Package org.activecomponents.udp.symciphers

Class GcmAesCipher

  • All Implemented Interfaces:
    ISymCipher
    public class GcmAesCipher
extends java.lang.Object
implements ISymCipher
    Class representing AES in GCM mode.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected org.bouncycastle.crypto.modes.GCMBlockCipher gcm
      GCM-mode cipher.
      protected byte[] key
      The key.
      protected Nonce nonce
      The nonce used.

    • Constructor Summary

      Constructors 
      Constructor Description
      GcmAesCipher​(byte[] key, Nonce nonce)
      Creates the cipher with the given key.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      byte[] decrypt​(byte[] cipher)
      Decrypts a message.
      byte[] decrypt​(byte[] cipher, int offset, int len)
      Decrypts a message.
      byte[] encrypt​(byte[] plain)
      Encrypts a message.
      byte[] encrypt​(byte[] plain, int offset, int len)
      Encrypts a message.
      static void main​(java.lang.String[] args)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • gcm

        protected org.bouncycastle.crypto.modes.GCMBlockCipher gcm
        GCM-mode cipher.

      • nonce

        protected Nonce nonce
        The nonce used.

      • key

        protected byte[] key
        The key.

    • Constructor Detail

      • GcmAesCipher

        public GcmAesCipher​(byte[] key,
                    Nonce nonce)
        Creates the cipher with the given key.

    • Method Detail

      • encrypt

        public byte[] encrypt​(byte[] plain)
        Encrypts a message.
        Specified by:
        encrypt in interface ISymCipher
        Parameters:
        plain - Plain text.
        Returns:
        Cipher text.

      • encrypt

        public byte[] encrypt​(byte[] plain,
                      int offset,
                      int len)
        Encrypts a message.
        Specified by:
        encrypt in interface ISymCipher
        Parameters:
        plain - Plain text.
        offset - Offset where the plain text starts.
        len - Length of the plain text, -1 for rest of the array.
        Returns:
        Cipher text.

      • decrypt

        public byte[] decrypt​(byte[] cipher)
        Decrypts a message.
        Specified by:
        decrypt in interface ISymCipher
        Parameters:
        cipher - Cipher text.
        Returns:
        Plain text.

      • decrypt

        public byte[] decrypt​(byte[] cipher,
                      int offset,
                      int len)
        Decrypts a message.
        Specified by:
        decrypt in interface ISymCipher
        Parameters:
        cipher - Cipher text.
        offset - Offset where the cipher text starts.
        len - Length of the cipher text, -1 for rest of the array.
        Returns:
        Plain text.

      • main

        public static void main​(java.lang.String[] args)