Exemple #1
0
        private byte[] encodeString(byte[] str)
        {
            if (str == null || str.Length == 0)
            {
                return(XofUtilities.LeftEncode(0));
            }

            return(Arrays.Concatenate(XofUtilities.LeftEncode(str.Length * 8L), str));
        }
Exemple #2
0
 /// <summary>
 /// Base constructor
 /// </summary>
 /// <param name="bitLength">bit length of the underlying SHAKE function, 128 or 256.</param>
 /// <param name="N">the function name string, note this is reserved for use by NIST. Avoid using it if not required.</param>
 /// <param name="S">the customization string - available for local use.</param>
 public CShakeDigest(int bitLength, byte[] N, byte[] S) : base(bitLength)
 {
     if ((N == null || N.Length == 0) && (S == null || S.Length == 0))
     {
         diff = null;
     }
     else
     {
         diff = Arrays.ConcatenateAll(XofUtilities.LeftEncode(rate / 8), encodeString(N), encodeString(S));
         DiffPadAndAbsorb();
     }
 }