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 "serializer_local.h"
  19
  20 static OSSL_OP_serializer_newctx_fn ec_param_newctx;
  21 static OSSL_OP_serializer_freectx_fn ec_param_freectx;
  22 static OSSL_OP_serializer_serialize_data_fn ec_param_der_data;
  23 static OSSL_OP_serializer_serialize_object_fn ec_param_der;
  24 static OSSL_OP_serializer_serialize_data_fn ec_param_pem_data;
  25 static OSSL_OP_serializer_serialize_object_fn ec_param_pem;
  26
  27 static OSSL_OP_serializer_serialize_data_fn ec_param_print_data;
  28 static OSSL_OP_serializer_serialize_object_fn ec_param_print;
  29
  30
  31 /* There is no specific implementation context, so use the provider context */
  32 static void *ec_param_newctx(void *provctx)
  33 {
  34     return provctx;
  35 }
  36
  37 static void ec_param_freectx(void *vctx)
  38 {
  39 }
  40
  41 /* Public key : DER */
  42 static int ec_param_der_data(void *vctx, const OSSL_PARAM params[], BIO *out,
  43                               OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  44 {
  45     OSSL_OP_keymgmt_new_fn *ec_new;
  46     OSSL_OP_keymgmt_free_fn *ec_free;
  47     OSSL_OP_keymgmt_import_fn *ec_import;
  48     int ok = 0;
  49
  50     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
  51
  52     if (ec_import != NULL) {
  53         EC_KEY *eckey;
  54
  55         /* vctx == provctx */
  56         if ((eckey = ec_new(vctx)) != NULL
  57             && ec_import(eckey, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
  58             && ec_param_der(vctx, eckey, out, cb, cbarg))
  59             ok = 1;
  60         ec_free(eckey);
  61     }
  62     return ok;
  63 }
  64
  65 static int ec_param_der(void *vctx, void *eckey, BIO *out,
  66                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  67 {
  68     return i2d_ECPKParameters_bio(out, EC_KEY_get0_group(eckey));
  69 }
  70
  71 /* Public key : PEM */
  72 static int ec_param_pem_data(void *vctx, const OSSL_PARAM params[], BIO *out,
  73                               OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  74 {
  75     OSSL_OP_keymgmt_new_fn *ec_new;
  76     OSSL_OP_keymgmt_free_fn *ec_free;
  77     OSSL_OP_keymgmt_import_fn *ec_import;
  78     int ok = 0;
  79
  80     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
  81
  82     if (ec_import != NULL) {
  83         EC_KEY *eckey;
  84
  85         /* vctx == provctx */
  86         if ((eckey = ec_new(vctx)) != NULL
  87             && ec_import(eckey, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
  88             && ec_param_pem(vctx, eckey, out, cb, cbarg))
  89             ok = 1;
  90         ec_free(eckey);
  91     }
  92     return ok;
  93 }
  94
  95 static int ec_param_pem(void *vctx, void *eckey, BIO *out,
  96                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  97 {
  98     return PEM_write_bio_ECPKParameters(out, EC_KEY_get0_group(eckey));
  99 }
 100
 101 static int ec_param_print_data(void *vctx, const OSSL_PARAM params[], BIO *out,
 102                                 OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 103 {
 104     OSSL_OP_keymgmt_new_fn *ec_new;
 105     OSSL_OP_keymgmt_free_fn *ec_free;
 106     OSSL_OP_keymgmt_import_fn *ec_import;
 107     int ok = 0;
 108
 109     ec_get_new_free_import(&ec_new, &ec_free, &ec_import);
 110
 111     if (ec_import != NULL) {
 112         EC_KEY *eckey;
 113
 114         /* vctx == provctx */
 115         if ((eckey = ec_new(vctx)) != NULL
 116             && ec_import(eckey, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
 117             && ec_param_print(vctx, eckey, out, cb, cbarg))
 118             ok = 1;
 119         ec_free(eckey);
 120     }
 121     return ok;
 122 }
 123
 124 static int ec_param_print(void *vctx, void *eckey, BIO *out,
 125                            OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 126 {
 127     return ossl_prov_print_eckey(out, eckey, ec_print_params);
 128 }
 129
 130 const OSSL_DISPATCH ec_param_der_serializer_functions[] = {
 131     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_param_newctx },
 132     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_param_freectx },
 133     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))ec_param_der_data },
 134     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_param_der },
 135     { 0, NULL }
 136 };
 137
 138 const OSSL_DISPATCH ec_param_pem_serializer_functions[] = {
 139     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_param_newctx },
 140     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_param_freectx },
 141     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))ec_param_pem_data },
 142     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_param_pem },
 143     { 0, NULL }
 144 };
 145
 146 const OSSL_DISPATCH ec_param_text_serializer_functions[] = {
 147     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))ec_param_newctx },
 148     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))ec_param_freectx },
 149     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))ec_param_print },
 150     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 151       (void (*)(void))ec_param_print_data },
 152     { 0, NULL }
 153 };