Examples of DHPublicKey

javax.crypto.interfaces.DHPublicKey
The interface for a public key in the Diffie-Hellman key exchange protocol.
org.bouncycastle.asn1.x9.DHPublicKey

Examples of javax.crypto.interfaces.DHPublicKey

            
          key_agreement = KeyAgreement.getInstance("DH");
          
          key_agreement.init(key_pair.getPrivate());
         
          DHPublicKey  dh_public_key = (DHPublicKey)key_pair.getPublic();
          
          BigInteger  dh_y = dh_public_key.getY();
          
          dh_public_key_bytes = bigIntegerToBytes( dh_y, DH_SIZE_BYTES );
          
    }catch( Throwable e ){

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Examples of javax.crypto.interfaces.DHPublicKey


        String publicKeyBase64 = diffieHellmanSession.getPublicKey();


        assertNotNull(publicKeyBase64);


        DHPublicKey publicKey = diffieHellmanSession.stringToPublicKey(publicKeyBase64);


        assertNotNull(publicKey);
        assertEquals(publicKeyBase64, DiffieHellmanSession.publicKeyToString(publicKey));
    }

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Examples of javax.crypto.interfaces.DHPublicKey


        DiffieHellmanSession diffieHellmanSession = DiffieHellmanSession.create(AssociationSessionType.DH_SHA1, dhParameterSpec);


        String dhPublicKeyBase64 = diffieHellmanSession.getPublicKey();


        DHPublicKey dhPublicKey = diffieHellmanSession.stringToPublicKey(dhPublicKeyBase64);


        BigInteger two = new BigInteger("2");
        BigInteger y = dhPublicKey.getY();
        BigInteger p = dhParameterSpec.getP();


        assertTrue(y.compareTo(two) != -1);
        assertTrue(y.compareTo(p) == -1);
    }

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Examples of javax.crypto.interfaces.DHPublicKey

   * 
   * @param keyPair
   * @return public key
   */
  protected static byte[] getPublicKey(KeyPair keyPair) {
     DHPublicKey incomingPublicKey = (DHPublicKey) keyPair.getPublic();
     BigInteger  dhY = incomingPublicKey.getY();
     byte[] result = dhY.toByteArray();
     byte[] temp = new byte[KEY_LENGTH];
     if (result.length < KEY_LENGTH) {
       System.arraycopy(result, 0, temp, KEY_LENGTH - result.length, result.length);
       result = temp;

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Examples of javax.crypto.interfaces.DHPublicKey

        // public key encoding test
        //
        byte[]              pubEnc = aKeyPair.getPublic().getEncoded();
        KeyFactory          keyFac = KeyFactory.getInstance(algName, "BC");
        X509EncodedKeySpec  pubX509 = new X509EncodedKeySpec(pubEnc);
        DHPublicKey         pubKey = (DHPublicKey)keyFac.generatePublic(pubX509);
        DHParameterSpec     spec = pubKey.getParams();


        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit public key encoding/decoding test failed on parameters");
        }


        if (!((DHPublicKey)aKeyPair.getPublic()).getY().equals(pubKey.getY()))
        {
            fail(size + " bit public key encoding/decoding test failed on y value");
        }


        //
        // public key serialisation test
        //
        pubKey = (DHPublicKey)serializeDeserialize(aKeyPair.getPublic());
        spec = pubKey.getParams();


        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit public key serialisation test failed on parameters");
        }


        if (!((DHPublicKey)aKeyPair.getPublic()).getY().equals(pubKey.getY()))
        {
            fail(size + " bit public key serialisation test failed on y value");
        }


        if (!aKeyPair.getPublic().equals(pubKey))
        {
            fail("equals test failed");
        }


        if (aKeyPair.getPublic().hashCode() != pubKey.hashCode())
        {
            fail("hashCode test failed");
        }


        //

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Examples of javax.crypto.interfaces.DHPublicKey

        // public key encoding test
        //
        byte[]              pubEnc = aKeyPair.getPublic().getEncoded();
        KeyFactory          keyFac = KeyFactory.getInstance(algName, "BC");
        X509EncodedKeySpec  pubX509 = new X509EncodedKeySpec(pubEnc);
        DHPublicKey         pubKey = (DHPublicKey)keyFac.generatePublic(pubX509);
        DHParameterSpec     spec = pubKey.getParams();


        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit public key encoding/decoding test failed on parameters");
        }


        if (!((DHPublicKey)aKeyPair.getPublic()).getY().equals(pubKey.getY()))
        {
            fail(size + " bit public key encoding/decoding test failed on y value");
        }


        //
        // public key serialisation test
        //
        ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
        ObjectOutputStream      oOut = new ObjectOutputStream(bOut);


        oOut.writeObject(aKeyPair.getPublic());


        ByteArrayInputStream   bIn = new ByteArrayInputStream(bOut.toByteArray());
        ObjectInputStream      oIn = new ObjectInputStream(bIn);


        pubKey = (DHPublicKey)oIn.readObject();
        spec = pubKey.getParams();


        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit public key serialisation test failed on parameters");
        }


        if (!((DHPublicKey)aKeyPair.getPublic()).getY().equals(pubKey.getY()))
        {
            fail(size + " bit public key serialisation test failed on y value");
        }


        //

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Examples of javax.crypto.interfaces.DHPublicKey

  
        Cipher        c1 = Cipher.getInstance(cipher, "BC");
        Cipher        c2 = Cipher.getInstance(cipher, "BC");
        // Generate static key pair
        KeyPair       keyPair = g.generateKeyPair();
        DHPublicKey   pub = (DHPublicKey)keyPair.getPublic();
        DHPrivateKey  priv = (DHPrivateKey)keyPair.getPrivate();
       


        // Testing with null parameters and DHAES mode off
        c1.init(Cipher.ENCRYPT_MODE, pub, new SecureRandom());

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Examples of javax.crypto.interfaces.DHPublicKey

        if (!(o instanceof DHPublicKey))
        {
            return false;
        }


        DHPublicKey other = (DHPublicKey)o;


        return this.getY().equals(other.getY())
            && this.getParams().getG().equals(other.getParams().getG())
            && this.getParams().getP().equals(other.getParams().getP())
            && this.getParams().getL() == other.getParams().getL();
    }

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Examples of javax.crypto.interfaces.DHPublicKey


            return new DHPrivateKeySpec(k.getX(), k.getParams().getP(), k.getParams().getG());
        }
        else if (spec.isAssignableFrom(DHPublicKeySpec.class) && key instanceof DHPublicKey)
        {
            DHPublicKey k = (DHPublicKey)key;


            return new DHPublicKeySpec(k.getY(), k.getParams().getP(), k.getParams().getG());
        }


        return super.engineGetKeySpec(key, spec);
    }

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Examples of javax.crypto.interfaces.DHPublicKey

            return new ElGamalPublicKeyParameters(k.getY(),
                new ElGamalParameters(k.getParameters().getP(), k.getParameters().getG()));
        }
        else if (key instanceof DHPublicKey)
        {
            DHPublicKey    k = (DHPublicKey)key;


            return new ElGamalPublicKeyParameters(k.getY(),
                new ElGamalParameters(k.getParams().getP(), k.getParams().getG()));
        }


        throw new InvalidKeyException("can't identify public key for El Gamal.");
    }

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