QPQ-AG/enacl
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Use randombytes_uint32

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Better name. Says what you are getting.
This commit is contained in:
Jesper Louis Andersen 2020-01-15 14:05:25 +01:00
parent 3c8d54d87b
commit 97ee4bbdcf
4 changed files with 12 additions and 12 deletions
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2
CHANGELOG.md
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@ -6,7 +6,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html). and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
## [Unreleased] ## [Unreleased]
- Implement enacl:randombytes_int32/0. Returns a random 32bit unsigned - Implement enacl:randombytes_uint32/0. Returns a random 32bit unsigned
integer, by means of the underlying random source. integer, by means of the underlying random source.
- Implement enacl:randombytes_uniform/1. Takes up to a 32bit unsigned - Implement enacl:randombytes_uniform/1. Takes up to a 32bit unsigned
integer and produces a uniform integer in the range [0..N). Note integer and produces a uniform integer in the range [0..N). Note

8
c_src/enacl_nif.c
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@ -1029,8 +1029,8 @@ static ERL_NIF_TERM enif_randombytes(ErlNifEnv *env, int argc,
return enif_make_binary(env, &result); return enif_make_binary(env, &result);
} }
static ERL_NIF_TERM enif_randombytes_int32(ErlNifEnv *env, int argc, static ERL_NIF_TERM enif_randombytes_uint32(ErlNifEnv *env, int argc,
ERL_NIF_TERM const argv[]) { ERL_NIF_TERM const argv[]) {
ErlNifUInt64 result; ErlNifUInt64 result;
if (argc != 0) { if (argc != 0) {
@ -1770,8 +1770,8 @@ static ErlNifFunc nif_funcs[] = {
// main scheduler. Otherwise, it it would probably be fine to run on the // main scheduler. Otherwise, it it would probably be fine to run on the
// main scheduler. This plays it safe, albeit with a performance hit. // main scheduler. This plays it safe, albeit with a performance hit.
erl_nif_dirty_job_cpu_bound_macro("randombytes", 1, enif_randombytes), erl_nif_dirty_job_cpu_bound_macro("randombytes", 1, enif_randombytes),
erl_nif_dirty_job_cpu_bound_macro("randombytes_int32", 0, erl_nif_dirty_job_cpu_bound_macro("randombytes_uint32", 0,
enif_randombytes_int32), enif_randombytes_uint32),
erl_nif_dirty_job_cpu_bound_macro("randombytes_uniform", 1, erl_nif_dirty_job_cpu_bound_macro("randombytes_uniform", 1,
enif_randombytes_uniform), enif_randombytes_uniform),

10
src/enacl.erl
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@ -123,7 +123,7 @@
-export([ -export([
%% EQC %% EQC
randombytes/1, randombytes/1,
randombytes_int32/0, randombytes_uint32/0,
randombytes_uniform/1 randombytes_uniform/1
]). ]).
@ -1124,11 +1124,11 @@ aead_chacha20poly1305_MESSAGEBYTES_MAX() ->
randombytes(N) -> randombytes(N) ->
enacl_nif:randombytes(N). enacl_nif:randombytes(N).
%% @doc randombytes_int32/0 produces an integer in the 32bit range %% @doc randombytes_uint32/0 produces an integer in the 32bit range
%% @end %% @end
-spec randombytes_int32() -> integer(). -spec randombytes_uint32() -> integer().
randombytes_int32() -> randombytes_uint32() ->
enacl_nif:randombytes_int32(). enacl_nif:randombytes_uint32().
%% @doc randombytes_uniform/1 produces a random integer in the space [0..N) %% @doc randombytes_uniform/1 produces a random integer in the space [0..N)
%% That is with the upper bound excluded. Fails for integers above 32bit size %% That is with the upper bound excluded. Fails for integers above 32bit size

4
src/enacl_nif.erl
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@ -154,7 +154,7 @@
%% Access to the RNG %% Access to the RNG
-export([ -export([
randombytes/1, randombytes/1,
randombytes_int32/0, randombytes_uint32/0,
randombytes_uniform/1 randombytes_uniform/1
]). ]).
@ -298,7 +298,7 @@ crypto_kx_PUBLICKEYBYTES() -> erlang:nif_error(nif_not_loaded).
crypto_kx_SECRETKEYBYTES() -> erlang:nif_error(nif_not_loaded). crypto_kx_SECRETKEYBYTES() -> erlang:nif_error(nif_not_loaded).
randombytes(_RequestedSize) -> erlang:nif_error(nif_not_loaded). randombytes(_RequestedSize) -> erlang:nif_error(nif_not_loaded).
randombytes_int32() -> erlang:nif_error(nif_not_loaded). randombytes_uint32() -> erlang:nif_error(nif_not_loaded).
randombytes_uniform(_UpperBound) -> erlang:nif_error(nif_not_loaded). randombytes_uniform(_UpperBound) -> erlang:nif_error(nif_not_loaded).
scramble_block_16(_Block, _Key) -> erlang:nif_error(nif_not_loaded). scramble_block_16(_Block, _Key) -> erlang:nif_error(nif_not_loaded).