Keygener Assistant 1.7 problem

[Git]

Can anybody who is a member at www.at4re.com pass this to RobinHoodArab please.

AES encryption in keygener assistant V1.7 is sometimes producing incorrect encryption results. It will sometimes produce correct result on first run, then incorrect on next run.

Comparing to FIPS-197 standard test vectors :

Key: 000102030405060708090a0b0c0d0e0f
Plaintext: 00112233445566778899aabbccddeeff
Ciphertext: 69c4e0d86a7b0430d8cdb78070b4c55a
KA 1.7     : 04F6AA3FEB5CE4CD73BC9643D297743B

Key: 000102030405060708090a0b0c0d0e0f1011121314151617
Plaintext: 00112233445566778899aabbccddeeff
Ciphertext: dda97ca4864cdfe06eaf70a0ec0d7191
KA 1.7     : (no result)

Key: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
Plaintext: 00112233445566778899aabbccddeeff
Ciphertext: 8ea2b7ca516745bfeafc49904b496089 
KA 1.7     : (no result)

Maybe it is not using the correct number of Rounds which should be :
128bit key : 10
192bit key : 12
256bit key : 14 (maximum)

Also, encryption has to be done in 16byte blocks so maybe blocking routines are wrong. This app is a useful test base :
http://www.unsw.adfa.edu.au/~lpb/src/AEScalc/AEScalc.html

Git

[mm10121991]

OK , It will be passed

[Git]

Should also note that output length should be same as input length, and key length should alwys be 16, 24 or 32 bytes.

Git

[mm10121991]

the developper of keygenner assistant is Mr Paradox/at4re but he is retired from their team
they didn't respond.

[*RemedY*]

Git,

maybe you can give SnD Reverser Tool a try.
It has almost identical features and it works very well.

http://tuts4you.com/download.php?view.1923

The only shortcoming is it's GUI is not as userfriendly as that of Keygener Assistant but hey...

Regards
*RemedY*

I think Mr Paradox used a ready-made library to encode AES.

[Git]

Thanks Remedy, looks like a good tool.

H4X0r - AES isn't the problem I have AES code builtin to my app, I just wanted a few sources to check it again. They all agreed except KA.

Git

[Git]

Another problem with KG 1.7 after using for a few calcs.

BigCalc tab (set to base 10)

P : 2
Q : 163
Click on P to the power of Q (P^Q)
Result : 256
(should be 11692013098647223345629478661730264157247460343808)

Git

[mm10121991]

Check cryptokg.cjb.net you will find most of the tools you ever need. i think that ka is based on FGint lib so may be the bug is due to that lib

[Git]

It wasn't a complaint, it was a bug report

Git

[deepzero]

i dropped keygenner assistant a long time ago, lots of random bug and small mis calculations. I send a bunch of bug reports to at4re a long time ago, no response.

the problem is that the developer of this tool (Mr Paradox) left the reversing world .. No one has the source code of it to fix this bugs .. sorry!

[sendersu]

Its not up to sorry, but its up to killed much amount of time and at the end you are cool - becaue you know that the tool was buggy.....
Mabye its good idea to put a comment near download link "use with caution" ?
To same these hrs for another REversers

[Loki]

Originally Posted by *RemedY*

The only shortcoming is it's GUI is not as userfriendly as that of Keygener Assistant but hey...

Was written 2-3 years before KGA though and was only ever something for me to learn to code ASM a little better - started with a few routines and then me and Punk kept expanding it so the GUI isnt perfect.

Been considering making it open source if anyone wanted to learn from it, but the code isnt so great seeing as it was a learning piece.

[deepzero]

never mind, go ahead!