Granados.Algorithms.Blowfish.InitializeState C# (CSharp) Méthode

        internal void InitializeState()
        {
            Array.Copy(blowfish_pbox, 0, P, 0, 18);
            Array.Copy(blowfish_sbox, 0, S0, 0, 256);
            Array.Copy(blowfish_sbox, 256, S1, 0, 256);
            Array.Copy(blowfish_sbox, 512, S2, 0, 256);
            Array.Copy(blowfish_sbox, 768, S3, 0, 256);
        }

        /// <summary>
        /// bcrypt_hash
        /// </summary>
        /// <param name="blowfish">blowfish object to use</param>
        /// <param name="sha2pass">SHA512 of password</param>
        /// <param name="sha2salt">SHA512 of salt</param>
        /// <returns></returns>
        private byte[] BcryptHash(Blowfish blowfish, byte[] sha2pass, byte[] sha2salt)
        {
            // this code is based on OpenBSD's bcrypt_pbkdf.c
            const int BLOCKSIZE = 8;

            // key expansion
            blowfish.InitializeState();
            blowfish.ExpandState(sha2pass, sha2salt);
            for (int i = 0; i < 64; ++i) {
                blowfish.ExpandState(sha2salt);
                blowfish.ExpandState(sha2pass);
            }

            // encryption
            byte[] cdata = (byte[])_bcryptCipherText.Clone();
            for (int i = 0; i < 64; ++i) {
                for (int j = 0; j < 32; j += BLOCKSIZE) {
                    blowfish.BlockEncrypt(cdata, j, cdata, j);
                }
            }

            // copy out
            for (int i = 0; i < 32; i += 4) {
                byte b0 = cdata[i + 0];
                byte b1 = cdata[i + 1];
                byte b2 = cdata[i + 2];
                byte b3 = cdata[i + 3];
                cdata[i + 3] = b0;
                cdata[i + 2] = b1;
                cdata[i + 1] = b2;
                cdata[i + 0] = b3;
            }

            return cdata;
        }