providers/implementations/serializers/serializer_ec_pub.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_dispatch.h>
  11 #include <openssl/err.h>
  12 #include <openssl/pem.h>
  13 #include <openssl/types.h>
  14 #include <openssl/params.h>
  15 #include "prov/bio.h"
  16 #include "prov/implementations.h"
  17 #include "prov/provider_ctx.h"
  18 #include "serializer_local.h"
  19
  20 static OSSL_FUNC_serializer_newctx_fn ec_pub_newctx;
  21 static OSSL_FUNC_serializer_freectx_fn ec_pub_freectx;
  22 static OSSL_FUNC_serializer_serialize_data_fn ec_pub_der_data;
  23 static OSSL_FUNC_serializer_serialize_object_fn ec_pub_der;
  24 static OSSL_FUNC_serializer_serialize_data_fn ec_pub_pem_data;
  25 static OSSL_FUNC_serializer_serialize_object_fn ec_pub_pem;
  26
  27 static OSSL_FUNC_serializer_serialize_data_fn ec_pub_print_data;
  28 static OSSL_FUNC_serializer_serialize_object_fn ec_pub_print;
  29
  30 /* Public key : context */
  31
  32 /*
  33  * There's no specific implementation context, so we use the provider context
  34  */
  35 static void *ec_pub_newctx(void *provctx)
  36 {
  37     return provctx;
  38 }
  39
  40 static void ec_pub_freectx(void *ctx)
  41 {
  42 }
  43
  44 /* Public key : DER */
  45 static int ec_pub_der_data(void *vctx, const OSSL_PARAM params[],
  46                            OSSL_CORE_BIO *out,
  47                            OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  48 {
  49     OSSL_FUNC_keymgmt_new_fn *ec_new;
  50     OSSL_FUNC_keymgmt_free_fn *ec_free;
  51     OSSL_FUNC_keymgmt_import_fn *ec_import;
  52     int ok = 0;
  53
  54     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
  55
  56     if (ec_import != NULL) {
  57         EC_KEY *eckey;
  58
  59         /* vctx == provctx */
  60         if ((eckey = ec_new(vctx)) != NULL
  61             && ec_import(eckey, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
  62             && ec_pub_der(vctx, eckey, out, cb, cbarg))
  63             ok = 1;
  64         ec_free(eckey);
  65     }
  66     return ok;
  67 }
  68
  69 static int ec_pub_der(void *ctx, void *eckey, OSSL_CORE_BIO *cout,
  70                       OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  71 {
  72     BIO *out = bio_new_from_core_bio(ctx, cout);
  73     int ret;
  74
  75     if (out == NULL)
  76         return 0;
  77
  78     ret = ossl_prov_write_pub_der_from_obj(out, eckey, EVP_PKEY_EC,
  79                                            ossl_prov_prepare_ec_params,
  80                                            ossl_prov_ec_pub_to_der);
  81     BIO_free(out);
  82
  83     return ret;
  84 }
  85
  86 /* Public key : PEM */
  87 static int ec_pub_pem_data(void *vctx, const OSSL_PARAM params[],
  88                            OSSL_CORE_BIO *out,
  89                            OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  90 {
  91     OSSL_FUNC_keymgmt_new_fn *ec_new;
  92     OSSL_FUNC_keymgmt_free_fn *ec_free;
  93     OSSL_FUNC_keymgmt_import_fn *ec_import;
  94     int ok = 0;
  95
  96     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
  97
  98     if (ec_import != NULL) {
  99         EC_KEY *eckey;
 100
 101         /* ctx == provctx */
 102         if ((eckey = ec_new(vctx)) != NULL
 103             && ec_import(eckey, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 104             && ec_pub_pem(vctx, eckey, out, cb, cbarg))
 105             ok = 1;
 106         ec_free(eckey);
 107     }
 108     return ok;
 109 }
 110
 111 static int ec_pub_pem(void *vctx, void *eckey, OSSL_CORE_BIO *cout,
 112                       OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 113 {
 114     BIO *out = bio_new_from_core_bio(vctx, cout);
 115     int ret;
 116
 117     if (out == NULL)
 118         return 0;
 119
 120     ret = ossl_prov_write_pub_pem_from_obj(out, eckey, EVP_PKEY_EC,
 121                                            ossl_prov_prepare_ec_params,
 122                                            ossl_prov_ec_pub_to_der);
 123     BIO_free(out);
 124
 125     return ret;
 126 }
 127
 128 static int ec_pub_print_data(void *vctx, const OSSL_PARAM params[],
 129                              OSSL_CORE_BIO *out,
 130                              OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 131 {
 132     OSSL_FUNC_keymgmt_new_fn *ec_new;
 133     OSSL_FUNC_keymgmt_free_fn *ec_free;
 134     OSSL_FUNC_keymgmt_import_fn *ec_import;
 135     int ok = 0;
 136
 137     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
 138
 139     if (ec_import != NULL) {
 140         EC_KEY *eckey;
 141
 142         /* ctx == provctx */
 143         if ((eckey = ec_new(vctx)) != NULL
 144             && ec_import(eckey, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 145             && ec_pub_print(vctx, eckey, out, cb, cbarg))
 146             ok = 1;
 147         ec_free(eckey);
 148     }
 149     return ok;
 150 }
 151
 152 static int ec_pub_print(void *vctx, void *eckey, OSSL_CORE_BIO *cout,
 153                         OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 154 {
 155     BIO *out = bio_new_from_core_bio(vctx, cout);
 156     int ret;
 157
 158     if (out == NULL)
 159         return 0;
 160
 161     ret = ossl_prov_print_eckey(out, eckey, ec_print_pub);
 162     BIO_free(out);
 163
 164     return ret;
 165 }
 166
 167 const OSSL_DISPATCH ec_pub_der_serializer_functions[] = {
 168     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_pub_newctx },
 169     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_pub_freectx },
 170     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))ec_pub_der_data },
 171     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_pub_der },
 172     { 0, NULL }
 173 };
 174
 175 const OSSL_DISPATCH ec_pub_pem_serializer_functions[] = {
 176     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_pub_newctx },
 177     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_pub_freectx },
 178     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))ec_pub_pem_data },
 179     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_pub_pem },
 180     { 0, NULL }
 181 };
 182
 183 const OSSL_DISPATCH ec_pub_text_serializer_functions[] = {
 184     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_pub_newctx },
 185     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_pub_freectx },
 186     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_pub_print },
 187     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 188       (void (*)(void))ec_pub_print_data },
 189     { 0, NULL }
 190 };