Package javax.crypto.spec

Examples of javax.crypto.spec.DHPublicKeySpec

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    }

    public void computeK(BigInteger f)
            throws GeneralSecurityException {
        final KeyFactory keyFactory = SecurityUtils.getKeyFactory("DH");
        final PublicKey yourPubKey = keyFactory.generatePublic(new DHPublicKeySpec(f, p, g));
        agreement.doPhase(yourPubKey, true);
        K = new BigInteger(1, agreement.generateSecret());
    }
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       }
       else if (spec.isAssignableFrom(DHPublicKeySpec.class) && key instanceof DHPublicKey)
       {
           DHPublicKey k = (DHPublicKey)key;
          
           return new DHPublicKeySpec(k.getY(), k.getParams().getP(), k.getParams().getG());
       }

        throw new RuntimeException("not implemented yet " + key + " " + spec);
    }
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    protected PublicKey engineGeneratePublic(KeySpec keySpec)
        throws InvalidKeySpecException
    {
        try {
            if (keySpec instanceof DHPublicKeySpec) {
                DHPublicKeySpec dhPubKeySpec = (DHPublicKeySpec)keySpec;
                return new DHPublicKey(dhPubKeySpec.getY(),
                                       dhPubKeySpec.getP(),
                                       dhPubKeySpec.getG());

            } else if (keySpec instanceof X509EncodedKeySpec) {
                return new DHPublicKey
                    (((X509EncodedKeySpec)keySpec).getEncoded());
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            if (DHPublicKeySpec.class.isAssignableFrom(keySpec)) {
                javax.crypto.interfaces.DHPublicKey dhPubKey
                    = (javax.crypto.interfaces.DHPublicKey) key;
                params = dhPubKey.getParams();
                return new DHPublicKeySpec(dhPubKey.getY(),
                                           params.getP(),
                                           params.getG());

            } else if (X509EncodedKeySpec.class.isAssignableFrom(keySpec)) {
                return new X509EncodedKeySpec(key.getEncoded());
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                // Check if key originates from this factory
                if (key instanceof com.sun.crypto.provider.DHPublicKey) {
                    return key;
                }
                // Convert key to spec
                DHPublicKeySpec dhPubKeySpec
                    = (DHPublicKeySpec)engineGetKeySpec
                    (key, DHPublicKeySpec.class);
                // Create key from spec, and return it
                return engineGeneratePublic(dhPubKeySpec);
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