コード例 #1
0
ファイル: PBPRng.cs プロジェクト: modulexcite/CEX
        /// <summary>
        /// Creates a new PassphrasePrng from a passphrase and salt,
        /// and seeds it with the output of PKCS5
        /// </summary>
        /// 
        /// <param name="Digest">Digest engine</param>
        /// <param name="Passphrase">The passphrase</param>
        /// <param name="Salt">The salt value</param>
        /// <param name="Iterations">The number of transformation iterations performed by the digest with PKCS5 (default is 10,000)</param>
        /// <param name="DisposeEngine">Dispose of digest engine when <see cref="Dispose()"/> on this class is called (default is true)</param>
        /// 
        /// <exception cref="CryptoRandomException">Thrown if a null Digest, Passphrase or Salt are used</exception>
        public PBPRng(IDigest Digest, byte[] Passphrase, byte[] Salt, int Iterations = PKCS_ITERATIONS, bool DisposeEngine = true)
        {
            if (Digest == null)
                throw new CryptoRandomException("PBPRng:Ctor", "Digest can not be null!", new ArgumentNullException());
            if (Passphrase == null)
                throw new CryptoRandomException("PBPRng:Ctor", "Passphrase can not be null!", new ArgumentNullException());
            if (Salt == null)
                throw new CryptoRandomException("PBPRng:Ctor", "Salt can not be null!", new ArgumentNullException());

            try
            {
                _disposeEngine = DisposeEngine;
                PKCS5 pkcs = new PKCS5(Digest, Iterations, false);
                _digest = Digest;
                pkcs.Initialize(Salt, Passphrase);
                _rndData = new byte[_digest.BlockSize];
                pkcs.Generate(_rndData);
            }
            catch (Exception e)
            {
                throw new Exception(e.Message);
            }

            _position = 0;
        }
コード例 #2
0
ファイル: Pkcs5Test.cs プロジェクト: modulexcite/CEX
        private void PKCSTest(int Size, int Iterations, byte[] Salt, byte[] Key, byte[] Output)
        {
            byte[] outBytes = new byte[Size];

            using (PKCS5 gen = new PKCS5(new SHA256(), Iterations))
            {
                gen.Initialize(Salt, Key);
                gen.Generate(outBytes, 0, Size);
            }

            if (Compare.AreEqual(outBytes, Output) == false)
                throw new Exception("PKCS5: Values are not equal! Expected: " + HexConverter.ToString(Output) + " Received: " + HexConverter.ToString(outBytes));

            using (PKCS5 gen = new PKCS5(new SHA256HMAC(), Iterations))
            {
                gen.Initialize(Salt, Key);
                gen.Generate(outBytes, 0, Size);
            }

            if (Compare.AreEqual(outBytes, Output) == false)
                throw new Exception("PKCS5: Values are not equal! Expected: " + HexConverter.ToString(Output) + " Received: " + HexConverter.ToString(outBytes));
        }