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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
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(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
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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
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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.
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I need this Key very bad so there must be a way.
MrLampe
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12-22-2019, 05:49 PM
(This post was last modified: 12-22-2019, 05:50 PM by 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
Posts: 2,301
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Is it possible to attempt to crack this with hashcat? yes
Is it possible to test even a reasonably sized subset of the keyspace with hashcat? no