Constructor Detail

• ElGamalEngine

  public ElGamalEngine(I2PAppContext context)

  The ElGamal engine should only be constructed and accessed through the application context. This constructor should only be used by the appropriate application context itself. Starts the YK precalc thread if context is RouterContext or Android.

Method Detail

• decrypt

  public byte[] decrypt(byte[] encrypted,
                        PrivateKey privateKey)

  Decrypt the data

  Parameters:

  encrypted - encrypted data, must be exactly 514 bytes Contains the two-part encrypted data starting at bytes 0 and 257. If the encrypted parts are smaller than 257 bytes, they must be padded with leading zeros.

  privateKey - private key to decrypt with

  Returns:

  unencrypted data or null on failure

• encrypt

  public byte[] encrypt(byte[] data,
                        PublicKey publicKey)

  encrypt the data to the public key

  Parameters:

  data - data to encrypt, must be 222 bytes or less

  publicKey - public key encrypt to As the encrypted data may contain a substantial number of zeros if the cleartext is smaller than 222 bytes, it is recommended that the caller pad the cleartext to 222 bytes with random data.

  Returns:

  encrypted data, will be exactly 514 bytes long Contains the two-part encrypted data starting at bytes 0 and 257. If the encrypted parts are smaller than 257 bytes, they will be padded with leading zeros. The parts appear to always be 256 bytes or less, in other words, bytes 0 and 257 are always zero.

• restart

  public void restart()

  This is now a noop. Cannot be restarted.

• shutdown

  public void shutdown()

  Note that this stops the precalc thread and it cannot be restarted.