AUTHCHALEN
u_char chap_challenge[AUTHCHALEN]; /* random challenge used by CHAP */
u_char *value, *name, digest[AUTHCHALEN], dsize;
if (value_len != AUTHCHALEN) {
AUTHCHALEN);
MD5Update(&ctx, sp->chap_challenge, AUTHCHALEN);
clen = AUTHCHALEN;
(size_t)AUTHCHALEN, sp->chap_challenge,