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bunch of stuff.

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This commit is contained in:
morkt
2023-08-24 01:33:50 +04:00
parent ea096c52ef
commit 77fde27d26
119 changed files with 11078 additions and 619 deletions
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25
ArcFormats/Cmvs/ArcCPZ.cs
View File

@@ -28,6 +28,7 @@ using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Linq;
using GameRes.Formats.Cmvs;
using GameRes.Utility;
namespace GameRes.Formats.Purple
@@ -133,18 +134,38 @@ namespace GameRes.Formats.Purple
var index_copy = new CowArray<byte> (index, 0, file_table_size).ToArray();
var cmvs_md5 = cpz.CmvsMd5.Clone() as uint[];
foreach (var scheme in KnownSchemes.Values.Where (s => s.Version == cpz.Version))
var scheme = CreateCpz5Scheme(Md5Variant.Mirai);
// foreach (var scheme in KnownSchemes.Values.Where (s => s.Version == cpz.Version))
{
var arc = ReadIndex (file, scheme, cpz, index, arc_key);
if (null != arc)
return arc;
// both CmvsMd5 and index was altered by ReadIndex in decryption attempt
Array.Copy (cmvs_md5, cpz.CmvsMd5, 4);
Array.Copy (index, index_copy, file_table_size);
Array.Copy (index_copy, index, file_table_size);
}
throw new UnknownEncryptionScheme();
}
static uint[] DefaultCpz5Secret = {
0xCD90F089, 0xE982B782, 0xA282AB88, 0xCD82718E, 0x52838A83, 0xA882AA82, 0x7592648E, 0xB582AB82,
0xE182BF82, 0xDC82A282, 0x4281B782, 0xED82F48E, 0xBF82EA82, 0xA282E182, 0xB782DC82, 0x6081E682,
0xC6824181, 0xA482A282, 0xE082A982, 0xF48EA482, 0xBF82C182, 0xA282E182, 0xB582DC82, 0xF481BD82,
};
static CmvsScheme CreateCpz5Scheme(Md5Variant md5)
{
return new CmvsScheme
{
Version = 5,
Cpz5Secret = DefaultCpz5Secret,
Md5Variant = md5,
DecoderFactor = 0x1A743125,
EntryInitKey = 0x2547A39E,
EntryTailKey = 0xBC,
};
}
internal ArcFile ReadIndex (ArcView file, CmvsScheme scheme, CpzHeader cpz, byte[] index, ArchiveKey arc_key)
{
var cmvs_md5 = Cmvs.MD5.Create (scheme.Md5Variant);

22
ArcFormats/Cmvs/CmvsMD5.cs
View File

@@ -27,7 +27,7 @@ using GameRes.Utility;
namespace GameRes.Formats.Cmvs
{
public enum Md5Variant { A, B, Chrono, Memoria, Natsu, Aoi }
public enum Md5Variant { A, B, Chrono, Memoria, Natsu, Aoi, Mirai }
public abstract class MD5 : Cryptography.MD5Base
{
@@ -46,6 +46,7 @@ namespace GameRes.Formats.Cmvs
case Md5Variant.Memoria: return new Md5Memoria();
case Md5Variant.Natsu: return new Md5Natsu();
case Md5Variant.Aoi: return new Md5Aoi();
case Md5Variant.Mirai: return new Md5Mirai();
default: throw new System.ArgumentException ("Unknown MD5 variant", "variant");
}
}
@@ -153,6 +154,25 @@ namespace GameRes.Formats.Cmvs
}
}
public class Md5Mirai : MD5
{
protected override void InitState ()
{
m_state[0] = 0x67452301;
m_state[1] = 0xEFCDAB89;
m_state[2] = 0x98BADCFE;
m_state[3] = 0x10325476;
}
protected override void SetResult (uint[] data)
{
data[0] = m_state[0];
data[1] = m_state[1];
data[2] = m_state[2];
data[3] = m_state[3];
}
}
public class Md5Aoi : MD5
{
protected override void InitState ()