/// DES加密
/// </summary>
/// <param name="encryptString"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public string DesEncrypt(string encryptString, string sKey)
{
var rgbKey = Encoding.UTF8.GetBytes(sKey.Substring(0, 8));
var rgbIV = rgbKey;
var inputByteArray = Encoding.UTF8.GetBytes(encryptString);
var dCSP = new DESCryptoServiceProvider {Mode = CipherMode.ECB, Padding = PaddingMode.PKCS7};
var mStream = new MemoryStream();
var cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
var ret = new StringBuilder();
foreach (byte b in mStream.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return ret.ToString();
}
解密
public static string MD5Decrypt(string pToDecrypt, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider() { Mode = CipherMode.ECB, Padding = PaddingMode.PKCS7 };
byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
for (int x = 0; x < pToDecrypt.Length / 2; x++)
{
int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
inputByteArray[x] = (byte)i;
}
des.Key = Encoding.UTF8.GetBytes(sKey);
des.IV = Encoding.UTF8.GetBytes(sKey);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
return System.Text.Encoding.Default.GetString(ms.ToArray());
}