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C#实现3DES加密解密.doc

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HYPERLINK"http://blog.vckbase.com/wangjun/archive/2006/10/18/22802.html".NET中的3DES加密 如果编码有问题，可以尝试Encoding.GetEncoding("gb2312") usingSystem.Text;usingSystem.Security.Cryptography;publicstaticstringDES3Encrypt(stringstrString,stringstrKey) { TripleDESCryptoServiceProviderDES=newTripleDESCryptoServiceProvider();MD5CryptoServiceProviderhashMD5=newMD5CryptoServiceProvider();DES.Key=hashMD5.ComputeHash(Encoding.Default.GetBytes(strKey));DES.Mode=CipherMode.ECB;ICryptoTransformDESEncrypt=DES.CreateEncryptor();byte[]Buffer=Encoding.Default.GetBytes(strString);returnConvert.ToBase64String(DESEncrypt.TransformFinalBlock(Buffer,0,Buffer.Length));}publicstaticstringDES3Decrypt(stringstrString,stringstrKey){TripleDESCryptoServiceProviderDES=newTripleDESCryptoServiceProvider();MD5CryptoServiceProviderhashMD5=newMD5CryptoServiceProvider();DES.Key=hashMD5.ComputeHash(Encoding.Default.GetBytes(strKey));DES.Mode=CipherMode.ECB;ICryptoTransformDESDecrypt=DES.CreateDecryptor();stringresult="";try{byte[]Buffer=Convert.FromBase64String(strString);result=Encoding.Default.GetString(DESDecrypt.TransformFinalBlock(Buffer,0,Buffer.Length));}catch(System.Exceptione){throw(newSystem.Exception("null",e));}returnresult;} C#实现3DES加密解密 usingSystem; usingSystem.Collections.Generic; usingSystem.Text; usingSystem.IO; usingSystem.Security.Cryptography; namespaceConsoleApplication1 { classProgram { publicstaticstringEncrypt3DES(stringa_strString,stringa_strKey) { TripleDESCryptoServiceProviderDES=newTripleDESCryptoServiceProvider(); DES.Key=ASCIIEncoding.ASCII.GetBytes(a_strKey); DES.Mode=CipherMode.ECB; ICryptoTransformDESEncrypt=DES.CreateEncryptor(); byte[]Buffer=ASCIIEncoding.ASCII.GetBytes(a_strString); returnConvert.ToBase64String(DESEncrypt.TransformFinalBlock(Buffer,0,Buffer.Length)); } publicstaticstringDecrypt3DES(stringa_strString,stringa_strKey) { TripleDESCryptoServiceProviderDES=newTripleDESCryptoServiceProvider(); DES.Key=ASCIIEncoding.ASCII.GetBytes(a_strKey); DES.Mode=CipherMo