4 ms·
Not via Linux, but via the IME that Intel puts on every CPU with full access to all memory and the network cards.
by SEJeff 9y ago
Not via Linux, but via the IME that Intel puts on every CPU with full access to all memory and the network cards.
- partycoder 9y agoOne source of entropy in Linux is the RDRND instruction. If you control or predict its output you can do a lot of harm.
- SEJeff 9y agoIt really depends on a lot of the software as well. Linux doesn't inherently trust just the CPU instructions for entropy. In fact, it recently borrowed a new feature from OpenBSD and added it called getrandom(): https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c6e9d6f38894798696f23c8084ca7edbf16ee895 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...