devs/libstrophe-gh-mirror
2
0
Fork 0
mirror of https://github.com/strophe/libstrophe.git synced 2026-07-18 11:56:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

allow reading arbitrary number of bytes from xmpp_rand_bytes()

Browse Source 
If we expose the API it shouldn't be limited.

Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>
This commit is contained in:
Steffen Jaeckel
2022-02-04 13:35:13 +01:00
parent 9c7b8580d8
commit 69550f9be9
1 changed files with 12 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/rand.c
View File

@@ -284,12 +284,18 @@ void xmpp_rand_free(xmpp_ctx_t *ctx, xmpp_rand_t *rand)
void xmpp_rand_bytes(xmpp_rand_t *rand, unsigned char *output, size_t len)
{
int rc;
rc = Hash_DRBG_Generate(&rand->ctx, (uint8_t *)output, len);
if (rc == RESEED_NEEDED) {
xmpp_rand_reseed(rand);
rc = Hash_DRBG_Generate(&rand->ctx, (uint8_t *)output, len);
assert(rc == 0);
size_t gen, tot = 0;
while (tot < len) {
gen = len - tot;
if (gen > GENERATE_MAX)
gen = GENERATE_MAX;
rc = Hash_DRBG_Generate(&rand->ctx, (uint8_t *)output + tot, gen);
if (rc == RESEED_NEEDED) {
xmpp_rand_reseed(rand);
rc = Hash_DRBG_Generate(&rand->ctx, (uint8_t *)output + tot, gen);
assert(rc == 0);
}
tot += gen;
}
}