Question about sha256 and AMD kernels
#1
Hi,

my brain got stuck, even after reading wiki (or is it just "that day")

so ...

i have some sha256 hash to crack ... an example (random example) :

sha256 hash
dbb12ceaf87ceaf87ceaf87ceaf87ceaf8751e29a0257751e29751e29751e291

pasword
21 90 12 12 12 12 4A 21 00 00 00 00 00 00 00 00  - last 8 bytes is always 00

so ...the question is ... how to combine mask attack on this (which range from 0x00 to 0xFF),
since password result have last 8 bytes always 0x00 ? (characters = 0-9, A-F , last 8 bytes can be truncated)

(yeah, you will say - it's simple ... i just cant figure it out at the moment)



and the second question is ...

how to maximise performance of this cracking on AMD RX580 GPU,
Windows7, latest Adrenalin 21.5.2 installed.

Do i need some additional parameters ?
Do i need some other (by Hashcat recommended) drivers ?


Thanks for reading this (and hopefully helping),
and sorry for (maybe for you)  trivial questions.

b.r.
Alex
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Messages In This Thread
Question about sha256 and AMD kernels - by alexxx - 09-06-2021, 08:01 PM