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added some XP3 encryption schemes.

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This commit is contained in:
morkt
2016-03-07 18:23:10 +04:00
parent f377b0088c
commit 9beff31fee
6 changed files with 263 additions and 3 deletions
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49
ArcFormats/KiriKiri/CryptAlgorithms.cs
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@@ -56,6 +56,13 @@ namespace GameRes.Formats.KiriKiri
{
throw new NotImplementedException (Strings.arcStrings.MsgEncNotImplemented);
}
/// <summary>
/// Perform necessary initialization specific to an archive being opened.
/// </summary>
public virtual void Init (ArcFile arc)
{
}
}
[Serializable]
@@ -112,6 +119,44 @@ namespace GameRes.Formats.KiriKiri
}
}
[Serializable]
public class MizukakeCrypt : ICrypt
{
public override bool HashAfterCrypt { get { return true; } }
public override void Decrypt (Xp3Entry entry, long offset, byte[] values, int pos, int count)
{
if (offset <= 0x103 && offset + count > 0x103)
values[pos+0x103-offset]--;
for (int i = 0; i < count; ++i)
{
values[pos+i] ^= 0xB6;
}
if (offset > 0x3F82)
return;
if (offset + count > 0x3F82)
values[pos+0x3F82-offset] ^= 1;
if (offset > 0x83)
return;
if (offset + count > 0x83)
values[pos+0x83-offset] ^= 3;
}
public override void Encrypt (Xp3Entry entry, long offset, byte[] values, int pos, int count)
{
for (int i = 0; i < count; ++i)
{
values[pos+i] ^= 0xB6;
}
if (offset <= 0x3F82 && offset + count > 0x3F82)
values[pos+0x3F82-offset] ^= 1;
if (offset <= 0x83 && offset + count > 0x83)
values[pos+0x83-offset] ^= 3;
if (offset <= 0x103 && offset + count > 0x103)
values[pos+0x103-offset]++;
}
}
[Serializable]
public class HashCrypt : ICrypt
{
@@ -504,7 +549,7 @@ namespace GameRes.Formats.KiriKiri
}
[Serializable]
public class IncubusCrypt : ICrypt
public class PoringSoftCrypt : ICrypt
{
public override byte Decrypt (Xp3Entry entry, long offset, byte value)
{
@@ -578,7 +623,7 @@ namespace GameRes.Formats.KiriKiri
var ext_bin = new byte[16];
Encodings.cp932.GetBytes (ext, 0, Math.Min (4, ext.Length), ext_bin, 0);
key = ~LittleEndian.ToUInt32 (ext_bin, 0);
if (".asd.ks.tjs".Contains (ext))
if (".asd\0.ks\0.tjs\0".Contains (ext+'\0'))
return entry.Size;
}
else