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[ASP.net教程]【C#公共帮助类】给大家分享一些加密算法 (DES、HashCode、RSA、AES等)


AES

      高级加密标准(英语:Advanced Encryption Standard,缩写:AES),在密码学中又称Rijndael加密法,是美国联邦政府采用的一种区块加密标准。这个标准用来替代原先的DES,已经被多方分析且广为全世界所使用。AES先进加密算法是一向被认为牢不可破的加密算法,针对这项加密算法的攻击是异常复杂的,事实上想要完全破解AES花费的时间要以数十亿年计,极大的保证了数据的安全性。

这里有两个加密、解密方法: 一种是带密钥的加密;一种是动态加密,就是不需要密钥,密钥被动态生成并且保存在密文中,解密时先解密密钥,在解密密文。

using System;using System.Security.Cryptography;using System.Text;namespace Common.CryptHelper{  public class AESCrypt  {    public const string RET_ERROR = "x07x07x07x07x07";    private byte[] _IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF, 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };    private byte[] _Key = { 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };    private const string CRYPTO_KEY = "ADVANCEDENCRYPTIONSTANDARD";    private int CRYPTO_KEY_LENGTH = 32;     private AesCryptoServiceProvider m_aesCryptoServiceProvider;    private string m_message;    public string Message    {      get { return m_message; }      set { m_message = value; }    }    private bool m_containKey;    /// <summary>    /// True:密文中包含密钥    /// False:密文中不包含密钥    /// </summary>    public bool ContainKey    {      get { return m_containKey; }      set { m_containKey = value; }    }    public AESCrypt()    {      m_aesCryptoServiceProvider = new AesCryptoServiceProvider();      m_containKey = true;      m_message = string.Empty;    }    public AESCrypt(bool containKey)      : this()    {      m_containKey = containKey;    }    private string Encrypt(string s_crypto, byte[] key)    {      string s_encryped = string.Empty;      byte[] crypto, encrypted;      ICryptoTransform ct;       try      {        crypto = string2Byte(s_crypto);        m_aesCryptoServiceProvider.Key = key;        m_aesCryptoServiceProvider.IV = _IV;        ct = m_aesCryptoServiceProvider.CreateEncryptor();        encrypted = ct.TransformFinalBlock(crypto, 0, crypto.Length);        if (m_containKey)        {          s_encryped += byte2HexString(key);        }        s_encryped += byte2HexString(encrypted);        return s_encryped;      }      catch (Exception ex)      {        m_message = ex.ToString();        return RET_ERROR;      }    }        private string Decrypt(string s_encrypted, byte[] key)    {      string s_decrypted = string.Empty;      byte[] encrypted, decrypted;      ICryptoTransform ct;       try      {        encrypted = hexString2Byte(s_encrypted);        m_aesCryptoServiceProvider.Key = key;        m_aesCryptoServiceProvider.IV = _IV;        ct = m_aesCryptoServiceProvider.CreateDecryptor();        decrypted = ct.TransformFinalBlock(encrypted, 0, encrypted.Length);        s_decrypted += byte2String(decrypted);        return s_decrypted;      }      catch (Exception ex)      {        m_message = ex.ToString();        m_message = "Decrypt fail.";        return RET_ERROR;      }    }    #region 指定密钥对明文进行AES加密、解密    /// <summary>    /// 指定密钥对明文进行AES加密    /// </summary>    /// <param name="s_crypto">明文</param>    /// <param name="s_key">加密密钥</param>    /// <returns></returns>    public string Encrypt(string s_crypto, string s_key)    {      byte[] key = new byte[CRYPTO_KEY_LENGTH];      byte[] temp = string2Byte(s_key);      if (temp.Length > key.Length)      {        m_message = "Key too long,need less than 32 Bytes key.";        return RET_ERROR;      }      key = string2Byte(s_key.PadRight(key.Length));      return Encrypt(s_crypto, key);    }    /// <summary>    /// 指定密钥,并对密文进行解密    /// </summary>    /// <param name="s_encrypted">密文</param>    /// <param name="s_key">密钥</param>    /// <returns></returns>    public string Decrypt(string s_encrypted, string s_key)    {      byte[] key = new byte[CRYPTO_KEY_LENGTH];      byte[] temp = string2Byte(s_key);      if (temp.Length > key.Length)      {        m_message = "Key invalid.too long,need less than 32 Bytes";        return RET_ERROR;      }      key = string2Byte(s_key.PadRight(key.Length));      if (m_containKey)      {        s_encrypted = s_encrypted.Substring(CRYPTO_KEY_LENGTH * 2);      }      return Decrypt(s_encrypted, key);    }       #endregion    #region 动态生成密钥,并对明文进行AES加密、解密    /// <summary>    /// 动态生成密钥,并对明文进行AES加密    /// </summary>    /// <param name="s_crypto">明文</param>    /// <returns></returns>    public string Encrypt(string s_crypto)    {      byte[] key = new byte[CRYPTO_KEY_LENGTH];      m_aesCryptoServiceProvider.GenerateKey();      key = m_aesCryptoServiceProvider.Key;      return Encrypt(s_crypto, key);    }    /// <summary>    /// 从密文中解析出密钥,并对密文进行解密    /// </summary>    /// <param name="s_encrypted">密文</param>    /// <returns></returns>    public string Decrypt(string s_encrypted)    {      string s_key = string.Empty;      byte[] key = new byte[CRYPTO_KEY_LENGTH];       if (s_encrypted.Length <= CRYPTO_KEY_LENGTH * 2)      {        m_message = "Encrypted string invalid.";        return RET_ERROR;      }      if (m_containKey)      {        s_key = s_encrypted.Substring(0, CRYPTO_KEY_LENGTH * 2);        s_encrypted = s_encrypted.Substring(CRYPTO_KEY_LENGTH * 2);      }      key = hexString2Byte(s_key);      return Decrypt(s_encrypted, key);    }    #endregion    #region 私有方法    private string byte2HexString(byte[] bytes)    {      StringBuilder sb = new StringBuilder();      foreach (byte b in bytes)      {        sb.AppendFormat("{0:X2}", b);      }      return sb.ToString();    }    private byte[] hexString2Byte(string hex)    {      int len = hex.Length / 2;      byte[] bytes = new byte[len];      for (int i = 0; i < len; i++)      {        bytes[i] = (byte)(Convert.ToInt32(hex.Substring(i * 2, 2), 16));      }      return bytes;    }    private byte[] string2Byte(string str)    {      return Encoding.UTF8.GetBytes(str);    }    private string byte2String(byte[] bytes)    {      return Encoding.UTF8.GetString(bytes);    }    #endregion    }}

