str2key
int str2key(char *, char *, size_t);
if (str2key($4, $$.md5key, sizeof($$.md5key)) == -1) {
if (str2key($7, $$.auth_key_in,
if (str2key($7, $$.auth_key_out,
if (str2key($2, $$.enc_key, sizeof($$.enc_key)) == -1) {
static int str2key(char *, const char *, int);
len = str2key($$->md5key, $4, sizeof($$->md5key));