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two-key triple DES
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12-10-2019, 07:53 PM
Hey guys,
can hashcat help me with two-key triple DES (K1=K3) in any way? I know the PT and of course the CT but literally nothing about the key. Only it is 2 x 56 = 112 bits. Any help much appreciated. Thanks! MrLampe 
12-10-2019, 09:36 PM
(12-10-2019, 07:53 PM)MrLampe Wrote: Only it is 2 x 56 = 112 bits. I don't know what kind of hardware you have available but with my GPU (GTX 1060) bruteforcing 112 bit on DES 14000 would take about 1.6x10^16 years at 10 GH/s. >>> (2**112 / (10000 * 1000 * 1000)) / 60 / 60 / 24 / 365 1.6464665330209374e+16
12-12-2019, 09:14 PM
Hi,
thank you very much for your answer. I have possibilities to get my hands on HPC machines. But for the first step I need to evaluate my tools. :-) ATM I really don't understand the syntax for two key 3DES in hashcat. MrLampe
12-12-2019, 09:16 PM
My answer should have made you realise that no matter what hardware you have, there is no way you are going to crack a 112bit DES key.
12-12-2019, 09:39 PM
I need this Key very bad so there must be a way.
 MrLampe
Isn't this User asking the exact same question? https://hashcat.net/forum/thread-8808-po...l#pid46920
Seems like there is a possible solution? MrLampe |
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