Each cipher module's random() now returns a thread-local Random that is
created on first use and reused thereafter. Each thread gets its own
OS-seeded generator (own key+nonce), so no locking and no cross-thread
nonce collisions. random_key() and random_nonce() draw from this CSPRNG
instead of secrets.token_bytes, making them as fast as the stream.
Changes made in the aegis256x4.py template and regenerated.
Implement Python bindings for the libaegis 0.10.6 RAF API:
- Thin per-variant wrappers (raf_create/open/read/write/truncate/size/
sync/close, merkle_rebuild/verify/commitment) generated from a template
in tools/generate.py, with errno-mapped exceptions.
- aeg.raf: high-level file-like API (Raf, create/open/probe,
derive_master_key) with pluggable Storage backends (FileStorage,
BytesIOStorage) and Merkle tree integrity via a MerkleHasher protocol
(SHA256MerkleHasher default), adapted from pyaegis (MIT).
- aeg.random: CSPRNG facility. Random produces AEGIS keystream seeded
once from the OS, exposed per cipher module as cipher.random() and
usable as the RAF RNG (as_raf_rng) or standalone RandomSource.
- Tests: roundtrip/random-access/seek/truncate/Merkle coverage for all
six variants, pyaegis-style API checks, and a Merkle fuzz test.
LeoVasanko