/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text, string sKey)
{
try
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len;
len = Text.Length / 2;
byte[] inputByteArray = new byte[len];
int x, i;
for (x = 0; x < len; x++)
{
i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);
inputByteArray[x] = (byte)i;
}
string md5SKey = MD5Helper.Get32MD5One(sKey).Substring(0, 8);
des.Key = ASCIIEncoding.ASCII.GetBytes(md5SKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(md5SKey);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return(Encoding.Default.GetString(ms.ToArray()));
}
catch { return("error"); }
}
/// <summary>
/// 验证用户密码
/// </summary>
/// <param name="password">原始密码</param>
/// <param name="secretkey">加密密钥</param>
/// <param name="userPassword">用户验证密码</param>
/// <returns></returns>
public static bool VerifyPassword(string password, string secretKey, string userPassword)
{
string dbPassword = MD5Helper.Get32MD5One(DESEncrypt.Encrypt(MD5Helper.Get32MD5One(password).ToLower(), secretKey).ToLower()).ToLower();
if (dbPassword == userPassword)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text, string sKey)
{
try
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
inputByteArray = Encoding.Default.GetBytes(Text);
string md5SKey = MD5Helper.Get32MD5One(sKey).Substring(0, 8);
des.Key = ASCIIEncoding.ASCII.GetBytes(md5SKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(md5SKey);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return(ret.ToString());
}
catch { return("error"); }
}
/// <summary>
/// 生成密码
/// </summary>
/// <param name="password">原始密码</param>
/// <param name="secretkey">加密密钥</param>
/// <returns></returns>
public static string CreatePassword(string password, string secretKey)
{
string md5Password = MD5Helper.Get32MD5One(DESEncrypt.Encrypt(MD5Helper.Get32MD5One(password).ToLower(), secretKey).ToLower()).ToLower();
return(md5Password);
}