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updated ShiinaRio encryption schemes.
This commit is contained in:
morkt
parent
5dfdf5f4d0
commit
d64949da56
@ -582,25 +582,50 @@ namespace GameRes.Formats.ShiinaRio
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}
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[Serializable]
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public abstract class KeyDecryptExtra : IDecryptExtra
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public abstract class KeyDecryptBase : IDecryptExtra
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{
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readonly uint Key;
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readonly byte[] DecodeTable;
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protected readonly uint Seed;
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protected readonly byte[] DecodeTable;
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protected uint MinLength = 0x400;
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public KeyDecryptExtra (uint key, byte[] decode_bin)
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public KeyDecryptBase (uint seed, byte[] decode_bin)
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{
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Key = key;
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Seed = seed;
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DecodeTable = decode_bin;
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}
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public void Decrypt (byte[] data, int index, uint length, uint flags)
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{
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if (length < 0x400)
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if (length < MinLength)
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return;
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if ((flags & 0x202) == 0x202)
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DecryptPre (data, index, length);
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if ((flags & 0x204) == 0x204)
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DecryptPost (data, index, length);
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}
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protected abstract void DecryptPre (byte[] data, int index, uint length);
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protected virtual void DecryptPost (byte[] data, int index, uint length)
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{
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data[index + 0x200] ^= (byte)Seed;
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data[index + 0x201] ^= (byte)(Seed >> 8);
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data[index + 0x202] ^= (byte)(Seed >> 16);
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data[index + 0x203] ^= (byte)(Seed >> 24);
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}
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}
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[Serializable]
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public abstract class KeyDecryptExtra : KeyDecryptBase
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{
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public KeyDecryptExtra (uint seed, byte[] decode_bin) : base (seed, decode_bin)
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{
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}
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protected override void DecryptPre (byte[] data, int index, uint length)
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{
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var k = new uint[4];
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InitKey (Key, k);
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InitKey (Seed, k);
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for (int i = 0; i < 0xFF; ++i)
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{
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uint j = k[3] ^ (k[3] << 11) ^ k[0] ^ ((k[3] ^ (k[3] << 11) ^ (k[0] >> 11)) >> 8);
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@ -611,14 +636,6 @@ namespace GameRes.Formats.ShiinaRio
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data[index + i] ^= DecodeTable[j % DecodeTable.Length];
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}
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}
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if ((flags & 0x204) == 0x204)
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{
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data[index + 0x200] ^= (byte)Key;
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data[index + 0x201] ^= (byte)(Key >> 8);
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data[index + 0x202] ^= (byte)(Key >> 16);
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data[index + 0x203] ^= (byte)(Key >> 24);
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}
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}
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protected abstract void InitKey (uint key, uint[] k);
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}
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@ -656,27 +673,64 @@ namespace GameRes.Formats.ShiinaRio
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}
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[Serializable]
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public class UnknownCrypt : IDecryptExtra
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public class MakiFesCrypt : KeyDecryptBase
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{
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public MakiFesCrypt (uint seed, byte[] key) : base (seed, key)
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{
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}
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protected override void DecryptPre (byte[] data, int index, uint length)
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{
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uint k = Seed;
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for (int i = 0; i < 0x100; ++i)
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{
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k = 0x343FD * k + 0x269EC3;
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data[index+i] ^= DecodeTable[((int)(k >> 16) & 0x7FFF) % DecodeTable.Length];
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}
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}
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}
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[Serializable]
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public class MajimeCrypt : IDecryptExtra
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{
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public void Decrypt (byte[] data, int index, uint length, uint flags)
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{
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if (length < 0x200)
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return;
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if ((flags & 0x202) == 0x202)
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{
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int sum = 0;
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int bit = 0;
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byte v;
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for (int i = 0; i < 0x100; ++i)
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{
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v = data[index+i];
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sum += v >> 1;
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data[index+i] = (byte)(v >> 1 | bit);
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bit = v << 7;
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}
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data[index] |= (byte)bit;
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data[index + 0x104] ^= (byte)sum;
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data[index + 0x105] ^= (byte)(sum >> 8);
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}
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}
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}
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[Serializable]
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public class AlcotCrypt : IDecryptExtra
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{
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public void Decrypt (byte[] data, int index, uint length, uint flags)
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{
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if (length < 0x400)
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return;
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int src = index;
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uint key = 0;
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for (uint i = (length & 0x7eu) + 1; i != 0; --i)
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if ((flags & 0x204) == 0x204)
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{
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key ^= data[src++];
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for (int j = 0; j < 8; ++j)
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{
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uint bit = key & 1;
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key = bit << 15 | key >> 1;
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if (0 == bit)
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key ^= 0x408;
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var crc16 = new Kogado.Crc16();
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crc16.Update (data, index, (int)length & 0x7E | 1);
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var sum = crc16.Value ^ 0xFFFF;
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data[index + 0x104] ^= (byte)sum;
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data[index + 0x105] ^= (byte)(sum >> 8);
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}
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}
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data[index+0x104] ^= (byte)key;
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data[index+0x105] ^= (byte)(key >> 8);
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}
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}
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}
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Binary file not shown.
