Package tools.elgamal

Examples of tools.elgamal.ElgamalCipher

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    }
    Object key = ChatterContext.get(getCk().getB(),
        PublicKeyRequest.PUBLIC_KEY);
    ChatterContext.put(getCk().getB(), SHARED_KEY, plainKey);
    try {
      Cipher elgamal = new ElgamalCipher();
      elgamal.init(Cipher.ENCRYPT_MODE, key);
      elgamal.update(plainKey);
      this.encryptedKey = elgamal.doFinal();
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
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  public Message respond() {
    // Extract shared key from the encrypted message;
    PrivateKey key = ChatterContext.get(getCk().getA(),
        PublicKeyRequest.PRIVATE_KEY);
    try {
      Cipher elgamal = new ElgamalCipher();
      elgamal.init(Cipher.DECRYPT_MODE, key);
      elgamal.update(encryptedKey);
      byte[] sharedKey = elgamal.doFinal();
      ChatterContext.put(getCk().getA(), SHARED_KEY, sharedKey);
      return new ExchSharedKeyResponse(getTo(), getFrom());
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
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Related Classes of tools.elgamal.ElgamalCipher

  • ass3.program.core.message.ExchSharedKeyRequest
  • java.util.Random
  • java.io.ByteArrayOutputStream
  • java.io.ByteArrayInputStream
  • java.nio.ByteBuffer
  • java.math.BigInteger
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