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added API for random number generators, served through credential factory

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ported randomizer_t to a rng_t on top of /dev/(u)random (plugin random)
This commit is contained in:
Martin Willi
2008-04-15 05:56:35 +00:00
parent 0644ebd3de
commit 6a365f0740
33 changed files with 700 additions and 451 deletions
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src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c
+6 -8
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@@ -22,7 +22,6 @@
#include "gmp_diffie_hellman.h"
#include <utils/randomizer.h>
#include <debug.h>
@@ -521,9 +520,8 @@ static void destroy(private_gmp_diffie_hellman_t *this)
gmp_diffie_hellman_t *gmp_diffie_hellman_create(diffie_hellman_group_t group)
{
private_gmp_diffie_hellman_t *this = malloc_thing(private_gmp_diffie_hellman_t);
randomizer_t *randomizer;
rng_t *rng;
chunk_t random;
status_t status;
/* public functions */
this->public.dh.get_shared_secret = (status_t (*)(diffie_hellman_t *, chunk_t *)) get_shared_secret;
@@ -550,15 +548,15 @@ gmp_diffie_hellman_t *gmp_diffie_hellman_create(diffie_hellman_group_t group)
destroy(this);
return NULL;
}
randomizer = randomizer_create();
status = randomizer->allocate_pseudo_random_bytes(
randomizer, this->p_len, &random);
randomizer->destroy(randomizer);
if (status != SUCCESS)
rng = lib->crypto->create_rng(lib->crypto, RNG_STRONG);
if (!rng)
{
DBG1("no RNG found for quality %N", rng_quality_names, RNG_STRONG);
destroy(this);
return NULL;
}
rng->allocate_bytes(rng, this->p_len, &random);
rng->destroy(rng);
mpz_import(this->xa, random.len, 1, 1, 1, 0, random.ptr);
chunk_free(&random);