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sec-add-1.c

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  • cmac.h 4.18 KiB
    /* cmac.h
    
       CMAC mode, as specified in RFC4493
    
       Copyright (C) 2017 Red Hat, Inc.
    
       Contributed by Nikos Mavrogiannopoulos
    
       This file is part of GNU Nettle.
    
       GNU Nettle is free software: you can redistribute it and/or
       modify it under the terms of either:
    
         * the GNU Lesser General Public License as published by the Free
           Software Foundation; either version 3 of the License, or (at your
           option) any later version.
    
       or
    
         * the GNU General Public License as published by the Free
           Software Foundation; either version 2 of the License, or (at your
           option) any later version.
    
       or both in parallel, as here.
    
       GNU Nettle is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       General Public License for more details.
    
       You should have received copies of the GNU General Public License and
       the GNU Lesser General Public License along with this program.  If
       not, see http://www.gnu.org/licenses/.
    */
    
    #ifndef NETTLE_CMAC_H_INCLUDED
    #define NETTLE_CMAC_H_INCLUDED
    
    #include "aes.h"
    #include "nettle-types.h"
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    #define CMAC128_DIGEST_SIZE 16
    
    #define cmac128_set_key nettle_cmac128_set_key
    #define cmac128_init nettle_cmac128_init
    #define cmac128_update nettle_cmac128_update
    #define cmac128_digest nettle_cmac128_digest
    #define cmac_aes128_set_key nettle_cmac_aes128_set_key
    #define cmac_aes128_update nettle_cmac_aes128_update
    #define cmac_aes128_digest nettle_cmac_aes128_digest
    #define cmac_aes256_set_key nettle_cmac_aes256_set_key
    #define cmac_aes256_update nettle_cmac_aes256_update
    #define cmac_aes256_digest nettle_cmac_aes256_digest
    
    struct cmac128_key
    {
      union nettle_block16 K1;
      union nettle_block16 K2;
    };
    
    struct cmac128_ctx
    {
      /* MAC state */
      union nettle_block16 X;
    
      /* Block buffer */