C#DES加解密

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public static string Key
        {
            get
            {
                return key;
            }
            set
            {
                key = value;
            }
        }

DES加密

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/// <summary>       
/// DES Encrypt   
/// </summary>
/// <param name="encryptString">要加密的字符串</param>
/// <returns>加密后的字符串</returns>
public static string DesEncrypt(string encryptString)
{
    byte[] keyBytes = System.Text.Encoding.UTF8.GetBytes(key.Substring(0, 8));
    byte[] keyIV = keyBytes;
    byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
    System.Security.Cryptography.DESCryptoServiceProvider provider = new System.Security.Cryptography.DESCryptoServiceProvider();
    System.IO.MemoryStream mStream = new System.IO.MemoryStream();
    System.Security.Cryptography.CryptoStream cStream = new System.Security.Cryptography.CryptoStream(mStream, provider.CreateEncryptor(keyBytes, keyIV), System.Security.Cryptography.CryptoStreamMode.Write);
    cStream.Write(inputByteArray, 0, inputByteArray.Length);
    cStream.FlushFinalBlock();
    return Convert.ToBase64String(mStream.ToArray());
 
}   

  

DES解密

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/// <summary>       
/// Function : DES Decrypt
/// </summary>
/// <param name="decryptString">要解密的字符串</param>
/// <returns>解密后的字符串</returns>
public static string DesDecrypt(string decryptString)
{
    byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(0, 8));
    byte[] keyIV = keyBytes;
    byte[] inputByteArray = Convert.FromBase64String(decryptString);
    System.Security.Cryptography.DESCryptoServiceProvider provider = new System.Security.Cryptography.DESCryptoServiceProvider();
    System.IO.MemoryStream mStream = new System.IO.MemoryStream();
    System.Security.Cryptography.CryptoStream cStream = new System.Security.Cryptography.CryptoStream(mStream, provider.CreateDecryptor(keyBytes, keyIV), System.Security.Cryptography.CryptoStreamMode.Write);
    cStream.Write(inputByteArray, 0, inputByteArray.Length);
    cStream.FlushFinalBlock();
    return Encoding.UTF8.GetString(mStream.ToArray());

  

posted @   翘首以望  阅读(181)  评论(0编辑  收藏  举报
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