1：Xxtea支持中文；
2：支持JS和C#加解密之间的互转；
一：C#部分
return base64Decode(encoder.GetString(ToByteArray(Decrypt(ToUInt32Array(bytData, false), ToUInt32Array(bytKey, false)), true)));
}
private static UInt32[] Encrypt(UInt32[] v, UInt32[] k)
{
Int32 n = v.Length - 1;
if (n < 1)
{
return v;
}
if (k.Length < 4)
{
UInt32[] Key = new UInt32[4];
k.CopyTo(Key, 0);
k = Key;
}
UInt32 z = v[n], y = v[0], delta = 0x9E3779B9, sum = 0, e;
Int32 p, q = 6 + 52 / (n + 1);
while (q-- > 0)
{
sum = unchecked(sum + delta);
e = sum >> 2 & 3;
for (p = 0; p < n; p++)
{
y = v[p + 1];
z = unchecked(v[p] += (z >> 5 ^ y << 2) + (y >> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z));
}
y = v[0];
z = unchecked(v[n] += (z >> 5 ^ y << 2) + (y >> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z));
}
return v;
}
private static UInt32[] Decrypt(UInt32[] v, UInt32[] k)
{
Int32 n = v.Length - 1;
if (n < 1)
{
return v;
}
if (k.Length < 4)
{
UInt32[] Key = new UInt32[4];
k.CopyTo(Key, 0);
k = Key;
}
UInt32 z = v[n], y = v[0], delta = 0x9E3779B9, sum, e;
Int32 p, q = 6 + 52 / (n + 1);
sum = unchecked((UInt32)(q * delta));
while (sum != 0)
{
e = sum >> 2 & 3;
for (p = n; p > 0; p--)
{
z = v[p - 1];
y = unchecked(v[p] -= (z >> 5 ^ y << 2) + (y >> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z));
}
z = v[n];
y = unchecked(v[0] -= (z >> 5 ^ y << 2) + (y >> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z));
sum = unchecked(sum - delta);
}
return v;
}
private static UInt32[] ToUInt32Array(Byte[] Data, Boolean IncludeLength)
{
Int32 n = (((Data.Length & 3) == 0) ? (Data.Length >> 2) : ((Data.Length >> 2) + 1));
UInt32[] Result;
if (IncludeLength)
{
Result = new UInt32[n + 1];
Result[n] = (UInt32)Data.Length;
}
else
{
Result = new UInt32[n];
}
n = Data.Length;
for (Int32 i = 0; i < n; i++)