asp.net密碼加密服務(wù)

下載類庫 Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.dll
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Microsoft.Practices.EnterpriseLibrary.Security.dll

Microsoft.Practices.EnterpriseLibrary.Common

2. web.config 配置

3.添加引用類庫

4.類方法

   /// <summary>
    /// 哈希加密算法枚舉
    /// </summary>
    public enum EnumHashProvider
    {
        /// <summary>
        /// MD5
        /// </summary>
        MD5CryptoServiceProvider = 1,
        /// <summary>
        /// RIPEMD160Managed
        /// </summary>
        RIPEMD160Managed,
        /// <summary>
        /// SHA1
        /// </summary>
        SHA1CryptoServiceProvider,
        /// <summary>
        /// SHA1Managed
        /// </summary>
        SHA1Managed,
        /// <summary>
        /// SHA256Managed
        /// </summary>
        SHA256Managed,
        /// <summary>
        /// SHA384Managed
        /// </summary>
        SHA384Managed,
        /// <summary>
        /// SHA512Managed
        /// </summary>
        SHA512Managed
    }

    /// <summary>
    /// 加密服務(wù)工具類
    /// </summary>
    public class CryptographyUtil
    {
        /// <summary>
        /// 根據(jù)隨機(jī)抽取的加密算法和隨機(jī)產(chǎn)生的散列字符串對源字符串進(jìn)行加密
        /// </summary>
        /// <param name="plainText">要加密的字符串</param>
        /// <param name="saltText">散列字符串</param>
        /// <param name="hashProvider">哈希加密算法提供器</param>
        /// <returns>加密后的字符串</returns>
        public static string GetEncryptedHashText(string plainText, out string saltText, out int hashProvider)
        {
            Random radom = new Random();
            int hashProviderType = radom.Next(1, 8);
            hashProvider = hashProviderType;
            saltText = CreateSaltText();
            plainText += saltText;
            string encryptedText = Cryptographer.CreateHash(((EnumHashProvider)hashProvider).ToString(), plainText);
            return encryptedText;
        }

        /// <summary>
        /// 比較某一字符串是否是某一加密字符串的源字符串
        /// </summary>
        /// <param name="plainText">源字符串</param>
        /// <param name="encryptedText">加密后的字符串</param>
        /// <param name="saltText">加密用的散列值</param>
        /// <param name="hashProviderType">哈希加密算法提供器</param>
        /// <returns>true=源字符串和加密后的字符串一樣;false=源字符串和加密后的字符串不一樣</returns>
        public static bool CompareHashText(string plainText, string encryptedText, string saltText, int hashProviderType)
        {
            EnumHashProvider hashProvider = new EnumHashProvider();
            try
            {
                hashProvider = (EnumHashProvider)hashProviderType;
            }
            catch
            {
                return false;
            }
            bool matched = Cryptographer.CompareHash(hashProvider.ToString(), plainText + saltText, encryptedText);

            return matched;
        }

        /// <summary>
        /// 產(chǎn)生一個(gè)散列值
        /// </summary>
        /// <returns></returns>
        private static string CreateSaltText()
        {
            byte[] bytSalt = new byte[32];
            RNGCryptoServiceProvider rng;

            rng = new RNGCryptoServiceProvider();

            rng.GetBytes(bytSalt);

            return Convert.ToBase64String(bytSalt);
        }
    }

/// <summary>
        /// 用戶名登錄
        /// </summary>
        /// <param name="userloginname">用戶名</param>
        /// <param name="userLogPassword">用戶密碼</param>
        /// <returns>用戶信息實(shí)體</returns>
        public tb_User UserLogin(string userLoginname, string userLogPassword)
        {
            tb_User dbclass = this.repository.UserLogin(userLoginname);
            if (dbclass == null)
            {
                return null;
            }
            if (!CryptographyUtil.CompareHashText(userLogPassword, dbclass.User_Password, dbclass.User_PasswordSalt, dbclass.User_PasswordFormat.Value))
            {
                return null;
            }
            return dbclass;
        }

   string user_Password;
            string user_PasswordSalt;
            int user_PasswordFormat;
            //密碼加密
            user_Password = CryptographyUtil.GetEncryptedHashText(password, out user_PasswordSalt, out user_PasswordFormat);

            item.User_Password = user_Password;
            item.User_PasswordFormat = user_PasswordFormat;
            item.User_PasswordSalt = user_PasswordSalt;

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asp.net密碼加密服務(wù)