crypto/openssl/crypto/ecdsa/ecs_locl.h

   1 /* crypto/ecdsa/ecs_locl.h */
   2 /*
   3  * Written by Nils Larsch for the OpenSSL project
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #ifndef HEADER_ECS_LOCL_H
  60 # define HEADER_ECS_LOCL_H
  61
  62 # include <openssl/ecdsa.h>
  63
  64 #ifdef  __cplusplus
  65 extern "C" {
  66 #endif
  67
  68 struct ecdsa_method {
  69     const char *name;
  70     ECDSA_SIG *(*ecdsa_do_sign) (const unsigned char *dgst, int dgst_len,
  71                                  const BIGNUM *inv, const BIGNUM *rp,
  72                                  EC_KEY *eckey);
  73     int (*ecdsa_sign_setup) (EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv,
  74                              BIGNUM **r);
  75     int (*ecdsa_do_verify) (const unsigned char *dgst, int dgst_len,
  76                             const ECDSA_SIG *sig, EC_KEY *eckey);
  77 # if 0
  78     int (*init) (EC_KEY *eckey);
  79     int (*finish) (EC_KEY *eckey);
  80 # endif
  81     int flags;
  82     void *app_data;
  83 };
  84
  85 /* The ECDSA_METHOD was allocated and can be freed */
  86
  87 # define ECDSA_METHOD_FLAG_ALLOCATED 0x2
  88
  89 /*
  90  * If this flag is set the ECDSA method is FIPS compliant and can be used in
  91  * FIPS mode. This is set in the validated module method. If an application
  92  * sets this flag in its own methods it is its responsibility to ensure the
  93  * result is compliant.
  94  */
  95
  96 # define ECDSA_FLAG_FIPS_METHOD  0x1
  97
  98 typedef struct ecdsa_data_st {
  99     /* EC_KEY_METH_DATA part */
 100     int (*init) (EC_KEY *);
 101     /* method (ECDSA) specific part */
 102     ENGINE *engine;
 103     int flags;
 104     const ECDSA_METHOD *meth;
 105     CRYPTO_EX_DATA ex_data;
 106 } ECDSA_DATA;
 107
 108 /** ecdsa_check
 109  * checks whether ECKEY->meth_data is a pointer to a ECDSA_DATA structure
 110  * and if not it removes the old meth_data and creates a ECDSA_DATA structure.
 111  * \param  eckey pointer to a EC_KEY object
 112  * \return pointer to a ECDSA_DATA structure
 113  */
 114 ECDSA_DATA *ecdsa_check(EC_KEY *eckey);
 115
 116 #ifdef  __cplusplus
 117 }
 118 #endif
 119
 120 #endif                          /* HEADER_ECS_LOCL_H */