release/src/router/openssl/crypto/cmac/cm_ameth.c

   1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   2  * project 2010.
   3  */
   4 /* ====================================================================
   5  * Copyright (c) 2010 The OpenSSL Project.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  *
  19  * 3. All advertising materials mentioning features or use of this
  20  *    software must display the following acknowledgment:
  21  *    "This product includes software developed by the OpenSSL Project
  22  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  23  *
  24  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  25  *    endorse or promote products derived from this software without
  26  *    prior written permission. For written permission, please contact
  27  *    licensing@OpenSSL.org.
  28  *
  29  * 5. Products derived from this software may not be called "OpenSSL"
  30  *    nor may "OpenSSL" appear in their names without prior written
  31  *    permission of the OpenSSL Project.
  32  *
  33  * 6. Redistributions of any form whatsoever must retain the following
  34  *    acknowledgment:
  35  *    "This product includes software developed by the OpenSSL Project
  36  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  39  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  40  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  41  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  42  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  43  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  44  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  45  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  46  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  47  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  49  * OF THE POSSIBILITY OF SUCH DAMAGE.
  50  * ====================================================================
  51  */
  52
  53 #include <stdio.h>
  54 #include "cryptlib.h"
  55 #include <openssl/evp.h>
  56 #include <openssl/cmac.h>
  57 #include "asn1_locl.h"
  58
  59 /* CMAC "ASN1" method. This is just here to indicate the
  60  * maximum CMAC output length and to free up a CMAC
  61  * key.
  62  */
  63
  64 static int cmac_size(const EVP_PKEY *pkey)
  65         {
  66         return EVP_MAX_BLOCK_LENGTH;
  67         }
  68
  69 static void cmac_key_free(EVP_PKEY *pkey)
  70         {
  71         CMAC_CTX *cmctx = (CMAC_CTX *)pkey->pkey.ptr;
  72         if (cmctx)
  73                 CMAC_CTX_free(cmctx);
  74         }
  75
  76 const EVP_PKEY_ASN1_METHOD cmac_asn1_meth =
  77         {
  78         EVP_PKEY_CMAC,
  79         EVP_PKEY_CMAC,
  80         0,
  81
  82         "CMAC",
  83         "OpenSSL CMAC method",
  84
  85         0,0,0,0,
  86
  87         0,0,0,
  88
  89         cmac_size,
  90         0,
  91         0,0,0,0,0,0,0,
  92
  93         cmac_key_free,
  94         0,
  95         0,0
  96         };
  97