Had to crack some DES hashes and because GPU station was not available, decided to try them with my laptop CPU (Intel(R) Core(TM) i7-8550U CPU, 4 cores). I was surprized by the speed of modern laptop CPU.
i7-8550U CPU, 4 core benchmark:
Benchmarking: descrypt, traditional crypt(3) [DES 256/256 AVX2]... (8xOMP) PASS DONE Many salts: 37847K c/s real, 4790K c/s virtual Only one salt: 25296K c/s real, 3186K c/s virtual
Should we try AWS also ?
I choose new m5.metal and g3.16xlarge instances
|Instance Name||Sustained All-Core Turbo||Logical Processors||Memory||Local Storage||EBS-Optimized Bandwidth||Network Bandwidth||Price|
|m5.metal||Up to 3.1 GHz||96||384 GiB||–||14 Gbps||25 Gbps||$4.608|
AWS m5.metal 96 vcpu core benchmark:
Benchmarking: descrypt, traditional crypt(3) [DES 512/512 AVX512F]... (96xOMP) PASS DONE Many salts: 611057K c/s real, 6383K c/s virtual Only one salt: 50611K c/s real, 536841 c/s virtual
Htop was pleasant to look at:
|Model||GPUs||vCPU||Mem (GiB)||GPU Memory (GiB)||Network Performance||Price|
AWS g3.16xlarge 4 gpu core benchmark:
Device 1: Tesla M60 Benchmarking: descrypt-opencl, traditional crypt(3) [DES OpenCL]... DONE Note: This format may also be benchmarked using --mask (see doc/MASK). Many salts: 1439K c/s real, 22562 c/s virtual Only one salt: 1798K c/s real, 28109 c/s virtual
John refused to run test with multiple GPU’s, take result above and multiply it with 4.
Cracking with GPU also failed at the end, so use hashcat or m5.metal instance, when hashcat is not an option.