public static string Encrypt(string Source, string[] Key)
{
if (String.IsNullOrEmpty(Source))
{
throw new Exception("没有输入明文！");
}
if (Key.Length < 3)
{
throw new Exception("密匙个数不足（需3个密匙）！");
}
else
{
int kl1 = Encoding.Default.GetBytes(Key[0]).Length;
int kl2 = Encoding.Default.GetBytes(Key[1]).Length;
int kl3 = Encoding.Default.GetBytes(Key[2]).Length;
if (kl1 != 8 || kl2 != 8 || kl3 != 8)
{
throw new Exception("每个密钥必须均为8个字符或4个汉字！");
}
}
DESKey desKey1 = new DESKey(Key[0]);
DESKey desKey2 = new DESKey(Key[1]);
DESKey desKey3 = new DESKey(Key[2]);
int space = (8 - (Encoding.Unicode.GetBytes(Source)).Length % 8) % 8;
for (int i = 0; i < space; i++)
{
Source = Source + " ";
}
byte[] textByte = Encoding.Unicode.GetBytes(Source);
TripleDESCipher cipher = new TripleDESCipher(null, textByte, desKey1, true);
TripleDESCipher decipher = new TripleDESCipher(cipher.getOutStr(), null, desKey2, false);
cipher = new TripleDESCipher(null, decipher.getOutBytes(), desKey3, true);
return(cipher.getOutStr());
}
public static string Decrypt(string Source, string[] Key)
{
if (String.IsNullOrEmpty(Source))
{
throw new Exception("没有输入明文！");
}
if (Key.Length < 3)
{
throw new Exception("密匙个数不足（需3个密匙）！");
}
else
{
int kl1 = Encoding.Default.GetBytes(Key[0]).Length;
int kl2 = Encoding.Default.GetBytes(Key[1]).Length;
int kl3 = Encoding.Default.GetBytes(Key[2]).Length;
if (kl1 != 8 || kl2 != 8 || kl3 != 8)
{
throw new Exception("每个密钥必须均为8个字符或4个汉字！");
}
}
for (int i = 0; i < Source.Length; i++)
{
if ((!Source[i].ToString().Equals("1")) && (!Source[i].ToString().Equals("0")))
{
throw new Exception("密文内容有误！（密文内容仅含有0或1）");
}
}
DESKey desKey1 = new DESKey(Key[0]);
DESKey desKey2 = new DESKey(Key[1]);
DESKey desKey3 = new DESKey(Key[2]);
TripleDESCipher decipher = new TripleDESCipher(Source, null, desKey3, false);
TripleDESCipher cipher = new TripleDESCipher(null, decipher.getOutBytes(), desKey2, true);
decipher = new TripleDESCipher(cipher.getOutStr(), null, desKey1, false);
return(Encoding.Unicode.GetString(decipher.getOutBytes()));
}
