Keygener Assistant 1.7 problem

Git · #1 12-26-2011, 21:09

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 :

Code:

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