue keyDescriptor) throws KeyException {
        BigInteger modulus = keyDescriptor.getModulus().getValueBigInt();
        BigInteger exponent = keyDescriptor.getExponent().getValueBigInt();

        RSAPublicKeySpec keySpec = new RSAPublicKeySpec(modulus, exponent);
        return buildKey(keySpec, "RSA");
    }
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            } catch (GeneralSecurityException e) {
                throw new KeyException("Unable to derive public key from DSA private key", e);
            }
        } else if (key instanceof RSAPrivateCrtKey) {
            RSAPrivateCrtKey rsaKey = (RSAPrivateCrtKey) key;
            RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(rsaKey.getModulus(), rsaKey.getPublicExponent());

            try {
                factory = KeyFactory.getInstance("RSA");
                return factory.generatePublic(pubKeySpec);
            } catch (GeneralSecurityException e) {
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       }
       else if (spec.isAssignableFrom(RSAPublicKeySpec.class) && key instanceof RSAPublicKey)
       {
            RSAPublicKey    k = (RSAPublicKey)key;

            return new RSAPublicKeySpec(k.getModulus(), k.getPublicExponent());
       }
       else if (spec.isAssignableFrom(RSAPrivateKeySpec.class) && key instanceof RSAPrivateKey)
       {
            RSAPrivateKey    k = (RSAPrivateKey)key;
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