hmac_process.c

在BOOTLOADR中增加当今最好AES加密技术,可用于客户远程更新应用程式

/* 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, [e-mail], http://libtomcrypt.com
 */
#include "tomcrypt.h"

/**
  @file hmac_process.c
  HMAC support, process data, Tom St Denis/Dobes Vandermeer
*/

#ifdef HMAC

/** 
  Process data through HMAC
  @param hmac    The hmac state
  @param in      The data to send through HMAC
  @param inlen   The length of the data to HMAC (octets)
  @return CRYPT_OK if successful
*/
int hmac_process(hmac_state *hmac, const unsigned char *in, unsigned long inlen)
{
    int err;
    LTC_ARGCHK(hmac != NULL);
    LTC_ARGCHK(in != NULL);
    if ((err = hash_is_valid(hmac->hash)) != CRYPT_OK) {
        return err;
    }
    return hash_descriptor[hmac->hash].process(&hmac->md, in, inlen);
}

#endif


/* $Source: /cvs/libtom/libtomcrypt/src/mac/hmac/hmac_process.c,v $ */
/* $Revision: 1.4 $ */
/* $Date: 2006/03/31 14:15:35 $ */