int argon2_verify(const char *encoded, const void *pwd, const size_t pwdlen,
argon2_type type) {
argon2_context ctx;
uint8_t *out;
int ret;
int decode_result;
/* max values, to be updated in decode_string */
uint32_t encoded_len = strlen(encoded);
ctx.adlen = encoded_len;
ctx.saltlen = encoded_len;
ctx.outlen = encoded_len;
ctx.allocate_cbk = NULL;
ctx.free_cbk = NULL;
ctx.secret = NULL;
ctx.secretlen = 0;
ctx.ad = malloc(ctx.adlen);
ctx.salt = malloc(ctx.saltlen);
ctx.out = malloc(ctx.outlen);
if (!ctx.out || !ctx.salt || !ctx.ad) {
free(ctx.ad);
free(ctx.salt);
free(ctx.out);
return ARGON2_MEMORY_ALLOCATION_ERROR;
}
out = malloc(ctx.outlen);
if (!out) {
free(ctx.ad);
free(ctx.salt);
free(ctx.out);
return ARGON2_MEMORY_ALLOCATION_ERROR;
}
decode_result = decode_string(&ctx, encoded, type);
if (decode_result != ARGON2_OK) {
free(ctx.ad);
free(ctx.salt);
free(ctx.out);
free(out);
return decode_result;
}
ret = argon2_hash(ctx.t_cost, ctx.m_cost, ctx.threads, pwd, pwdlen,
ctx.salt, ctx.saltlen, out, ctx.outlen, NULL, 0, type);
free(ctx.ad);
free(ctx.salt);
if (ret == ARGON2_OK && argon2_compare(out, ctx.out, ctx.outlen)) {
ret = ARGON2_VERIFY_MISMATCH;
}
free(out);
free(ctx.out);
return ret;
}
int argon2_verify(const char *encoded, const void *pwd, const size_t pwdlen,
argon2_type type) {
argon2_context ctx;
uint8_t *out;
int ret;
/* max values, to be updated in decode_string */
ctx.adlen = 512;
ctx.saltlen = 512;
ctx.outlen = 512;
ctx.ad = malloc(ctx.adlen);
ctx.salt = malloc(ctx.saltlen);
ctx.out = malloc(ctx.outlen);
if (!ctx.out || !ctx.salt || !ctx.ad) {
free(ctx.ad);
free(ctx.salt);
free(ctx.out);
return ARGON2_MEMORY_ALLOCATION_ERROR;
}
out = malloc(ctx.outlen);
if (!out) {
free(ctx.ad);
free(ctx.salt);
free(ctx.out);
return ARGON2_MEMORY_ALLOCATION_ERROR;
}
if(decode_string(&ctx, encoded, type) != 1) {
free(ctx.ad);
free(ctx.salt);
free(ctx.out);
free(out);
return ARGON2_DECODING_FAIL;
}
ret = argon2_hash(ctx.t_cost, ctx.m_cost, ctx.threads, pwd, pwdlen, ctx.salt,
ctx.saltlen, out, ctx.outlen, NULL, 0, type);
free(ctx.ad);
free(ctx.salt);
if (ret != ARGON2_OK || argon2_compare(out, ctx.out, ctx.outlen)) {
free(out);
free(ctx.out);
return ARGON2_DECODING_FAIL;
}
free(out);
free(ctx.out);
return ARGON2_OK;
}
