4.4BSD/usr/src/contrib/gzip-1.0.7/crypt.h

/* crypt.h (dummy version) -- do not perform encrytion
 * Hardly worth copyrighting :-)
 */

#ifdef CRYPT
#  undef CRYPT      /* dummy version */
#endif

#define RAND_HEAD_LEN  12  /* length of encryption random header */

#define zencode
#define zdecode