C#字符串使用密钥进行加解密
第一个为大家分享的是C#字符串使用密钥进行加解密代码，具体内容如下
publicclassDesEncrypt
{
///<summary>
///算法偏移量
///</summary>
conststringm_IV="12345678";
///<summary>
///功能描述:根据输入的密钥生成8位密钥
///作者:爱给模板网2gei.cn
///创建日期:2015-07-2017:25:26
///</summary>
///<paramname="strkey">strkey</param>
///<returns>8位密钥</returns>
privatestaticstringGetKey(stringstrkey)
{
if(string.IsNullOrEmpty(strkey))
{
strkey="InfoColl";
}
if(strkey.Length%8==0)
{
returnstrkey;
}
else
{
returnGetKey(strkey+"0");
}
}
///<summary>
///功能描述:加密字符串
///作者:爱给模板网2gei.cn
///创建日期:2015-07-2017:18:31
///任务编号:
///</summary>
///<paramname="strSourceString">原字符串</param>
///<paramname="strKey">密钥</param>
///<returns>加密后的字符串</returns>
publicstaticstringEncrypt(stringstrSourceString,stringstrKey)
{
strKey=GetKey(strKey);
byte[]btKey=Encoding.UTF8.GetBytes(strKey);
byte[]btIV=Encoding.UTF8.GetBytes(m_IV);
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();
using(MemoryStreamms=newMemoryStream())
{
try
{
byte[]inData=Encoding.UTF8.GetBytes(strSourceString);
using(CryptoStreamcs=newCryptoStream(ms,des.CreateEncryptor(btKey,btIV),CryptoStreamMode.Write))
{
cs.Write(inData,0,inData.Length);
cs.FlushFinalBlock();
}
returnConvert.ToBase64String(ms.ToArray());
}
catch
{
returnstrSourceString;
}
}
}
///<summary>
///功能描述:解密字符串
///作者:爱给模板网2gei.cn
///创建日期:2015-07-2017:18:49
///任务编号:
///</summary>
///<paramname="strEncryptedString">原字符串</param>
///<paramname="strKey">密钥</param>
///<returns>解密后的字符串</returns>
publicstaticstringDecrypt(stringstrEncryptedString,stringstrKey)
{
strKey=GetKey(strKey);
byte[]btKey=Encoding.UTF8.GetBytes(strKey);
byte[]btIV=Encoding.UTF8.GetBytes(m_IV);
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();
using(MemoryStreamms=newMemoryStream())
{
try
{
byte[]inData=Convert.FromBase64String(strEncryptedString);
using(CryptoStreamcs=newCryptoStream(ms,des.CreateDecryptor(btKey,btIV),CryptoStreamMode.Write))
{
cs.Write(inData,0,inData.Length);
cs.FlushFinalBlock();
}
returnEncoding.UTF8.GetString(ms.ToArray());
}
catch
{
returnstrEncryptedString;
}
}
}
}
C#字符串加密和解密
usingSystem.Security.Cryptography;
usingSystem.IO;
//默认密钥向量
privatestaticbyte[]Keys={0x12,0x34,0x56,0x78,0x90,0xAB,0xCD,0xEF};
///<summary>
///DES加密字符串
///</summary>
///<paramname="encryptString">待加密的字符串</param>
///<paramname="encryptKey">加密密钥,要求为8位</param>
///<returns>加密成功返回加密后的字符串，失败返回源串</returns>
publicstaticstringEncryptDES(stringencryptString,stringencryptKey)
{
try
{
byte[]rgbKey=Encoding.UTF8.GetBytes(encryptKey.Substring(0,8));//转换为字节
byte[]rgbIV=Keys;
byte[]inputByteArray=Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProviderdCSP=newDESCryptoServiceProvider();//实例化数据加密标准
MemoryStreammStream=newMemoryStream();//实例化内存流
//将数据流链接到加密转换的流
CryptoStreamcStream=newCryptoStream(mStream,dCSP.CreateEncryptor(rgbKey,rgbIV),CryptoStreamMode.Write);
cStream.Write(inputByteArray,0,inputByteArray.Length);
cStream.FlushFinalBlock();
returnConvert.ToBase64String(mStream.ToArray());
}
catch
{
returnencryptString;
}
}
///<summary>
///DES解密字符串
///</summary>
///<paramname="decryptString">待解密的字符串</param>
///<paramname="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
///<returns>解密成功返回解密后的字符串，失败返源串</returns>
publicstaticstringDecryptDES(stringdecryptString,stringdecryptKey)
{
try
{
byte[]rgbKey=Encoding.UTF8.GetBytes(decryptKey);
byte[]rgbIV=Keys;
byte[]inputByteArray=Convert.FromBase64String(decryptString);
DESCryptoServiceProviderDCSP=newDESCryptoServiceProvider();
MemoryStreammStream=newMemoryStream();
CryptoStreamcStream=newCryptoStream(mStream,DCSP.CreateDecryptor(rgbKey,rgbIV),CryptoStreamMode.Write);
cStream.Write(inputByteArray,0,inputByteArray.Length);
cStream.FlushFinalBlock();
returnEncoding.UTF8.GetString(mStream.ToArray());
}
catch
{
returndecryptString;
}
}
stringEncryptStr=EncryptDESString.EncryptDES("aaaaaaaaaa","ssssssss");//返回加密后的字符串
stringDecryptStr=EncryptDESString.DecryptDES(EncryptStr,"ssssssss");//解密字符串
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。