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hmac-sha512.c

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  • hmac-sha512.c 1.44 KiB
    /* hmac-sha512.c
     *
     * HMAC-SHA512 message authentication code.
     */
    
    /* nettle, low-level cryptographics library
     *
     * Copyright (C) 2003, 2010 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.
     */
    
    #if HAVE_CONFIG_H
    # include "config.h"
    #endif
    
    #include "hmac.h"
    
    void
    hmac_sha512_set_key(struct hmac_sha512_ctx *ctx,
    		    unsigned key_length, const uint8_t *key)
    {
      HMAC_SET_KEY(ctx, &nettle_sha512, key_length, key);
    }
    
    void
    hmac_sha512_update(struct hmac_sha512_ctx *ctx,
    		   unsigned length, const uint8_t *data)
    {
      sha512_update(&ctx->state, length, data);
    }
    
    void
    hmac_sha512_digest(struct hmac_sha512_ctx *ctx,
    		   unsigned length, uint8_t *digest)
    {
      HMAC_DIGEST(ctx, &nettle_sha512, length, digest);
    }