Brute-Force Compute Estimates
Commenters calculate and debate the computational time, hardware resources like CPUs/GPUs/clusters, and feasibility of brute-forcing large spaces such as hashing billions of phone numbers or cryptographic operations on personal vs massive compute.
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Out of curiosity, how much more time will it cost to run this on general CPUs of users computer?
So it only needs 4 Billion times 90s, so is this like never in a million years? (actually it should be only around 12000 year, so you could use a cluster of 48000 Computer and be done in 3 month)
no, 2 hours of addition on my cellphone at 2 gigahertz, 4 cores, and conservatively 3 additions per core per cycle would be 170 trillion additionsnobody needs 170 trillion additions for their nightly invoices
My naive assumption would be, takes 2^36 cpu operations
How long does a hash take on a modern PC?
How much compute was ultimately required to get this done?
still a more efficient algo would be better run on gigawatts of compute
Go and calculate how much time would it take to hash every 9-11 digit number...
Are you ready to test all the 2^128 possible multiplications your CPU can do?
There are only about 3 billion valid US phone numbers. How many hashes can your GPU compute per second?