mirage-crypto-rng

A cryptographically secure PRNG
README

v0.10.7

mirage-crypto is a small cryptographic library that puts emphasis on the
applicative style and ease of use. It includes basic ciphers (AES, 3DES, RC4,
ChaCha20/Poly1305), hashes (MD5, SHA1, SHA2 family), AEAD primitives (AES-GCM,
AES-CCM), public-key primitives (RSA, DSA, DH) and a strong RNG (Fortuna).

RSA timing attacks are countered by blinding. AES timing attacks are avoided by
delegating to AES-NI.

Mirage-crypto is a fork of the
ocaml-nocrypto written by David
Kaloper. It was forked with the permission of the original author in order to
facilitate changes (e.g. build system) required by Mirage that the upstream
didn't have time to keep up with.

Mirage-crypto-rng embeds the former mirage-entropy opam package, which
implements various entropy sources:

  • non-deterministic execution time (used at initial seeding, see the whirlwind RNG paper)

  • a hook into the Lwt event loop that collects a timestamp of each event

  • rdseed and rdrand (x86/x86-64 only)

API documentation online

Build

dune build
dune runtest

FAQ

RNG seeding

If RNG fails with Fatal error: exception Unseeded_generator, you need to
seed it.

Lwt:

let () = Mirage_crypto_rng_lwt.initialize ()

Unix:

let () = Mirage_crypto_rng_unix.initialize ()
Install
Published
14 Sep 2022
Sources
mirage-crypto-0.10.7.tbz
sha256=3e818a760c235c5b684c7b6b43b1cdd2a7dd04e0105b680d524f836eb988a69c
sha512=e9c3e6ac0fa3dae2dda9e91d5362ad08aaa65241b968a0c12484db4042146d6af7b46910784ce41bdd68783eede93f35a81aa37a2cd125dfc43503c78007b8b9
Dependencies
lwt
>= "4.0.0"
mtime
>= "1.0.0"
randomconv
with-test & >= "0.1.3"
ounit2
with-test
mirage-crypto
= version
cstruct
>= "6.0.0"
dune
>= "2.6"
ocaml
>= "4.08.0"
Reverse Dependencies