LZ00 compression/encryption

[Nick W]

Hello, I need some help with figuring out this compression format. The data appears to be using an LZ based compression format with encryption.

Here is what the header looks like:

Code: Select all

0x00 - 0x03 - Magic code "LZ00"
0x04 - 0x07 - Compressed filesize
0x10 - 0x2F - Filename for decompressed file
0x30 - 0x33 - Decompressed filesize
0x34 - 0x37 - Date that file was compressed on
0x40 - Start of compressed data

The date appears to be the encryption key or part of it, because similar files with the same date share some similar bytes in the file:
http://www.puyonexus.net/files/resource ... TAFF01.mrz
http://www.puyonexus.net/files/resource ... TAFF02.mrz
http://www.puyonexus.net/files/resource ... TAFF03.mrz

when the date is different; the data is completely different:
http://www.puyonexus.net/files/resource ... TAFF04.mrz

Also, here is the only compressed and uncompressed file pair I could find in the game.

[chrrox]

this tool can extract those decompressed archives.
http://forums.sonicretro.org/index.php? ... 12158&st=0
it may also be able to extract the compressed ones.
is this from puyo games?

[Nick W]

this tool can extract those decompressed archives.
http://forums.sonicretro.org/index.php? ... 12158&st=0
it may also be able to extract the compressed ones.
is this from puyo games?

That actually is my tool, so I can safely say it doesn't work with this compression format. And yes, it is from the Puyo games, Puyo Puyo Fever 2 to be exact.