private void TryDetectLuaEnc(byte[] luaBinary)
{
Wz_Crypto crypto = this.WzFile.WzStructure.encryption;
byte[] tempBuffer = new byte[Math.Min(luaBinary.Length, 64)];
char[] tempStr = new char[tempBuffer.Length];
//测试各种加密方式 判断符合度最高的
int maxCharCount = 0;
var maxCharEnc = Wz_Crypto.Wz_CryptoKeyType.Unknown;
foreach (var enc in new[] {
Wz_Crypto.Wz_CryptoKeyType.GMS,
Wz_Crypto.Wz_CryptoKeyType.KMS,
Wz_Crypto.Wz_CryptoKeyType.BMS
})
{
Buffer.BlockCopy(luaBinary, 0, tempBuffer, 0, tempBuffer.Length);
crypto.EncType = enc;
crypto.keys.Decrypt(tempBuffer, 0, tempBuffer.Length);
int count = Encoding.UTF8.GetChars(tempBuffer, 0, tempBuffer.Length, tempStr, 0);
int asciiCount = tempStr.Take(count).Count(chr => 32 <= chr && chr <= 127);
if (maxCharCount < asciiCount)
{
maxCharEnc = enc;
maxCharCount = asciiCount;
}
}
crypto.EncType = maxCharEnc;
this.checEnc = true;
}
private void TryDetectEnc()
{
Wz_Crypto crypto = this.WzFile.WzStructure.encryption;
if (crypto.EncType != Wz_Crypto.Wz_CryptoKeyType.Unknown)
{
if (IsIllegalTag())
{
this.checEnc = true;
return;
}
}
var oldenc = crypto.EncType;
crypto.EncType = Wz_Crypto.Wz_CryptoKeyType.KMS;
if (IsIllegalTag())
{
this.checEnc = true;
return;
}
crypto.EncType = Wz_Crypto.Wz_CryptoKeyType.GMS;
if (IsIllegalTag())
{
this.checEnc = true;
return;
}
crypto.EncType = Wz_Crypto.Wz_CryptoKeyType.BMS;
if (IsIllegalTag())
{
this.checEnc = true;
return;
}
crypto.EncType = oldenc;
this.checEnc = false;
}
