private static uint[] Decrypt(uint[] v, uint[] k)
{
int num = v.Length - 1;
if (num < 1)
{
return(v);
}
uint y = v[0];
int num2 = 6 + 52 / (num + 1);
for (uint num3 = (uint)((long)num2 * (long)(-1640531527)); num3 != 0u; num3 -= 2654435769u)
{
uint e = num3 >> 2 & 3u;
int i;
uint z;
for (i = num; i > 0; i--)
{
z = v[i - 1];
y = (v[i] -= XXTEA.MX(num3, y, z, i, e, k));
}
z = v[num];
y = (v[0] -= XXTEA.MX(num3, y, z, i, e, k));
}
return(v);
}
private static uint[] Encrypt(uint[] v, uint[] k)
{
int num = v.Length - 1;
if (num < 1)
{
return(v);
}
uint z = v[num];
uint num2 = 0u;
int num3 = 6 + 52 / (num + 1);
while (0 < num3--)
{
num2 += 2654435769u;
uint e = num2 >> 2 & 3u;
int i;
uint y;
for (i = 0; i < num; i++)
{
y = v[i + 1];
z = (v[i] += XXTEA.MX(num2, y, z, i, e, k));
}
y = v[0];
z = (v[num] += XXTEA.MX(num2, y, z, i, e, k));
}
return(v);
}
/// <summary>
/// 数据解密
/// </summary>
/// <param name="data"></param>
/// <param name="key"></param>
/// <returns></returns>
public static byte[] Decrypt(byte[] data, byte[] key)
{
if (data.Length == 0)
{
return(data);
}
return(XXTEA.ToByteArray(XXTEA.Decrypt(XXTEA.ToUInt32Array(data, false), XXTEA.ToUInt32Array(XXTEA.FixKey(key), false)), true));
}
public static byte[] Decrypt(byte[] data, string key)
{
return(XXTEA.Decrypt(data, XXTEA.utf8.GetBytes(key)));
}
public static byte[] Encrypt(string data, string key)
{
return(XXTEA.Encrypt(XXTEA.utf8.GetBytes(data), XXTEA.utf8.GetBytes(key)));
}