_crypt_to64
_crypt_to64(buffer, l, 4); buffer += 4;
_crypt_to64(buffer, l, 4); buffer += 4;
_crypt_to64(buffer, l, 4); buffer += 4;
_crypt_to64(buffer, l, 4); buffer += 4;
_crypt_to64(buffer, l, 4); buffer += 4;
_crypt_to64(buffer, l, 2); buffer += 2;
extern void _crypt_to64(char *s, u_long v, int n);