providers/implementations/serializers/serializer_ec_param.c

   1 /*
   2  * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/core_numbers.h>
  11 #include <openssl/pem.h>
  12 #include <openssl/ec.h>
  13 #include <openssl/types.h>
  14 #include <openssl/params.h>
  15 #include "prov/bio.h"
  16 #include "prov/implementations.h"
  17 #include "prov/providercommonerr.h"
  18 #include "prov/provider_ctx.h"
  19 #include "serializer_local.h"
  20
  21 static OSSL_OP_serializer_newctx_fn ec_param_newctx;
  22 static OSSL_OP_serializer_freectx_fn ec_param_freectx;
  23 static OSSL_OP_serializer_serialize_data_fn ec_param_der_data;
  24 static OSSL_OP_serializer_serialize_object_fn ec_param_der;
  25 static OSSL_OP_serializer_serialize_data_fn ec_param_pem_data;
  26 static OSSL_OP_serializer_serialize_object_fn ec_param_pem;
  27
  28 static OSSL_OP_serializer_serialize_data_fn ec_param_print_data;
  29 static OSSL_OP_serializer_serialize_object_fn ec_param_print;
  30
  31
  32 /* There is no specific implementation context, so use the provider context */
  33 static void *ec_param_newctx(void *provctx)
  34 {
  35     return provctx;
  36 }
  37
  38 static void ec_param_freectx(void *vctx)
  39 {
  40 }
  41
  42 /* Public key : DER */
  43 static int ec_param_der_data(void *vctx, const OSSL_PARAM params[],
  44                              OSSL_CORE_BIO *out,
  45                              OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  46 {
  47     OSSL_OP_keymgmt_new_fn *ec_new;
  48     OSSL_OP_keymgmt_free_fn *ec_free;
  49     OSSL_OP_keymgmt_import_fn *ec_import;
  50     int ok = 0;
  51
  52     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
  53
  54     if (ec_import != NULL) {
  55         EC_KEY *eckey;
  56
  57         /* vctx == provctx */
  58         if ((eckey = ec_new(vctx)) != NULL
  59             && ec_import(eckey, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
  60             && ec_param_der(vctx, eckey, out, cb, cbarg))
  61             ok = 1;
  62         ec_free(eckey);
  63     }
  64     return ok;
  65 }
  66
  67 static int ec_param_der(void *vctx, void *eckey, OSSL_CORE_BIO *cout,
  68                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  69 {
  70     BIO *out = bio_new_from_core_bio(vctx, cout);
  71     int ret;
  72
  73     if (out == NULL)
  74         return 0;
  75
  76     ret = i2d_ECPKParameters_bio(out, EC_KEY_get0_group(eckey));
  77     BIO_free(out);
  78
  79     return ret;
  80 }
  81
  82 /* Public key : PEM */
  83 static int ec_param_pem_data(void *vctx, const OSSL_PARAM params[],
  84                              OSSL_CORE_BIO *out,
  85                              OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  86 {
  87     OSSL_OP_keymgmt_new_fn *ec_new;
  88     OSSL_OP_keymgmt_free_fn *ec_free;
  89     OSSL_OP_keymgmt_import_fn *ec_import;
  90     int ok = 0;
  91
  92     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
  93
  94     if (ec_import != NULL) {
  95         EC_KEY *eckey;
  96
  97         /* vctx == provctx */
  98         if ((eckey = ec_new(vctx)) != NULL
  99             && ec_import(eckey, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
 100             && ec_param_pem(vctx, eckey, out, cb, cbarg))
 101             ok = 1;
 102         ec_free(eckey);
 103     }
 104     return ok;
 105 }
 106
 107 static int ec_param_pem(void *vctx, void *eckey, OSSL_CORE_BIO *cout,
 108                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 109 {
 110     BIO *out = bio_new_from_core_bio(vctx, cout);
 111     int ret;
 112
 113     if (out == NULL)
 114         return 0;
 115
 116     ret = PEM_write_bio_ECPKParameters(out, EC_KEY_get0_group(eckey));
 117     BIO_free(out);
 118
 119     return ret;
 120 }
 121
 122 static int ec_param_print_data(void *vctx, const OSSL_PARAM params[],
 123                                OSSL_CORE_BIO *out,
 124                                OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 125 {
 126     OSSL_OP_keymgmt_new_fn *ec_new;
 127     OSSL_OP_keymgmt_free_fn *ec_free;
 128     OSSL_OP_keymgmt_import_fn *ec_import;
 129     int ok = 0;
 130
 131     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
 132
 133     if (ec_import != NULL) {
 134         EC_KEY *eckey;
 135
 136         /* vctx == provctx */
 137         if ((eckey = ec_new(vctx)) != NULL
 138             && ec_import(eckey, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
 139             && ec_param_print(vctx, eckey, out, cb, cbarg))
 140             ok = 1;
 141         ec_free(eckey);
 142     }
 143     return ok;
 144 }
 145
 146 static int ec_param_print(void *vctx, void *eckey, OSSL_CORE_BIO *cout,
 147                            OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 148 {
 149     BIO *out = bio_new_from_core_bio(vctx, cout);
 150     int ret;
 151
 152     if (out == NULL)
 153         return 0;
 154
 155     ret = ossl_prov_print_eckey(out, eckey, ec_print_params);
 156     BIO_free(out);
 157
 158     return ret;
 159 }
 160
 161 const OSSL_DISPATCH ec_param_der_serializer_functions[] = {
 162     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_param_newctx },
 163     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_param_freectx },
 164     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))ec_param_der_data },
 165     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_param_der },
 166     { 0, NULL }
 167 };
 168
 169 const OSSL_DISPATCH ec_param_pem_serializer_functions[] = {
 170     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_param_newctx },
 171     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_param_freectx },
 172     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))ec_param_pem_data },
 173     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_param_pem },
 174     { 0, NULL }
 175 };
 176
 177 const OSSL_DISPATCH ec_param_text_serializer_functions[] = {
 178     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_param_newctx },
 179     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_param_freectx },
 180     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_param_print },
 181     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 182       (void (*)(void))ec_param_print_data },
 183     { 0, NULL }
 184 };