1 Agregue una clase de ayuda, que contiene Clave, método de cifrado, método de descifrado
public class Keys
{
private static string DESKey = "key";
#region ========加密========
/// <summary>
/// 加密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Encrypt(string Text)
{
return Encrypt(Text, DESKey);
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
inputByteArray = Encoding.Default.GetBytes(Text);
System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create();
des.Key = ASCIIEncoding.ASCII.GetBytes(BitConverter.ToString(md5.ComputeHash(Encoding.UTF8.GetBytes(sKey + "md5"))).Replace("-", null).Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(BitConverter.ToString(md5.ComputeHash(Encoding.UTF8.GetBytes(sKey + "md5"))).Replace("-", null).Substring(0, 8));
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();
}
public static string Decrypt(string Text)
{
if (!string.IsNullOrEmpty(Text))
{
string res= Decrypt(Text, DESKey);
return res;
}
else
{
return "";
}
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text, string sKey)
{
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;
}
System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create();
des.Key = ASCIIEncoding.ASCII.GetBytes(BitConverter.ToString(md5.ComputeHash(Encoding.UTF8.GetBytes(sKey + "md5"))).Replace("-", null).Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(BitConverter.ToString(md5.ComputeHash(Encoding.UTF8.GetBytes(sKey + "md5"))).Replace("-", null).Substring(0, 8));
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());
}
#endregion
}