 

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DES

 数据加密标准(DES,Data Encryption Standard)是一种对称加密算法,很可能是使用最广泛的密钥系统,特别是在保护金融数据的安全中,是安全性比较高的一种算法,目前只有一种方法可以破解该算法,那就是穷举法。

using System;using System.Security.Cryptography;using System.Text;namespace Common.CryptHelper{  /// <summary>  /// DES加密/解密类。  /// </summary>  public class DESEncrypt  {    #region ========加密========    /// <summary>     /// 加密数据     /// </summary>     /// <param name="Text"></param>     /// <param name="sKey"></param>     /// <returns></returns>     public static string Encrypt(string Text, string sKey)    {      DESCryptoServiceProvider des = new DESCryptoServiceProvider();      byte[] inputByteArray;      inputByteArray = Encoding.Default.GetBytes(Text);      des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));      des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));      System.IO.MemoryStream ms = new System.IO.MemoryStream();      CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);      cs.Write(inputByteArray, 0, inputByteArray.Length);      cs.FlushFinalBlock();      StringBuilder ret = new StringBuilder();      foreach (byte b in ms.ToArray())      {        ret.AppendFormat("{0:X2}", b);      }      return ret.ToString();    }    #endregion    #region ========解密========    /// <summary>     /// 解密数据     /// </summary>     /// <param name="Text"></param>     /// <param name="sKey"></param>     /// <returns></returns>     public static string Decrypt(string Text, string sKey)    {      DESCryptoServiceProvider des = new DESCryptoServiceProvider();      int len;      len = Text.Length / 2;      byte[] inputByteArray = new byte[len];      int x, i;      for (x = 0; x < len; x++)      {        i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);        inputByteArray[x] = (byte)i;      }      des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));      des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));      System.IO.MemoryStream ms = new System.IO.MemoryStream();      CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);      cs.Write(inputByteArray, 0, inputByteArray.Length);      cs.FlushFinalBlock();      return Encoding.Default.GetString(ms.ToArray());    }    #endregion  }}

