OCaml cryptographic library
OCaml C
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Build Status


Comments in the single interface file, nocrypto.mli. Also available online.

The documentation is a work in progress. :)


pkg/pkg.ml build
  --with-unix BOOL
  --with-lwt BOOL
  --xen BOOL
  --freestanding BOOL

pkg/pkg.ml test


RNG seeding

You get something like Fatal error: exception Uncommon.Boot.Unseeded_generator and ask yourself: "Is there a simple way to forget about seeding and have the thing working?"

(* On pure Unix: *)
let () = Nocrypto_entropy_unix.initialize ()

(* On Lwt/Unix: *)
let () = ignore @@ Nocrypto_entropy_lwt.initialize ()

Illegal instructions

Anything linking to Nocrypto dies immediately:

Program terminated with signal SIGILL, Illegal instruction.
#0  _mm_aeskeygenassist_si128 (__C=<optimized out>, __X=...)

Nocrypto has CPU acceleration support (SSE2+AES-NI), but it has no run-time autodetection yet. You compiled the library with acceleration, but you are using it on a machine that does not support it.

pkg/pkg.ml build --accelerate false force-disables non-portable code.

pkg/pkg.ml build --accelerate true force-enables non-portable code.

The flag can also be set via the NOCRYPTO_ACCELERATE environment variable. If unset, it maches the capabilities of the build machine.