C# 对称加解密

快来打我* 2022-08-08 00:58 196阅读 0赞

/// <summary>  
/// DES加密调用  
/// </summary>  
/// <param name="inputStr">需要加密的字符串</param>  
/// <returns>加密结果</returns>  
public static string DESEncrypt(string inputStr)  
\{  
return Encrypt(inputStr,"Futpower");  
\}  
  
  
/// <summary>  
/// DES解密调用  
/// </summary>  
/// <param name="inputStr">需要解密的字符串</param>  
/// <returns>解密结果</returns>  
public static string DESDecrypt(string inputStr)  
\{  
return Decrypt(inputStr, "Futpower");  
\}  
  
  
/// <summary>  
/// 进行DES加密。  
/// </summary>  
/// <param name="pToEncrypt">要加密的字符串。</param>  
/// <param name="sKey">密钥，且必须为8位。</param>  
/// <returns>以Base64格式返回的加密字符串。</returns>  
public static string Encrypt(string pToEncrypt, string sKey)  
\{  
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())  
\{  
byte\[\] inputByteArray = Encoding.UTF8.GetBytes(pToEncrypt);  
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);  
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);  
MemoryStream ms = new MemoryStream();  
  
  
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))  
\{  
cs.Write(inputByteArray, 0, inputByteArray.Length);  
cs.FlushFinalBlock();  
cs.Close();  
\}  
string str = Convert.ToBase64String(ms.ToArray());  
ms.Close();  
return str;  
\}  
\}  
  
  
/// <summary>  
/// 进行DES解密。  
/// </summary>  
/// <param name="pToDecrypt">要解密的以Base64</param>  
/// <param name="sKey">密钥，且必须为8位。</param>  
/// <returns>已解密的字符串。</returns>  
public static string Decrypt(string pToDecrypt, string sKey)  
\{  
byte\[\] inputByteArray = Convert.FromBase64String(pToDecrypt);  
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())  
\{  
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);  
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);  
MemoryStream ms = new MemoryStream();  
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))  
\{  
cs.Write(inputByteArray, 0, inputByteArray.Length);  
cs.FlushFinalBlock();  
cs.Close();  
\}  
string str = Encoding.UTF8.GetString(ms.ToArray());  
ms.Close();  
return str;  
\}  
\}