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(NS2): use different encryption for keys shorter than 96 bytes.

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This commit is contained in:
morkt 2016-09-29 11:30:01 +04:00
parent 0134583782
commit 37023024b7
2 changed files with 21 additions and 7 deletions
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16
ArcFormats/NScripter/ArcNS2.cs
View File

@ -75,10 +75,8 @@ namespace GameRes.Formats.NScripter
if (string.IsNullOrEmpty (password))
return null;
var key = Encoding.ASCII.GetBytes (password);
if (key.Length < 96)
throw new OperationCanceledException ("Password should be at least 96 characters long");
using (var input = new Ns2Stream (file, key))
using (var input = OpenEncryptedStream (file, key))
{
dir = ReadIndex (input);
if (null == dir)
@ -132,10 +130,18 @@ namespace GameRes.Formats.NScripter
{
return arc.File.CreateStream (entry.Offset, entry.Size);
}
var encrypted = new Ns2Stream (arc.File, nsa_arc.Key);
var encrypted = OpenEncryptedStream (arc.File, nsa_arc.Key);
return new StreamRegion (encrypted, entry.Offset, entry.Size);
}
Stream OpenEncryptedStream (ArcView file, byte[] key)
{
if (key.Length < 96)
return new EncryptedViewStream (file, key);
else
return new Ns2Stream (file, key);
}
private string QueryPassword ()
{
var options = Query<NsaOptions> (arcStrings.ArcEncryptedNotice);
@ -165,7 +171,7 @@ namespace GameRes.Formats.NScripter
{
byte[] m_key;
static readonly Cryptography.MD5 MD5 = new Cryptography.MD5();
readonly Cryptography.MD5 MD5 = new Cryptography.MD5();
const int BlockSize = 32;

12
supported.html
View File

@ -71,6 +71,7 @@ Eiyuu x Maou<br/>
Wasurenagusa ~Forget-me-Not~<br/>
</td></tr>
<tr class="odd"><td>*.gsp</td><td>-</td><td>No</td><td rowspan="2">GSD</td><td rowspan="2">
Asanagi no Aquanauts<br/>
I Cup Bonyuu Kangofu<br/>
Natsuiro ☆ Communication ♪<br/>
Saimin Gakuen<br/>
@ -176,6 +177,8 @@ Ren'ai Jugyou ~Oshiego no Yuuwaku~<br/>
<tr class="odd"><td>*.nsa<br/>*.sar</td><td>-</td><td>Yes<a href="#note-1" class="footnote">1</a></td><td>NScripter</td><td>
Binary Pot<br/>
Chou Gedou Yuusha<br/>
Shinshoku ~Inma no Ikenie~<br/>
Shinshoku 2 ~Inma no Ikenie~<br/>
Tsukihime<br/>
Umineko<br/>
</td></tr>
@ -490,6 +493,7 @@ Tsurugi Otome Noah<br/>
<tr><td>*.pmp<br/>*.pmw</td><td>-</td><td>Yes</td><td>ScenePlayer</td><td>
Eraburu ~Erabu + Love x Double de~<br/>
Nyuujoku Hitozuma Jogakuen<br/>
WW&F ~Taishou Teito Denkitan~<br/>
</td></tr>
<tr class="odd"><td>*.dat</td><td><tt>GAMEDAT PACK</tt><br/><tt>GAMEDAT PAC2</tt></td><td>No</td><td rowspan="2"> bootUP!<br/>Pajamas Soft<br/>Aries</td><td rowspan="2">
Aneimo 2 ~Second Stage~<br/>
@ -732,9 +736,10 @@ Majiresu!! ~Omatase Little Wing~<br/>
</td></tr>
<tr class="last"><td>*.arg<br/>*.argb</td><td><tt>BGRA</tt></td><td>No</td></tr>
<tr class="odd"><td>*.pac</td><td><tt>PACK</tt></td><td>No</td><td rowspan="2">Emic</td><td rowspan="2">
Chikan Densha Otoko ~Densetsu no Target~<br/>
Futamajo<br/>
</td></tr>
<tr class="odd last"><td>*.bmp</td><td><tt>MWP</tt></td><td>No</td></tr>
<tr class="odd last"><td>*.bmp</td><td><tt>MWP</tt><br/><tt>TEYL</tt></td><td>No</td></tr>
<tr><td>*.dat+*l.dat</td><td>-<br/><tt>GLNK</tt></td><td>No</td><td>Studio Miris<br/>Caligula</td><td>
Itadaki Jangarian<br/>
Tetsuwan Gacchu!<br/>
@ -862,6 +867,7 @@ Gakuen Saimin Reido<br/>
</td></tr>
<tr class="odd last"><td>*.akb</td><td><tt>AKB</tt></td><td>No</td></tr>
<tr><td>*.cpz</td><td><tt>CPZ5</tt><br/><tt>CPZ6</tt></td><td>No</td><td rowspan="2">CMVS</td><td rowspan="2">
Amatsutsumi<br/>
Chrono Clock<br/>
Hapymaher<br/>
Haruiro Ouse<br/>
@ -1093,8 +1099,10 @@ Denpa no Dorei<br/>
Soushinjutsu Plus<br/>
Soushinjutsu 2<br/>
</td></tr>
<tr><td>*.ns2</td><td>-</td><td>No</td><td>NScripter</td><td>
<tr><td>*.ns2</td><td>-</td><td>No</td><td>NScripter2</td><td>
Rakuin Hime Runed Princess<br/>
Shinshoku -Zero- ~Inma no Ikenie~<br/>
Shinshoku 3 ~Inma no Ikenie~<br/>
</td></tr>
<tr class="odd"><td>*.dat</td><td>-</td><td>No</td><td>NekoSDK</td><td>
Elevator Panic ~Misshitsu no Inkou~<br/>