Package org.activecomponents.udp.symciphers

Class NullCipher

  • All Implemented Interfaces:
    ISymCipher
    public class NullCipher
extends java.lang.Object
implements ISymCipher
    Implements NOP cipher, insecure since it is emitting plaintext.

    • Constructor Summary

      Constructors 
      Constructor Description
      NullCipher​(byte[] key, Nonce nonce)
      Creates the null cipher.

    • Method Summary

      All 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.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • NullCipher

        public NullCipher​(byte[] key,
                  Nonce nonce)
        Creates the null cipher.
        Parameters:
        key - Key, ignored.
        nonce - Nonce, ignored.

    • 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.