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(ShiinaRio): Added Ushimitsu2Crypt

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Crsky
2025-09-28 01:37:54 +08:00
parent 86eea913e1
commit 57ceb5794b
1 changed files with 39 additions and 0 deletions
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39
ArcFormats/ShiinaRio/WarcEncryption.cs
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@@ -1316,4 +1316,43 @@ namespace GameRes.Formats.ShiinaRio
}
}
}
[Serializable]
public class Ushimitsu2Crypt : IDecryptExtra
{
public void Decrypt (byte[] data, int index, uint length, uint flags)
{
byte[] key = new byte[]
{
0x4B, 0x4D, 0x36, 0x35, 0x33, 0x32, 0x20, 0x43,
0x50, 0x55, 0x20, 0x63, 0x6F, 0x72, 0x65, 0x20,
0x65, 0x6D, 0x75, 0x6C, 0x61, 0x74, 0x69, 0x6F,
0x6E, 0x20, 0x3A, 0x20, 0x43, 0x6F, 0x70, 0x79,
0x72, 0x69, 0x67, 0x68, 0x74, 0x28, 0x43, 0x29,
0x20, 0x32, 0x30, 0x30, 0x35, 0x2C, 0x36, 0x20,
0x59, 0x2E, 0x59, 0x61, 0x6D, 0x61, 0x64, 0x61,
0x2F, 0x53, 0x54, 0x55, 0x44, 0x49, 0x4F, 0x20,
0x82, 0xE6, 0x82, 0xB5, 0x82, 0xAD, 0x82, 0xF1
};
if (length >= 0x200)
{
if ((flags & 0x202) == 0x202)
{
for (int i = 0; i < ((length & 0x7E) | 1); i++)
{
data[index+i] ^= key[i % 0x40];
}
var value = MemoryMarshal.Read<uint> (data.AsSpan (index+0x100));
value ^= length;
MemoryMarshal.Write<uint> (data.AsSpan (index+0x100), ref value);
}
}
}
public void Encrypt (byte[] data, int index, uint length, uint flags)
{
throw new NotImplementedException ();
}
}
}