/* 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. * * Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org */#include "mycrypt.h"int register_hash(const struct _hash_descriptor *hash){   int x;   _ARGCHK(hash != NULL);   /* is it already registered? */   for (x = 0; x < TAB_SIZE; x++) {       if (memcmp(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor)) == 0) {          return x;       }   }   /* find a blank spot */   for (x = 0; x < TAB_SIZE; x++) {       if (hash_descriptor[x].name == NULL) {          memcpy(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor));          return x;       }   }   /* no spot */   return -1;}