Synnefo » Pithos MS Client

    public class SHA256OpenSSL : SHA256

    {

        private MessageDigestContext _context;

        public SHA256OpenSSL()

        {

            _context = new MessageDigestContext(MessageDigest.CreateByName("SHA256"));

            _context.Init();

        }

        public override void Initialize()

        {

            _context.Init();

        }

        protected override void HashCore(byte[] array, int ibStart, int cbSize)

        {

            if (array.Length == cbSize)

                _context.Update(array);

            else

            {

                var block = new byte[cbSize];

                Buffer.BlockCopy(array, ibStart, block, 0, cbSize);

                _context.Update(block);

            }

        }

        protected override byte[] HashFinal()

        {

            return _context.DigestFinal();

        }

        protected override void Dispose(bool disposing)

        {

            base.Dispose(disposing);

            if (disposing)

            {

                if (_context != null)

                    _context.Dispose();

                _context = null;

            }

        }

    }