hex2bin
hex2bin((u_char *)hexkey->keybuf3_val, binkey->key,
extern int hex2bin(u_char *, u_char *, int);
static int hex2bin(unsigned char);
cp[i>>1] = hex2bin(pad[i]) << 4 | hex2bin(pad[i+1]);
(void) hex2bin(len, secret, buf);
(void) hex2bin(binkeybytes, hexkeybuf, binkeybuf);
(void) hex2bin(len, secret, buf);
extern int hex2bin(int len, char *hexnum, char *binnum);
(void) hex2bin(len, secret, buf);
extern int hex2bin(int len, char *hexnum, char *binnum);