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(KiriKiri.KissCrypt): new decryptor.

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This commit is contained in:
morkt 2017-03-24 22:50:36 +04:00
parent 1d849c37d6
commit 77cb9a853f
1 changed files with 22 additions and 0 deletions
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22
ArcFormats/KiriKiri/CryptAlgorithms.cs
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@ -954,4 +954,26 @@ namespace GameRes.Formats.KiriKiri
[NonSerialized] [NonSerialized]
Dictionary<string, string> KnownNames = null; Dictionary<string, string> KnownNames = null;
} }
[Serializable]
public class KissCrypt : ICrypt
{
public override void Decrypt (Xp3Entry entry, long offset, byte[] data, int pos, int count)
{
uint key = entry.Hash ^ (entry.Hash >> 19) ^ 0x4A9EEFF0u;
int i = 0;
while (0 != ((offset + i) & 0xF))
++i;
while (i < count)
{
data[pos+i] ^= (byte)(key ^ (offset + i));
i += 0x10;
}
}
public override void Encrypt (Xp3Entry entry, long offset, byte[] data, int pos, int count)
{
Decrypt (entry, offset, data, pos, count);
}
}
} }