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moved key's random number generation to why2_random fn

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This commit is contained in:
Václav Šmejkal 2024-11-20 17:56:04 +01:00
parent 5b06ea5dc1
commit f95608f52a
Signed by: ENGO150
GPG Key ID: 4A57E86482968843
3 changed files with 12 additions and 2 deletions
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3
include/crypto.h
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@ -23,6 +23,8 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
extern "C" {
#endif
#include <sys/types.h>
//MACROS
#define WHY2_SUM_SEGMENT_SIZE 32 //SEGMENT SIZE FOR CALCULATING SUM
#define WHY2_SUM_BASE_PRIME 31 //PRIME FOR SUM BASE
@ -30,6 +32,7 @@ extern "C" {
//FUNCTIONS
unsigned long long why2_sum_segment(char *input); //CALCULATE SUM++ FOR input; USED FOR PADDING SEED
ssize_t why2_random(void *dest, size_t size); //WRITE CRYPTO-SECURE RANDOM NUMBER INTO dest
#ifdef __cplusplus
}

7
src/core/lib/utils/crypto.c
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@ -20,6 +20,8 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <string.h>
#include <math.h>
#include <sys/types.h>
#include <sys/random.h>
unsigned long long why2_sum_segment(char *input) //THE OUTPUT IS GOING TO GROW A LOT WITH LONG input, BUT IT SHOULDN'T BE A BIG PROBLEM. I TESTED FOR OVERFLOWS UP TO 4096-CHAR input AND ONLY GOT TO (14*10^(-7))% OF FULL ULL RANGE LMAO
{
@ -44,3 +46,8 @@ unsigned long long why2_sum_segment(char *input) //THE OUTPUT IS GOING TO GROW A
return output;
}
ssize_t why2_random(void *dest, size_t size)
{
return getrandom(dest, size, GRND_NONBLOCK);
}

4
src/core/lib/utils/misc.c
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@ -24,13 +24,13 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/random.h>
#include <ftw.h>
#include <curl/curl.h>
#include <json-c/json.h>
#include <git2.h>
#include <why2/crypto.h>
#include <why2/flags.h>
#include <why2/memory.h>
@ -422,7 +422,7 @@ char *why2_generate_key(int key_length)
for (int i = 0; i < key_length; i++)
{
//GET RANDOM NUMBER
if (getrandom(&random_buffer, sizeof(unsigned int), GRND_NONBLOCK) == -1) why2_die("getrandom fn failed!");
if (why2_random(&random_buffer, sizeof(unsigned int)) == -1) why2_die("getrandom fn failed!");
//SET numberBuffer TO RANDOM NUMBER BETWEEN 0 AND 52
number_buffer = (random_buffer % 52) + 1;