View source for Anno 1701 RDA

{{GRAFTemplate1|
file_extension=*.rda|
format_type=Archive|
endian_order=Little Endian|
date_posted=22:10, January 7, 2007|
format_specifications=
<tt>
<b>
{{InlineComment|//header}}<br>
Char {26}&nbsp;&nbsp;&nbsp; - header {{Constant|("Crypted Resource File V1.1")}}<br> 
byte {230}&nbsp;&nbsp; - reserved<br>
uint32 {4}&nbsp;&nbsp; - number of files<br>
{{InlineComment|//dictionary}}<br>
Char {256}&nbsp;&nbsp; - filename<br>
uint32 {4}&nbsp;&nbsp; - file offset<br>
uint32 {4}&nbsp;&nbsp; - file size {{InlineComment|(compressed)}}<br>
uint32 {4}&nbsp;&nbsp; - file size {{InlineComment|(decompressed)}}<br>
uint32 (4)&nbsp;&nbsp; - compression flag {{InlineComment|(7:compressed)}}<br>
uint32 {4}&nbsp;&nbsp; - timestamp<br>
{{InlineComment|//data}}<br>
byte {x}&nbsp;&nbsp;&nbsp;&nbsp; - files<br>
</b></tt>|
notes=Das Archiv enthÃƒÂ¤lt komprimierte(deflate) und unkomprimierte Daten,<br>
Kopf und Verzeichnis sind einzeln verschlÃƒÂ¼sselt. Hier der Algorithmus:<br>
(anzahl ist die GrÃƒÂ¶ÃƒÅ¸e des Blocks durch 2, also fÃƒÂ¼r den Kopf = 130)<br>
English:
The archive contains compressed(deflate) and uncompressed data, <br>
header and dictionary are separately encrypted. Here is the algorithm: <br>
(anzahl is the size of the block divided by 2, for the head = 130)<br>

mov ebx, puffer<br>
mov ecx,0<br>
mov x,0xA2C2A<br>
start:<br>
mov eax,x<br>
imul eax,eax,0x343FD<br>
add eax,0x269EC3<br>
mov x,eax<br>
shr eax,0x10<br>
and eax,0x7FFF<br>
mov ebx, ecx<br>
shl ebx, 1<br>
add ebx, puffer<br>
xor word ptr [ebx], ax<br>
inc ecx<br>
cmp ecx, anzahl<br>
jb start|
bms_script=Not written yet|
programs=AnnoEx (available [http://www.gameformats.de.vu here])|
documentation=None|
games=Anno 1701
}}


[[Category:XOR encryption]]
[[Category:File Format]]