pspssh 0.3.0 — a random source

Sessions now have something to be built from.

On hardware every connection died with wolfSSH session could not be created. Asking the RNG directly named it: wc_InitRng gave RNG_FAILURE_E (-199). A PSP has no /dev/urandom and no hardware random number generator, so wolfSSL had nothing to seed from and no session could be created at all.

src/psp/entropy.c harvests timing jitter — a small unpredictable amount of work measured against the microsecond clock, hundreds of times, hashed into a SHA-256 pool with per-boot values, output ratcheted forward.

It is deliberately not called a random number generator, and it refuses rather than guesses: it counts how often the timing actually changed and fails if the clock does not jitter. A pool seeded with nothing still produces bytes that look fine, and those would be a guessable session key.

wolfSSL also warned that timing resistance was off, so both builds now use --enable-harden.

Same install as before — EBOOT.PBP into ef0:/PSP/GAME/pspssh/. Your pspssh.cfg is not overwritten.