Class DESParameters

    • Constructor Detail

      • DESParameters

        public DESParameters​(byte[] key)
    • Method Detail

      • isWeakKey

        public static boolean isWeakKey​(byte[] key,
                                        int offset)
        DES has 16 weak keys. This method will check if the given DES key material is weak or semi-weak. Key material that is too short is regarded as weak.

        See "Applied Cryptography" by Bruce Schneier for more information.

        Returns:
        true if the given DES key material is weak or semi-weak, false otherwise.
      • setOddParity

        public static void setOddParity​(byte[] bytes)
        DES Keys use the LSB as the odd parity bit. This can be used to check for corrupt keys.
        Parameters:
        bytes - the byte array to set the parity on.