Yes, that’s exactly the problem - there’s nothing wrong with the encryption used, but it’s IMHO incorrect to call it time-based when it’s “work-based” and it just so happens that the specific computer doing the encryption works at a given speed.
I don’t call my laptop’s FDE time-based encryption just because I picked an encryption that takes it 10 seconds to decrypt the key.
What is the threat szenario?
If you are smart about parallelization and have access to custom hardware, couldn’t you turn 5 days into 1 hour or less?
Yes, that’s exactly the problem - there’s nothing wrong with the encryption used, but it’s IMHO incorrect to call it time-based when it’s “work-based” and it just so happens that the specific computer doing the encryption works at a given speed.
I don’t call my laptop’s FDE time-based encryption just because I picked an encryption that takes it 10 seconds to decrypt the key.