#include <stddef.h>
#include <stdbool.h>
void user_verifier_lookup(char * username,
size_t *verifier_len, char **verifier,
size_t *salt_len, char **salt,
bool *use_default_2048_bit_n_modulus,
char **n_modulus_ascii,
char **generator_ascii,
void *user_data);