 

 

 

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RSA     

      RSA是第一个既能用于数据加密也能用于数字签名的算法。它易于理解和操作,也很流行。算法的名字以发明者的名字命名:Ron Rivest, Adi Shamir 和Leonard Adleman。但RSA的安全性一直未能得到理论上的证明。它经历了各种攻击,至今未被完全攻破。今天只有短的RSA钥匙才可能被强力方式解破。到2008年为止,世界上还没有任何可靠的攻击RSA算法的方式。只要其钥匙的长度足够长,用RSA加密的信息实际上是不能被解破的。但在分布式计算和量子计算机理论日趋成熟的今天,RSA加密安全性受到了挑战。

using System; using System.Text; using System.Security.Cryptography;namespace Common.CryptHelper{   /// <summary>   /// RSA加密解密及RSA签名和验证  /// </summary>   public class RSACryption   {         public RSACryption()     {           }         #region RSA 加密解密     #region RSA 的密钥产生       /// <summary>    /// RSA 的密钥产生 产生私钥 和公钥     /// </summary>    /// <param name="    /// <param name="    public void RSAKey(out string out string =new RSACryptoServiceProvider();         =rsa.Totrue);         = rsa.Tofalse);           }     #endregion     #region RSA的加密函数     //##############################################################################     //RSA 方式加密     //说明KEY必须是//在有一点需要说明!!该加密方式有 长度 限制的!!     //##############################################################################     //RSA的加密函数 string    public string RSAEncrypt(string string m_strEncryptString )     {             byte[] PlainTextBArray;       byte[] CypherTextBArray;       string Result;       RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();       rsa.From= (new UnicodeEncoding()).GetBytes(m_strEncryptString);       CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);       Result=Convert.ToBase64String(CypherTextBArray);       return Result;           }     //RSA的加密函数 byte[]    public string RSAEncrypt(string byte[] EncryptString )     {             byte[] CypherTextBArray;       string Result;       RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();       rsa.From= rsa.Encrypt(EncryptString, false);       Result=Convert.ToBase64String(CypherTextBArray);       return Result;           }     #endregion     #region RSA的解密函数     //RSA的解密函数 string    public string RSADecrypt(string string m_strDecryptString )     {            byte[] PlainTextBArray;       byte[] DypherTextBArray;       string Result;       System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();       rsa.From=Convert.FromBase64String(m_strDecryptString);       DypherTextBArray=rsa.Decrypt(PlainTextBArray, false);       Result=(new UnicodeEncoding()).GetString(DypherTextBArray);       return Result;           }     //RSA的解密函数 byte    public string RSADecrypt(string byte[] DecryptString )     {            byte[] DypherTextBArray;       string Result;       System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider();       rsa.From=rsa.Decrypt(DecryptString, false);       Result=(new UnicodeEncoding()).GetString(DypherTextBArray);       return Result;           }     #endregion     #endregion     #region RSA数字签名     #region 获取Hash描述表     //获取Hash描述表     public bool GetHash(string m_strSource, ref byte[] HashData)     {             //从字符串中取得Hash描述       byte[] Buffer;       System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");       Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);       HashData = MD5.ComputeHash(Buffer);       return true;           }     //获取Hash描述表     public bool GetHash(string m_strSource, ref string strHashData)     {             //从字符串中取得Hash描述       byte[] Buffer;       byte[] HashData;       System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");       Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);       HashData = MD5.ComputeHash(Buffer);       strHashData = Convert.ToBase64String(HashData);       return true;           }     //获取Hash描述表     public bool GetHash(System.IO.FileStream objFile, ref byte[] HashData)     {             //从文件中取得Hash描述       System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");       HashData = MD5.ComputeHash(objFile);       objFile.Close();       return true;           }     //获取Hash描述表     public bool GetHash(System.IO.FileStream objFile, ref string strHashData)     {             //从文件中取得Hash描述       byte[] HashData;       System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");       HashData = MD5.ComputeHash(objFile);       objFile.Close();       strHashData = Convert.ToBase64String(HashData);       return true;           }     #endregion     #region RSA签名     //RSA签名     public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref byte[] EncryptedSignatureData)     {               System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);         //设置签名的算法为MD5         RSAFormatter.SetHashAlgorithm("MD5");         //执行签名         EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);         return true;           }     //RSA签名     public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref string m_strEncryptedSignatureData)     {               byte[] EncryptedSignatureData;         System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);         //设置签名的算法为MD5         RSAFormatter.SetHashAlgorithm("MD5");         //执行签名         EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);         m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);         return true;           }     //RSA签名     public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref byte[] EncryptedSignatureData)     {               byte[] HashbyteSignature;         HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature);         System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);         //设置签名的算法为MD5         RSAFormatter.SetHashAlgorithm("MD5");         //执行签名         EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);         return true;           }     //RSA签名     public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref string m_strEncryptedSignatureData)     {               byte[] HashbyteSignature;         byte[] EncryptedSignatureData;         HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature);         System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);         //设置签名的算法为MD5         RSAFormatter.SetHashAlgorithm("MD5");         //执行签名         EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);         m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);         return true;           }     #endregion     #region RSA 签名验证     public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, byte[] DeformatterData)     {               System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);         //指定解密的时候HASH算法为MD5         RSADeformatter.SetHashAlgorithm("MD5");         if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))         {           return true;         }         else         {           return false;         }           }     public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, byte[] DeformatterData)     {               byte[] HashbyteDeformatter;         HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter);         System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);         //指定解密的时候HASH算法为MD5         RSADeformatter.SetHashAlgorithm("MD5");         if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))         {           return true;         }         else         {           return false;         }           }     public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, string p_strDeformatterData)     {               byte[] DeformatterData;         System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);         //指定解密的时候HASH算法为MD5         RSADeformatter.SetHashAlgorithm("MD5");         DeformatterData =Convert.FromBase64String(p_strDeformatterData);         if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))         {           return true;         }         else         {           return false;         }           }     public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, string p_strDeformatterData)     {               byte[] DeformatterData;         byte[] HashbyteDeformatter;         HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter);         System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();         RSA.From= new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);         //指定解密的时候HASH算法为MD5         RSADeformatter.SetHashAlgorithm("MD5");         DeformatterData =Convert.FromBase64String(p_strDeformatterData);         if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))         {           return true;         }         else         {           return false;         }           }     #endregion     #endregion   } } 

