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(Cmvs): another encryption scheme.

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morkt
2016-10-11 01:35:36 +04:00
parent a648aff032
commit 010384fbfa
2 changed files with 27 additions and 3 deletions
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24
ArcFormats/Cmvs/CmvsMD5.cs
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@@ -2,7 +2,7 @@
//! \date Mon Nov 30 13:29:27 2015
//! \brief Cmvs engine MD5 update algorithm.
//
// Copyright (C) 2015 by morkt
// Copyright (C) 2015-2016 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
@@ -27,7 +27,7 @@ using GameRes.Utility;
namespace GameRes.Formats.Cmvs
{
public enum Md5Variant { A, B, Chrono, Memoria }
public enum Md5Variant { A, B, Chrono, Memoria, Natsu }
public abstract class MD5 : Cryptography.MD5Base
{
@@ -44,6 +44,7 @@ namespace GameRes.Formats.Cmvs
case Md5Variant.B: return new Md5VariantB();
case Md5Variant.Chrono: return new Md5Chrono();
case Md5Variant.Memoria: return new Md5Memoria();
case Md5Variant.Natsu: return new Md5Natsu();
default: throw new System.ArgumentException ("Unknown MD5 variant", "variant");
}
}
@@ -131,4 +132,23 @@ namespace GameRes.Formats.Cmvs
data[3] = m_state[0];
}
}
public class Md5Natsu : MD5
{
protected override void InitState ()
{
m_state[0] = 0x63FE9A7C;
m_state[1] = 0xC2B93E98;
m_state[2] = 0xEF91BA5C;
m_state[3] = 0x72C9A82E;
}
protected override void SetResult (uint[] data)
{
data[0] = m_state[1] + 0x45876329;
data[1] = m_state[2] ^ 0x54F36D6C;
data[2] = m_state[3] + 0x4387A749;
data[3] = m_state[0] ^ 0xE3F9A742;
}
}
}