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configure.ac

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  • ctr.h 1.77 KiB
    /* ctr.h
     *
     * Counter mode, using an network byte order incremented counter,
     * matching the testcases of NIST 800-38A.
     */
    
    /* nettle, low-level cryptographics library
     *
     * Copyright (C) 2005 Niels Möller
     *  
     * The nettle library is free software; you can redistribute it and/or modify
     * it under the terms of the GNU Lesser General Public License as published by
     * the Free Software Foundation; either version 2.1 of the License, or (at your
     * option) any later version.
     * 
     * The nettle library 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 Lesser General Public
     * License for more details.
     * 
     * You should have received a copy of the GNU Lesser General Public License
     * along with the nettle library; see the file COPYING.LIB.  If not, write to
     * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
     * MA 02111-1307, USA.
     */
    
    #ifndef NETTLE_CTR_H_INCLUDED
    #define NETTLE_CTR_H_INCLUDED
    
    #include "nettle-types.h"
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    /* Name mangling */
    #define ctr_crypt nettle_ctr_crypt
    
    void
    ctr_crypt(void *ctx, nettle_crypt_func f,
    	  unsigned block_size, uint8_t *ctr,
    	  unsigned length, uint8_t *dst,
    	  const uint8_t *src);
    
    #define CTR_CTX(type, size) \
    { type ctx; uint8_t ctr[size]; }
    
    #define CTR_SET_COUNTER(ctx, data) \
    memcpy((ctx)->ctr, (data), sizeof((ctx)->ctr))
    
    #define CTR_CRYPT(self, f, length, dst, src)		\
    (0 ? ((f)(&(self)->ctx, 0, NULL, NULL))			\
       : ctr_crypt((void *) &(self)->ctx,			\
                   (nettle_crypt_func) (f),			\
    	       sizeof((self)->ctr), (self)->ctr,	\
                   (length), (dst), (src)))
    
    #ifdef __cplusplus
    }
    #endif
    
    #endif /* NETTLE_CTR_H_INCLUDED */