知识大全一个可逆的DES和TripleDES方式加密类

Posted 2022-07-17 知

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using System;using System Security;using System Security Cryptography;using System IO;using System Text;namespace EncryptDownmoon /**//// <summary> /// EncryptSqlConn 的摘要说明 /// </summary> public class EncryptSqlConn public EncryptSqlConn() if(mCSP ==null) mCSP = SetEnc(); /**//// <summary> /// 设置加密方式为DES 为TripleDES /// </summary> /// <returns></returns> public EncryptSqlConn(int EnMethod) if(EnMethod== ) lngEnMethod= ; else lngEnMethod= ; if(mCSP ==null) mCSP = SetEnc(); 方法#region 方法 private SymmetricAlgorithm mCSP; private int m_lngEnMethod= ; /**//// <summary> /// 加密方式为DES 为TripleDES /// </summary> public int lngEnMethod get return m_lngEnMethod; set m_lngEnMethod=value; private SymmetricAlgorithm SetEnc() if(lngEnMethod== ) return new DESCryptoServiceProvider(); else return new TripleDESCryptoServiceProvider(); //测试键值 private string genKeyValue get mCSP GenerateKey(); return Convert ToBase String(mCSP Key); //测试IV值 private string genIVValue get mCSP GenerateIV(); return Convert ToBase String(mCSP IV); /**//// <summary> /// 加密字串 /// </summary> /// <param name= Value ></param> /// <returns></returns> public string EncryptString(string Value) ICryptoTransform ct; MemoryStream ms; CryptoStream cs; byte[] byt; ct = mCSP CreateEncryptor(mCSP Key mCSP IV); //ct = mCSP CreateEncryptor(genKeyValue genIVValue); byt = Encoding UTF GetBytes(Value); ms = new MemoryStream(); cs = new CryptoStream(ms ct CryptoStreamMode Write); cs Write(byt byt Length); cs FlushFinalBlock(); cs Close(); return Convert ToBase String(ms ToArray()); /**//// <summary> /// 解密字串 /// </summary> /// <param name= Value ></param> /// <returns></returns> public string DecryptString(string Value) ICryptoTransform ct; MemoryStream ms; CryptoStream cs; byte[] byt; ct = mCSP CreateDecryptor(mCSP Key mCSP IV); //ct = mCSP CreateDecryptor(genKeyValue genIVValue); byt = Convert FromBase String(Value); ms = new MemoryStream(); cs = new CryptoStream(ms ct CryptoStreamMode Write); cs Write(byt byt Length); cs FlushFinalBlock(); cs Close(); return Encoding UTF GetString(ms ToArray()); #endregion cha138/Article/program/net/201311/12830

知识大全 一个可逆的DES和TripleDES方式加密类

知识大全一个可逆的DES和TripleDES方式加密类