providers/implementations/serializers/serializer_dh_pub.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/err.h>
  18 #include <openssl/pem.h>
  19 #include <openssl/dh.h>
  20 #include <openssl/types.h>
  21 #include <openssl/params.h>
  22 #include "prov/bio.h"
  23 #include "prov/implementations.h"
  24 #include "prov/provider_ctx.h"
  25 #include "serializer_local.h"
  26
  27 static OSSL_OP_serializer_newctx_fn dh_pub_newctx;
  28 static OSSL_OP_serializer_freectx_fn dh_pub_freectx;
  29 static OSSL_OP_serializer_serialize_data_fn dh_pub_der_data;
  30 static OSSL_OP_serializer_serialize_object_fn dh_pub_der;
  31 static OSSL_OP_serializer_serialize_data_fn dh_pub_pem_data;
  32 static OSSL_OP_serializer_serialize_object_fn dh_pub_pem;
  33
  34 static OSSL_OP_serializer_serialize_data_fn dh_pub_print_data;
  35 static OSSL_OP_serializer_serialize_object_fn dh_pub_print;
  36
  37 /* Public key : context */
  38
  39 /*
  40  * There's no specific implementation context, so we use the provider context
  41  */
  42 static void *dh_pub_newctx(void *provctx)
  43 {
  44     return provctx;
  45 }
  46
  47 static void dh_pub_freectx(void *ctx)
  48 {
  49 }
  50
  51 /* Public key : DER */
  52 static int dh_pub_der_data(void *ctx, const OSSL_PARAM params[],
  53                             OSSL_CORE_BIO *out,
  54                             OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  55 {
  56     OSSL_OP_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
  57     OSSL_OP_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
  58     OSSL_OP_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_KEYPAIR, params)
  67             && dh_pub_der(ctx, dh, out, cb, cbarg))
  68             ok = 1;
  69         dh_free(dh);
  70     }
  71     return ok;
  72 }
  73
  74 static int dh_pub_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
  83     ret = ossl_prov_write_pub_der_from_obj(out, dh, EVP_PKEY_DH,
  84                                            ossl_prov_prepare_dh_params,
  85                                            ossl_prov_dh_pub_to_der);
  86     BIO_free(out);
  87
  88     return ret;
  89 }
  90
  91 /* Public key : PEM */
  92 static int dh_pub_pem_data(void *ctx, const OSSL_PARAM params[],
  93                            OSSL_CORE_BIO *out,
  94                            OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  95 {
  96     OSSL_OP_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
  97     OSSL_OP_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
  98     OSSL_OP_keymgmt_import_fn *dh_import = ossl_prov_get_keymgmt_dh_import();
  99     int ok = 0;
 100
 101     if (dh_import != NULL) {
 102         DH *dh;
 103
 104         /* ctx == provctx */
 105         if ((dh = dh_new(ctx)) != NULL
 106             && dh_import(dh, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 107             && dh_pub_pem(ctx, dh, out, cb, cbarg))
 108             ok = 1;
 109         dh_free(dh);
 110     }
 111     return ok;
 112 }
 113
 114 static int dh_pub_pem(void *ctx, void *dh, OSSL_CORE_BIO *cout,
 115                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 116 {
 117     BIO *out = bio_new_from_core_bio(ctx, cout);
 118     int ret;
 119
 120     if (out == NULL)
 121         return 0;
 122
 123     ret = ossl_prov_write_pub_pem_from_obj(out, dh, EVP_PKEY_DH,
 124                                            ossl_prov_prepare_dh_params,
 125                                            ossl_prov_dh_pub_to_der);
 126     BIO_free(out);
 127
 128     return ret;
 129 }
 130
 131 static int dh_pub_print_data(void *ctx, const OSSL_PARAM params[],
 132                              OSSL_CORE_BIO *out,
 133                              OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 134 {
 135     OSSL_OP_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
 136     OSSL_OP_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
 137     OSSL_OP_keymgmt_import_fn *dh_import = ossl_prov_get_keymgmt_dh_import();
 138     int ok = 0;
 139
 140     if (dh_import != NULL) {
 141         DH *dh;
 142
 143         /* ctx == provctx */
 144         if ((dh = dh_new(ctx)) != NULL
 145             && dh_import(dh, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 146             && dh_pub_print(ctx, dh, out, cb, cbarg))
 147             ok = 1;
 148         dh_free(dh);
 149     }
 150     return ok;
 151 }
 152
 153 static int dh_pub_print(void *ctx, void *dh, OSSL_CORE_BIO *cout,
 154                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 155 {
 156     BIO *out = bio_new_from_core_bio(ctx, cout);
 157     int ret;
 158
 159     if (out == NULL)
 160         return 0;
 161
 162     ret = ossl_prov_print_dh(out, dh, dh_print_pub);
 163     BIO_free(out);
 164
 165     return ret;
 166 }
 167
 168 const OSSL_DISPATCH dh_pub_der_serializer_functions[] = {
 169     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dh_pub_newctx },
 170     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dh_pub_freectx },
 171     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dh_pub_der_data },
 172     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dh_pub_der },
 173     { 0, NULL }
 174 };
 175
 176 const OSSL_DISPATCH dh_pub_pem_serializer_functions[] = {
 177     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dh_pub_newctx },
 178     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dh_pub_freectx },
 179     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dh_pub_pem_data },
 180     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dh_pub_pem },
 181     { 0, NULL }
 182 };
 183
 184 const OSSL_DISPATCH dh_pub_text_serializer_functions[] = {
 185     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dh_pub_newctx },
 186     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dh_pub_freectx },
 187     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dh_pub_print },
 188     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 189       (void (*)(void))dh_pub_print_data },
 190     { 0, NULL }
 191 };