AUTHLEN
char name[AUTHLEN];
char name[AUTHLEN]; /* PAP/CHAP system name */
char key[AUTHLEN]; /* PAP/CHAP key */
char expkey[AUTHLEN << 2];
char expkey[AUTHLEN << 2];
char ptr[AUTHLEN * 2 + 3]; /* Allow for \r\n at the end (- NUL) */
u_char local[CHAPCHALLENGELEN + AUTHLEN]; /* I invented this one */
u_char peer[CHAPCHALLENGELEN + AUTHLEN]; /* Peer gave us this one */
char authname[AUTHLEN]; /* Peers name (authenticated) */
ac->user_name[AUTHLEN-1] = '\0';
char user_name[AUTHLEN]; /* Session User-Name */