50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#include <sodium.h>
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#include <erl_nif.h>
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#include "enacl.h"
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#include "randombytes.h"
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ERL_NIF_TERM enif_randombytes(ErlNifEnv *env, int argc,
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ERL_NIF_TERM const argv[]) {
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unsigned req_size;
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ErlNifBinary result;
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if ((argc != 1) || (!enif_get_uint(env, argv[0], &req_size))) {
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return enif_make_badarg(env);
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}
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if (!enif_alloc_binary(req_size, &result)) {
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return enacl_error_tuplee(env, "alloc_failed");
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}
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randombytes(result.data, result.size);
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return enif_make_binary(env, &result);
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}
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ERL_NIF_TERM enif_randombytes_uint32(ErlNifEnv *env, int argc,
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ERL_NIF_TERM const argv[]) {
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ErlNifUInt64 result;
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if (argc != 0) {
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return enif_make_badarg(env);
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}
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result = randombytes_random();
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return enif_make_uint64(env, result);
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}
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ERL_NIF_TERM enif_randombytes_uniform(ErlNifEnv *env, int argc,
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ERL_NIF_TERM const argv[]) {
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unsigned upper_bound;
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ErlNifUInt64 result;
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if ((argc != 1) || (!enif_get_uint(env, argv[0], &upper_bound))) {
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return enif_make_badarg(env);
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}
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result = randombytes_uniform(upper_bound);
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return enif_make_uint64(env, result);
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}
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