Exemplo n.º 1
0
        // --------------------------------------------------------------------------------
        // Private definition of the hash operation used by this class.  It is:
        //
        //    SHA1( message-text + random-salt + static-salt )
        //
        // NOTE: We convert the inputted byte arrays into strings for code simplicity.
        //       (Probably slower than assembling a byte buffer with byte array copies.)
        // --------------------------------------------------------------------------------
        private static byte[] _hash3(byte[] text, byte[] saltR, byte[] saltS, Krypto.HashAlgoID algo)
        {
            switch (algo) {
             case Krypto.HashAlgoID.SHA1:
            return Krypto.hash_sha1(ArrayOp.Append<byte>(text, saltR, saltS));

             case Krypto.HashAlgoID.PBKDF2:
            return Krypto.PBKDF2( text, ArrayOp.Append<byte>(saltR, saltS), 2112, 32);

             default:
            throw new System.ArgumentException( "_hash3: invalid HashAlgoID", String.Format( "{0}",algo ));
             }
        }
Exemplo n.º 2
0
        // --------------------------------------------------------------------------------
        // Creates the hash and returns
        // NOTE: Why didn't I made this a constructor instead of a static function?
        // --------------------------------------------------------------------------------
        public static HashStore Create(byte[] text, byte[] saltStatic, Krypto.HashAlgoID algo)
        {
            // Create a new random salt for every hash store instance.
             byte[] saltRandom = Krypto.RandomBytes(16);

             // Hash a string made from the random salt, static salt, and text.
             byte[] hash = _hash3(text, saltRandom, saltStatic, algo);

             // Return a key store containing both the hash and the random salt.
             return new HashStore(hash, saltRandom, algo);
        }
Exemplo n.º 3
0
 public static HashStore Create(string text, byte[] saltStatic, Krypto.HashAlgoID algo)
 {
     return Create(Encoding.UTF8.GetBytes(text), saltStatic, algo);
 }
Exemplo n.º 4
0
 // private constructor for packing pieces parts together.
 private HashStore(byte[] hash, byte[] salt, Krypto.HashAlgoID algo)
 {
     this.hash = hash;
      this.salt = salt;
      this.algo = algo;
 }