2026-10-07 16:35 UTC
@zwarich@hachyderm.io @fay59@tech.lgbt i was going to shitpost about how this is why x86 is actually more secure, since you can just use REP STOSB and/or memory operands to keep your secret out of architectural state
Replies (1)
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@zwarich@hachyderm.io 2026-10-07 16:40
@joe@f.duriansoftware.com @fay59@tech.lgbt I think CPUs should have string instructions from clearing, copying, comparing, and hashing memory (with a few different kinds of hash functions for the latter, e.g. checksum, hash table hash, and cryptographic hashes). CPU microarchitects generally don't like this for a number of reasons, but we must find a way.