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Date: Sun, 12 Sep 2021 14:36:34 +0200
Subject: Re: brute forcing AES key


> On 12 Sep 2021, at 14:01, magnum <> wrote:
> I was mistaken, it's null bytes - and that's why my plaintext had the first block garbled.
>> I now opened for implementing this format.
> We now have formats ready to merge: After realizing my mistake with the iv, we now only need to decrypt the very first block and look for the constant plaintext of '[{"coinName"' right at its start.

Thank you very much for this work!

> AES isn't very GPU-friendly so the OpenCL version "only" pushes about 380Mp/s on a 2080ti.

It's good enough, currently my CPU yields to this:

$ OMP_NUM_THREADS=10 ./john --wordlist=/usr/local/share/john/rockyou.txt --rules=jumbo --session=crypto2 ../machin.cryptosafe 
0g 0:00:00:20 0.03% (ETA: 21:18:31) 0g/s 2877Kp/s 2877Kc/s 2877KC/s REALEZA1..jacobo,2
0g 0:00:02:52 0.19% (ETA: 2021-09-13 00:11) 0g/s 4198Kp/s 4198Kc/s 4198KC/s uniq22l..metallaki9l
0g 0:06:50:33 27.97% (ETA: 00:08:13) 0g/s 3442Kp/s 3442Kc/s 3442KC/s DeCEMBER28!(*%..VeLARODRi-1((^
0g 0:10:30:25 49.07% (ETA: 21:04:58) 0g/s 2415Kp/s 2415Kc/s 2415KC/s XTeaMOlUzmILaHX..ESpeCIaLgEniODJ
0g 0:13:29:03 66.66% (ETA: 19:53:56) 0g/s 1955Kp/s 1955Kc/s 1955KC/s jAna*39TEkoNDO5^..iLovEtoMSyDEnhAM
0g 0:14:49:47 74.66% (ETA: 19:32:00) 0g/s 1803Kp/s 1803Kc/s 1803KC/s 2@)(8@)7$8#68&((..1$!(9$MaYaBIDJaN

I'll try on GPU tomorrow (Nvidia 1080).

Thanks again

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