providers/implementations/serializers/serializer_dh_param.c

   1 /*
   2  * Copyright 2019-2020 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 /*
  11  * DH low level APIs are deprecated for public use, but still ok for
  12  * internal use.
  13  */
  14 #include "internal/deprecated.h"
  15
  16 #include <openssl/core_dispatch.h>
  17 #include <openssl/pem.h>
  18 #include <openssl/dh.h>
  19 #include <openssl/types.h>
  20 #include <openssl/params.h>
  21 #include "prov/bio.h"
  22 #include "prov/implementations.h"
  23 #include "prov/providercommonerr.h"
  24 #include "prov/provider_ctx.h"
  25 #include "serializer_local.h"
  26
  27 static OSSL_FUNC_serializer_newctx_fn dh_param_newctx;
  28 static OSSL_FUNC_serializer_freectx_fn dh_param_freectx;
  29 static OSSL_FUNC_serializer_serialize_data_fn dh_param_der_data;
  30 static OSSL_FUNC_serializer_serialize_object_fn dh_param_der;
  31 static OSSL_FUNC_serializer_serialize_data_fn dh_param_pem_data;
  32 static OSSL_FUNC_serializer_serialize_object_fn dh_param_pem;
  33
  34 static OSSL_FUNC_serializer_serialize_data_fn dh_param_print_data;
  35 static OSSL_FUNC_serializer_serialize_object_fn dh_param_print;
  36
  37 /* Parameters : context */
  38
  39 /*
  40  * There's no specific implementation context, so we use the provider context
  41  */
  42 static void *dh_param_newctx(void *provctx)
  43 {
  44     return provctx;
  45 }
  46
  47 static void dh_param_freectx(void *ctx)
  48 {
  49 }
  50
  51 /* Public key : DER */
  52 static int dh_param_der_data(void *ctx, const OSSL_PARAM params[],
  53                              OSSL_CORE_BIO *out,
  54                              OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  55 {
  56     OSSL_FUNC_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
  57     OSSL_FUNC_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
  58     OSSL_FUNC_keymgmt_import_fn *dh_import = ossl_prov_get_keymgmt_dh_import();
  59     int ok = 0;
  60
  61     if (dh_import != NULL) {
  62         DH *dh;
  63
  64         /* ctx == provctx */
  65         if ((dh = dh_new(ctx)) != NULL
  66             && dh_import(dh, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
  67             && dh_param_der(ctx, dh, out, cb, cbarg))
  68             ok = 1;
  69         dh_free(dh);
  70     }
  71     return ok;
  72 }
  73
  74 static int dh_param_der(void *ctx, void *dh, OSSL_CORE_BIO *cout,
  75                         OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  76 {
  77     BIO *out = bio_new_from_core_bio(ctx, cout);
  78     int ret;
  79
  80     if (out == NULL)
  81         return 0;
  82     ret = i2d_DHparams_bio(out, dh);
  83     BIO_free(out);
  84
  85     return ret;
  86 }
  87
  88 /* Public key : PEM */
  89 static int dh_param_pem_data(void *ctx, const OSSL_PARAM params[],
  90                              OSSL_CORE_BIO *out,
  91                              OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  92 {
  93     OSSL_FUNC_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
  94     OSSL_FUNC_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
  95     OSSL_FUNC_keymgmt_import_fn *dh_import = ossl_prov_get_keymgmt_dh_import();
  96     int ok = 0;
  97
  98     if (dh_import != NULL) {
  99         DH *dh;
 100
 101         /* ctx == provctx */
 102         if ((dh = dh_new(ctx)) != NULL
 103             && dh_import(dh, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
 104             && dh_param_pem(ctx, dh, out, cb, cbarg))
 105             ok = 1;
 106         dh_free(dh);
 107     }
 108     return ok;
 109 }
 110
 111 static int dh_param_pem(void *ctx, void *dh, OSSL_CORE_BIO *cout,
 112                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 113 {
 114     BIO *out = bio_new_from_core_bio(ctx, cout);
 115     int ret;
 116
 117     if (out == NULL)
 118         return 0;
 119
 120     ret = PEM_write_bio_DHparams(out, dh);
 121     BIO_free(out);
 122
 123     return ret;
 124 }
 125
 126 static int dh_param_print_data(void *ctx, const OSSL_PARAM params[],
 127                                OSSL_CORE_BIO *out,
 128                                OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 129 {
 130     OSSL_FUNC_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
 131     OSSL_FUNC_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
 132     OSSL_FUNC_keymgmt_import_fn *dh_import = ossl_prov_get_keymgmt_dh_import();
 133     int ok = 0;
 134
 135     if (dh_import != NULL) {
 136         DH *dh;
 137
 138         /* ctx == provctx */
 139         if ((dh = dh_new(ctx)) != NULL
 140             && dh_import(dh, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
 141             && dh_param_print(ctx, dh, out, cb, cbarg))
 142             ok = 1;
 143         dh_free(dh);
 144     }
 145     return ok;
 146 }
 147
 148 static int dh_param_print(void *ctx, void *dh, OSSL_CORE_BIO *cout,
 149                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 150 {
 151     BIO *out = bio_new_from_core_bio(ctx, cout);
 152     int ret;
 153
 154     if (out == NULL)
 155         return 0;
 156
 157     ret = ossl_prov_print_dh(out, dh, dh_print_params);
 158     BIO_free(out);
 159
 160     return ret;
 161 }
 162
 163 const OSSL_DISPATCH dh_param_der_serializer_functions[] = {
 164     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dh_param_newctx },
 165     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dh_param_freectx },
 166     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dh_param_der_data },
 167     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dh_param_der },
 168     { 0, NULL }
 169 };
 170
 171 const OSSL_DISPATCH dh_param_pem_serializer_functions[] = {
 172     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dh_param_newctx },
 173     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dh_param_freectx },
 174     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dh_param_pem_data },
 175     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dh_param_pem },
 176     { 0, NULL }
 177 };
 178
 179 const OSSL_DISPATCH dh_param_text_serializer_functions[] = {
 180     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dh_param_newctx },
 181     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dh_param_freectx },
 182     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dh_param_print },
 183     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 184       (void (*)(void))dh_param_print_data },
 185     { 0, NULL }
 186 };