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(KiriKiri): added another encryption algorithm.

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This commit is contained in:
morkt 2016-06-14 18:13:38 +04:00
parent eb61ca6861
commit 5c7170f9c9
1 changed files with 26 additions and 1 deletions
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27
ArcFormats/KiriKiri/CryptAlgorithms.cs
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@ -581,11 +581,13 @@ namespace GameRes.Formats.KiriKiri
{
public override byte Decrypt (Xp3Entry entry, long offset, byte value)
{
return (byte)(value ^ (entry.Hash >> 12));
return offset < 5 ? value : (byte)(value ^ (entry.Hash >> 12));
}
public override void Decrypt (Xp3Entry entry, long offset, byte[] values, int pos, int count)
{
if (offset < 5)
return;
byte key = (byte)(entry.Hash >> 12);
for (int i = 0; i < count; ++i)
{
@ -636,4 +638,27 @@ namespace GameRes.Formats.KiriKiri
return Math.Min (entry.Size, 0x100u);
}
}
[Serializable]
public class SourireCrypt : ICrypt
{
public override byte Decrypt (Xp3Entry entry, long offset, byte value)
{
return (byte)(value ^ entry.Hash ^ 0xCD);
}
public override void Decrypt (Xp3Entry entry, long offset, byte[] values, int pos, int count)
{
byte key = (byte)(entry.Hash ^ 0xCD);
for (int i = 0; i < count; ++i)
{
values[pos+i] ^= key;
}
}
public override void Encrypt (Xp3Entry entry, long offset, byte[] values, int pos, int count)
{
Decrypt (entry, offset, values, pos, count);
}
}
}