类：
/// <summary>
/// DESEncrypt加密解密算法。
/// </summary>
public class DESEncrypt
{
private DESEncrypt()
{
//
// TODO: 在此处添加构造函数逻辑
//
} //自定义口令
private static string key = "XluK7kDuA9yptTks"; /// <summary>
/// 对称加密解密的密钥
/// </summary>
public static string Key
{
get
{
return key;
}
set
{
key = value;
}
} /// <summary>
/// DES加密
/// </summary>
/// <param name="encryptString"></param>
/// <returns></returns>
public static string DesEncrypt(string encryptString)
{
try
{
byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(, ));
byte[] keyIV = keyBytes;
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, provider.CreateEncryptor(keyBytes, keyIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, , inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
catch (Exception)
{
return "";
}
} /// <summary>
/// DES解密
/// </summary>
/// <param name="decryptString"></param>
/// <returns></returns>
public static string DesDecrypt(string decryptString)
{
try
{
byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(, ));
byte[] keyIV = keyBytes;
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, provider.CreateDecryptor(keyBytes, keyIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, , inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());
}
catch (Exception)
{
return "";
}
}
}
调用：
//加密
string account=DESEncrypt.DesEncrypt(“account”);
//解密
account=DESEncrypt.DesDecrypt(account);