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Crypto (#19): add the OS cryptographically-secure random surface (random_bytes/random_hex/random_u32, reading /dev/urandom) and a standard base64 encoder, completing the library alongside the existing SHA-256/ HMAC-SHA256/verify_hmac/hex/ct_equal. All pure integer IR, C-free. Uuid (#16): a new namespace for stable, collision-free IDs — v4 (random) and v7 (time-ordered) generation, plus parse/is_valid/to_text/equals/nil. UUIDs are canonical lowercase 36-char strings; v4 and v7's random tail draw from the crypto CSPRNG, so both carry the documented determinism caveat (mint at the edges, never inside lockstep simulation). Reuses the crypto prelude's fn_secure_bytes / fn_hex_encode. - examples/library/{crypto,uuid}.ludic: known-answer vectors (SHA-256, HMAC, base64 per RFC 4231/4648) and structural invariants (uuid version/variant bits, parse/equals), wired into `x test` (now 51 passed). - docs: per-symbol pages for every new method + a new Uuid section; inventory and impl-vs-docs coverage check pass. - seed regenerated; `x bootstrap-cfree` fixpoint holds. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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| id | name | category | kind | tokens | sig | tip | order | ns | member |
|---|---|---|---|---|---|---|---|---|---|
| uuid-new | Uuid.new | uuid | namespace-method | Uuid.new | Uuid.new() -> string | A new random (v4) UUID as a canonical 36-char string. | 1 | Uuid | new |
Generates a new v4 (random) UUID and returns it in canonical lowercase text form, e.g. 550e8400-e29b-41d4-a716-446655440000. A v4 UUID carries 122 bits of entropy drawn from the OS secure random generator, so two independently-generated IDs colliding is not something you will ever observe in practice — which is exactly what makes it a good identity for a player, a session, a networked entity, or a piece of user-created content that has no central authority to number it.
This is the default UUID constructor; Uuid.v4 is an explicit alias. Because the value is random it is non-deterministic — do not mint UUIDs inside the lockstep simulation, or replays and peers will diverge.
program NewId {
entry {
let id = Uuid.new()
print(len(id)) # 36
}
}