@ -102,6 +102,7 @@ Okaa-san ga Ippai!<br/>
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Chikan Ou ~Inkoku no Souzousha~<br/>
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Daisaimin Rankou Gakuen<br/>
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Haitoku no Gakuen ~Yami ni Sasagerareta Otome-tachi~<br/>
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Haitoku no Gakuen 2 ~Yami o Tsugu Mono~<br/>
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Injoku Shinryuu Club<br/>
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Moon.<br/>
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Ryoujoku Famiresu Choukyou Menu<br/>
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@ -367,6 +368,7 @@ Touka Gettan<br/>
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</td></tr>
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<tr class="odd"><td>*</td><td><tt>\x00\x00\x04\x00</tt></td><td>No</td></tr>
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<tr><td>*.war</td><td><tt>WARC 1.7</tt><br/><tt>WARC 1.5</tt><br/><tt>WARC 1.3</tt></td><td>No</td><td rowspan="5">Shiina Rio</td><td rowspan="5">
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Aneiro <span class="footnote">ShiinaRio v2.49</span><br/>
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Can Fes! ~Itazura Majo to Naisho no Gakuensai~ <span class="footnote">ShiinaRio v2.47</span><br/>
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Chikan Circle <span class="footnote">ShiinaRio v2.46</span><br/>
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Chikan Circle 2 <span class="footnote">ShiinaRio v2.47</span><br/>
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@ -374,11 +376,13 @@ Chuuchuu Nurse <span class="footnote">ShiinaRio v2.45</span><br/>
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Classmate no Okaa-san <span class="footnote">ShiinaRio v2.37</span><br/>
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Draculius <span class="footnote">ShiinaRio v2.38</span><br/>
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Enkaku Sousa <span class="footnote">2.36 or 2.37</span><br/>
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Gohoushi Nurse ~Mayonaka no Kyousei Call~ <span class="footnote">ShiinaRio v2.50</span><br/>
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Helter Skelter <span class="footnote">ShiinaRio v2.40</span><br/>
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Hitozuma Onna Kyoushi Reika <span class="footnote">ShiinaRio v2.39</span><br/>
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Itsuka, Dokoka de ~Ano Ameoto no Kioku~<span class="footnote">2.36 or 2.37</span><br/>
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Kichiku Nakadashi Suieibu<span class="footnote">ShiinaRio v2.41</span><br/>
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Mahou Shoujo no Taisetsu na Koto <span class="footnote">ShiinaRio v2.47</span><br/>
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Maki Fes! <span class="footnote">ShiinaRio v2.50</span><br/>
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Nagagutsu wo Haita Deco <span class="footnote">ShiinaRio v2.39</span><br/>
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Najimi no Oba-chan <span class="footnote">ShiinaRio v2.47</span><br/>
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Niizuma to Yuukaihan <span class="footnote">ShiinaRio v2.45</span><br/>
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@ -386,9 +390,12 @@ Otome Chibaku Yuugi <span class="footnote">ShiinaRio v2.40</span><br/>
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Otome Juurin Yuugi <span class="footnote">ShiinaRio v2.37</span><br/>
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Ran→Sem <span class="footnote">ShiinaRio v2.47</span><br/>
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Rin×Sen <span class="footnote">ShiinaRio v2.47</span><br/>
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Shinigami no Testament <span class="footnote">ShiinaRio v2.49</span><br/>
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Shojo Mama<span class="footnote">ShiinaRio v2.49</span><br/>
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Tantei Shounen A<span class="footnote">some old version, like 2.twenty-something</span><br/>
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Tekoire Princess!<span class="footnote">ShiinaRio v2.37</span><br/>
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Wana ~Hakudaku Mamire no Houkago~<span class="footnote">ShiinaRio v2.36</span><br/>
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Wana II ~Gang Rape~<span class="footnote">ShiinaRio v2.44</span><br/>
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Yoyogi Hitozuma Senmon Gakuin<span class="footnote">ShiinaRio v2.37</span><br/>
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Zansho Omimai Moushiagemasu<span class="footnote">ShiinaRio v2.41</span><br/>
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</td></tr>
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@ -431,6 +438,7 @@ Shuffle! Essence+<br/>
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Clover Heart's<br/>
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Geki Tama! ~Seiryou Gakuen Engeki Bu~<br/>
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Maria ~Tenshi no Kiss to Akuma no Hanayome~<br/>
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Marionette Zero<br/>
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Triptych<br/>
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Tsurugi Otome Noah<br/>
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</td></tr>
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