package mirage-crypto-rng

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A cryptographically secure PRNG

Install

dune-project

Dependency

github.com Readme Changelog BSD-2-Clause License Edit opam file Versions (12)

Authors

Maintainers

H

Hannes Mehnert <hannes@mehnert.org>

Sources

mirage-crypto-2.4.0.tbz

sha256=cd215ea3267a22ae7d910590f4f7ed82d2dc575206191f5bba9b49bb9240b5db

sha512=378b9ae826212471c4820636fa0be27a33013ecf801ba7202fbf0bbf8ac20b1072f782d34b868e5491616ef93bd7c0ec81f9705f7afd287b2ac595a913d32401

doc/mirage-crypto-rng.unix/Mirage_crypto_rng_unix/Getentropy/index.html

Module `Mirage_crypto_rng_unix.Getentropy`Source

A generator using getrandom(3) on Linux, getentropy(3) on BSD and macOS, and BCryptGenRandom() on Windows.

Sourcetype g

State type for this generator.

Sourceval block : int

Internally, this generator's generate always produces k * block bytes.

Sourceval create : ?time:(unit -> int64) -> unit -> g

Create a new, unseeded g.

Sourceval generate_into : g:g -> bytes -> off:int -> int -> unit

generate_into ~g buf ~off n produces n uniformly distributed random bytes into buf at offset off, updating the state of g.

Assumes that buf is at least off + n bytes long. Also assumes that off and n are positive integers. Caution: do not use in your application, use Mirage_crypto_rng.generate_into instead.

alert unsafe Does not do bounds checks. Use Mirage_crypto_rng.generate_into instead.

Sourceval reseed : g:g -> string -> unit

reseed ~g bytes directly updates g. Its new state depends both on bytes and the previous state.

A generator is seded after a single application of reseed.

Source

val accumulate : 
  g:g ->
  Mirage_crypto_rng.Entropy.source ->
  [ `Acc of string -> unit ]

accumulate ~g is a closure suitable for incrementally feeding small amounts of environmentally sourced entropy into g.

Its operation should be fast enough for repeated calling from e.g. event loops. Systems with several distinct, stable entropy sources should use stable source to distinguish their sources.

Sourceval seeded : g:g -> bool

seeded ~g is true iff operations won't throw Unseeded_generator.

Sourceval pools : int

pools is the amount of pools if any.