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c,python: Change the algorithm for hashing the master password to Argon2

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This commit is contained in:
Mitja HORVAT
2021-11-14 09:59:51 +01:00
parent c869c79619
commit cc473f4c24
4 changed files with 21 additions and 10 deletions
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24
c/passgeny/src/passgeny.c
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@ -39,8 +39,8 @@
/* Ensure that pg_master_hash is big enough to hold a SHA256 hash */
_Static_assert(
sizeof(((passgeny_t *)NULL)->pg_master_hash) == SHA256_DIGEST_LENGTH,
"pg_master_hash doesn't match SHA256_DIGEST_LENGTH");
sizeof(((passgeny_t *)NULL)->pg_master_hash) == PASSGENY_ARGON2_HASH_LEN,
"pg_master_hash doesn't match PASSGENY_ARGON2_HASH_LEN");
static bool passgeny_patmatch(
const char **pstr,
@ -57,13 +57,25 @@ static void passgeny_gen_str(char *out, size_t out_sz, const char *pool, bhash_t
*/
bool passgeny_init(passgeny_t *passgeny, const char *master_password)
{
SHA256_CTX sha256;
bool rc;
memset(passgeny, 0, sizeof(*passgeny));
SHA256_Init(&sha256);
SHA256_Update(&sha256, master_password, strlen(master_password));
SHA256_Final(passgeny->pg_master_hash, &sha256);
rc = argon2id_hash_raw(
PASSGENY_ARGON2_TIME_COST,
PASSGENY_ARGON2_MEMORY_COST,
PASSGENY_ARGON2_PARALLEL,
master_password,
strlen(master_password),
PASSGENY_ARGON2_SALT,
strlen(PASSGENY_ARGON2_SALT),
passgeny->pg_master_hash,
sizeof(passgeny->pg_master_hash));
if (rc != 0)
{
fprintf(stderr, "Error generating master hash.");
return false;
}
passgeny->pg_pattern = strdup(PASSGENY_DEFAULT_PATTERN);