external/bsd/tcpdump/dist/signature.h

   1 /*
   2  * Redistribution and use in source and binary forms, with or without
   3  * modification, are permitted provided that: (1) source code
   4  * distributions retain the above copyright notice and this paragraph
   5  * in its entirety, and (2) distributions including binary code include
   6  * the above copyright notice and this paragraph in its entirety in
   7  * the documentation or other materials provided with the distribution.
   8  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
   9  * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
  10  * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  11  * FOR A PARTICULAR PURPOSE.
  12  *
  13  * Functions for signature and digest verification.
  14  *
  15  * Original code by Hannes Gredler (hannes@juniper.net)
  16  */
  17
  18 /* for netdissect_options */
  19 #include "netdissect.h"
  20
  21 /* signature checking result codes */
  22 #define SIGNATURE_VALID         0
  23 #define SIGNATURE_INVALID       1
  24 #define CANT_CHECK_SIGNATURE    2
  25
  26 extern const struct tok signature_check_values[];
  27 extern int signature_verify(netdissect_options *, const u_char *, u_int, u_char *);