options: Complete the transition to numeric toggles (`#if') For the sake of review, this commit alters only the code; the affiliated comments within the source files also need to be updated, but doing so now would obscure the operational changes that have been made here. * All on/off options have been switched to the numeric `#if' variant; that is the only way to make this `default_options.h.in' thing work in a reasonable manner. * There is now some very minor compile-time checking of the user's choice of options. * NO_FAST_EXPTMOD doesn't seem to be used, so it has been removed. * ENABLE_USER_ALGO_LIST was supposed to be renamed DROPBEAR_USER_ALGO_LIST, and this commit completes that work. * DROPBEAR_FUZZ seems to be a relatively new, as-yet undocumented option, which was added by the following commit: commit 6e0b539e9ca0b5628c6c5a3d118ad6a2e79e8039 Author: Matt Johnston <[email protected]> Date: Tue May 23 22:29:21 2017 +0800 split out checkpubkey_line() separately It has now been added to `sysoptions.h' and defined as `0' by default. * The configuration option `DROPBEAR_PASSWORD_ENV' is no longer listed in `default_options.h.in'; it is no longer meant to be set by the user, and is instead left to be defined in `sysoptions.h' (where it was already being defined) as merely the name of the environment variable in question: DROPBEAR_PASSWORD To enable or disable use of that environment variable, the user must now toggle `DROPBEAR_USE_DROPBEAR_PASSWORD'. * The sFTP support is now toggled by setting `DROPBEAR_SFTPSERVER', and the path of the sFTP server program is set independently through the usual SFTPSERVER_PATH.

/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#include "tomcrypt.h"

/**
   @file pelican_memory.c
   Pelican MAC, MAC a block of memory, by Tom St Denis
*/

#ifdef LTC_PELICAN

/**
  Pelican block of memory
  @param key      The key for the MAC
  @param keylen   The length of the key (octets)
  @param in       The input to MAC
  @param inlen    The length of the input (octets)
  @param out      [out] The output TAG
  @return CRYPT_OK on success
*/
int pelican_memory(const unsigned char *key, unsigned long keylen,
                   const unsigned char *in,  unsigned long inlen,
                         unsigned char *out)
{
   pelican_state *pel;
   int err;

   pel = XMALLOC(sizeof(*pel));
   if (pel == NULL) {
      return CRYPT_MEM;
   }

   if ((err = pelican_init(pel, key, keylen)) != CRYPT_OK) {
      XFREE(pel);
      return err;
   }
   if ((err = pelican_process(pel, in ,inlen)) != CRYPT_OK) {
      XFREE(pel);
      return err;
   }
   err = pelican_done(pel, out);
   XFREE(pel);
   return err;
}


#endif

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