 

 

 

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HashCode

using System;using System.Text;using System.Security.Cryptography;namespace Common.CryptHelper{  /// <summary>  /// 得到随机安全码(哈希加密)。  /// </summary>  public class HashEncode  {    public HashEncode()    {      //      // TODO: 在此处添加构造函数逻辑      //    }    /// <summary>    /// 得到随机哈希加密字符串    /// </summary>    /// <returns></returns>    public static string GetSecurity()    {            string Security = HashEncoding(GetRandomValue());          return Security;    }    /// <summary>    /// 得到一个随机数值    /// </summary>    /// <returns></returns>    public static string GetRandomValue()    {            Random Seed = new Random();      string RandomVaule = Seed.Next(1, int.MaxValue).ToString();      return RandomVaule;    }    /// <summary>    /// 哈希加密一个字符串    /// </summary>    /// <param name="Security"></param>    /// <returns></returns>    public static string HashEncoding(string Security)    {                  byte[] Value;      UnicodeEncoding Code = new UnicodeEncoding();      byte[] Message = Code.GetBytes(Security);      SHA512Managed Arithmetic = new SHA512Managed();      Value = Arithmetic.ComputeHash(Message);      Security = "";      foreach(byte o in Value)      {        Security += (int) o + "O";      }      return Security;    }  }}

 

常用的一些加密算法,留备。会继续为大家分享一些 常用的 公共帮助类。

 

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