Examples of DHPublicKeyParameters

Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        p = dhParams.getP();
        x = helper.calculatePrivate(p, param.getRandom(), dhParams.getL());
        y = helper.calculatePublic(p, dhParams.getG(), x);

        return new AsymmetricCipherKeyPair(
                new DHPublicKeyParameters(y, dhParams),
                new DHPrivateKeyParameters(x, dhParams));
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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                engine.init(param);
                initialised = true;
            }

            AsymmetricCipherKeyPair   pair = engine.generateKeyPair();
            DHPublicKeyParameters     pub = (DHPublicKeyParameters)pair.getPublic();
            DHPrivateKeyParameters priv = (DHPrivateKeyParameters)pair.getPrivate();

            return new KeyPair(new JCEDHPublicKey(pub),
                               new JCEDHPrivateKey(priv));
        }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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     * message in the agreement sequence.
     */
    public BigInteger calculateAgreement(
        CipherParameters   pubKey)
    {
        DHPublicKeyParameters   pub = (DHPublicKeyParameters)pubKey;

        if (!pub.getParameters().equals(dhParams))
        {
            throw new IllegalArgumentException("Diffie-Hellman public key has wrong parameters.");
        }

        return pub.getY().modPow(key.getX(), dhParams.getP());
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        //
        // generate first pair
        //
        AsymmetricCipherKeyPair     pair = kpGen.generateKeyPair();

        DHPublicKeyParameters       pu1 = (DHPublicKeyParameters)pair.getPublic();
        DHPrivateKeyParameters      pv1 = (DHPrivateKeyParameters)pair.getPrivate();
        //
        // generate second pair
        //
        pair = kpGen.generateKeyPair();

        DHPublicKeyParameters       pu2 = (DHPublicKeyParameters)pair.getPublic();
        DHPrivateKeyParameters      pv2 = (DHPrivateKeyParameters)pair.getPrivate();

        //
        // two way
        //
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        //
        // generate first pair
        //
        AsymmetricCipherKeyPair     pair = kpGen.generateKeyPair();

        DHPublicKeyParameters       pu1 = (DHPublicKeyParameters)pair.getPublic();
        DHPrivateKeyParameters      pv1 = (DHPrivateKeyParameters)pair.getPrivate();
        //
        // generate second pair
        //
        pair = kpGen.generateKeyPair();

        DHPublicKeyParameters       pu2 = (DHPublicKeyParameters)pair.getPublic();
        DHPrivateKeyParameters      pv2 = (DHPrivateKeyParameters)pair.getPrivate();

        //
        // two way
        //
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        //
        // generate first pair
        //
        AsymmetricCipherKeyPair     pair = kpGen.generateKeyPair();

        DHPublicKeyParameters       pu1 = (DHPublicKeyParameters)pair.getPublic();
        DHPrivateKeyParameters      pv1 = (DHPrivateKeyParameters)pair.getPrivate();
        //
        // generate second pair
        //
        params = new DHKeyGenerationParameters(new SecureRandom(), pu1.getParameters());

        kpGen.init(params);

        pair = kpGen.generateKeyPair();

        DHPublicKeyParameters       pu2 = (DHPublicKeyParameters)pair.getPublic();
        DHPrivateKeyParameters      pv2 = (DHPrivateKeyParameters)pair.getPrivate();

        //
        // two way
        //
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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              getParameter()
              );
      DHKeyPairGenerator kpgen=new DHKeyPairGenerator();
      kpgen.init(params);
      AsymmetricCipherKeyPair myKpair=kpgen.generateKeyPair();
      DHPublicKeyParameters pu=(DHPublicKeyParameters)myKpair.getPublic();
      DHPrivateKeyParameters pv=(DHPrivateKeyParameters)myKpair.getPrivate();

      myKeyAgree.init(pv);
      e=pu.getY();
      e_array=e.toByteArray();
    }
    return e_array;
  }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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    }
    return e_array;
  }
  public byte[] getK() throws Exception{
    if(K==null){
      DHPublicKeyParameters yourPubKey=
  new DHPublicKeyParameters(f,
          getParameter()
          );
      K=myKeyAgree.calculateAgreement(yourPubKey);
      K_array=K.toByteArray();
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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         // Calculate the shared secret
         DHBasicAgreement dhAgree = new DHBasicAgreement();
         dhAgree.init(dhPair.getPrivate());

         BigInteger agreement = dhAgree.calculateAgreement(new DHPublicKeyParameters(Ys, dhParams));

         this.pms = BigIntegers.asUnsignedByteArray(agreement);
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        // calculate the public key.
        //
        y = g.modPow(x, p);

        return new AsymmetricCipherKeyPair(
                new DHPublicKeyParameters(y, dhParams),
                new DHPrivateKeyParameters(x, dhParams));
    }
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