/// <summary> /// /// </summary> /// <param name="password"></param> /// <param name="userPassport"></param> /// <returns></returns> string IPassportSecurityStrategy.HashPassword(string password, UserPassport userPassport) { password.AssertNotNull("password"); userPassport.AssertNotNull("userPassport"); userPassport.UserSecurity.AssertNotNull("userPassport.UserSecurity"); var formatTimes = int.MaxValue; if (string.IsNullOrEmpty(userPassport.UserSecurity.HashAlgorithm)) { formatTimes = GetFormatTimes(password, null); userPassport.UserSecurity.HashAlgorithm = string.Concat(AlgorithmName, GetFormatTimes(password, null)); userPassport.UserSecurity.PasswordSalt = GenerateSalt(formatTimes); } else { formatTimes = GetFormatTimes(password, userPassport.UserSecurity.HashAlgorithm); } password = FormatPassword(formatTimes, password, userPassport); return(BCrypt.HashPassword(password, formatTimes)); }
/// <summary>Hash a password using the OpenBSD bcrypt scheme.</summary> /// <exception cref="ArgumentException">Thrown when one or more arguments have unsupported or /// illegal values.</exception> /// <param name="input">The password to hash.</param> /// <param name="salt"> the salt to hash with (perhaps generated using BCrypt.gensalt).</param> /// <returns>The hashed password</returns> public static string HashPassword(string input, string salt) { if (input == null) { throw new ArgumentNullException("input"); } if (string.IsNullOrEmpty(salt)) { throw new ArgumentException("Invalid salt", "salt"); } // Determinthe starting offset and validate the salt int startingOffset; char minor = (char)0; if (salt[0] != '$' || salt[1] != '2') { throw new SaltParseException("Invalid salt version"); } if (salt[2] == '$') { startingOffset = 3; } else { minor = salt[2]; if (minor != 'a' || salt[3] != '$') { throw new SaltParseException("Invalid salt revision"); } startingOffset = 4; } // Extract number of rounds if (salt[startingOffset + 2] > '$') { throw new SaltParseException("Missing salt rounds"); } // Extract details from salt int logRounds = Convert.ToInt32(salt.Substring(startingOffset, 2)); string extractedSalt = salt.Substring(startingOffset + 3, 22); byte[] inputBytes = Encoding.UTF8.GetBytes((input + (minor >= 'a' ? "\0" : ""))); byte[] saltBytes = DecodeBase64(extractedSalt, BCRYPT_SALT_LEN); BCrypt bCrypt = new BCrypt(); byte[] hashed = bCrypt.CryptRaw(inputBytes, saltBytes, ModuleEnvironment.BCryptFactor); // Generate result string StringBuilder result = new StringBuilder(); result.Append("$2"); if (minor >= 'a') { result.Append(minor); } result.AppendFormat("${0:00}$", logRounds); result.Append(EncodeBase64(saltBytes, saltBytes.Length)); result.Append(EncodeBase64(hashed, (_BfCryptCiphertext.Length * 4) - 1)); return(result.ToString()); }