/* 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@gmail.com, http://libtomcrypt.com *//**   @file eax_encrypt.c   EAX implementation, encrypt block by Tom St Denis */#include "tomcrypt.h"#ifdef EAX_MODE/**   Encrypt with EAX a block of data.   @param eax        The EAX state   @param pt         The plaintext to encrypt   @param ct         [out] The ciphertext as encrypted   @param length     The length of the plaintext (octets)   @return CRYPT_OK if successful*/int eax_encrypt(eax_state *eax, const unsigned char *pt, unsigned char *ct,                 unsigned long length){   int err;      LTC_ARGCHK(eax != NULL);   LTC_ARGCHK(pt  != NULL);   LTC_ARGCHK(ct  != NULL);   /* encrypt */   if ((err = ctr_encrypt(pt, ct, length, &eax->ctr)) != CRYPT_OK) {      return err;   }   /* omac ciphertext */   return omac_process(&eax->ctomac, ct, length);}#endif/* $Source: /cvs/libtom/libtomcrypt/src/encauth/eax/eax_encrypt.c,v $ *//* $Revision: 1.4 $ *//* $Date: 2006/03/31 14:15:35 $ */