providers/implementations/serializers/serializer_dsa_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  * DSA 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/dsa.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 dsa_pub_newctx;
  28 static OSSL_OP_serializer_freectx_fn dsa_pub_freectx;
  29 static OSSL_OP_serializer_serialize_data_fn dsa_pub_der_data;
  30 static OSSL_OP_serializer_serialize_object_fn dsa_pub_der;
  31 static OSSL_OP_serializer_serialize_data_fn dsa_pub_pem_data;
  32 static OSSL_OP_serializer_serialize_object_fn dsa_pub_pem;
  33
  34 static OSSL_OP_serializer_serialize_data_fn dsa_pub_print_data;
  35 static OSSL_OP_serializer_serialize_object_fn dsa_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 *dsa_pub_newctx(void *provctx)
  43 {
  44     return provctx;
  45 }
  46
  47 static void dsa_pub_freectx(void *ctx)
  48 {
  49 }
  50
  51 /* Public key : DER */
  52 static int dsa_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 *dsa_new = ossl_prov_get_keymgmt_dsa_new();
  57     OSSL_OP_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
  58     OSSL_OP_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
  59     int ok = 0;
  60
  61     if (dsa_import != NULL) {
  62         DSA *dsa;
  63
  64         /* ctx == provctx */
  65         if ((dsa = dsa_new(ctx)) != NULL
  66             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
  67             && dsa_pub_der(ctx, dsa, out, cb, cbarg))
  68             ok = 1;
  69         dsa_free(dsa);
  70     }
  71     return ok;
  72 }
  73
  74 static int dsa_pub_der(void *ctx, void *dsa, OSSL_CORE_BIO *cout,
  75                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  76 {
  77     /*
  78      * TODO(v3.0) implement setting save_parameters, see dsa_pub_encode()
  79      * in crypto/dsa/dsa_ameth.c
  80      */
  81     int save_parameters = 1;
  82     BIO *out = bio_new_from_core_bio(ctx, cout);
  83     int ret;
  84
  85     if (out == NULL)
  86         return 0;
  87
  88     ret =
  89         save_parameters
  90         ? ossl_prov_write_pub_der_from_obj(out, dsa, EVP_PKEY_DSA,
  91                                            ossl_prov_prepare_all_dsa_params,
  92                                            ossl_prov_dsa_pub_to_der)
  93         : ossl_prov_write_pub_der_from_obj(out, dsa, EVP_PKEY_DSA,
  94                                            ossl_prov_prepare_dsa_params,
  95                                            ossl_prov_dsa_pub_to_der);
  96
  97     BIO_free(out);
  98
  99     return ret;
 100 }
 101
 102 /* Public key : PEM */
 103 static int dsa_pub_pem_data(void *ctx, const OSSL_PARAM params[],
 104                             OSSL_CORE_BIO *out,
 105                             OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 106 {
 107     OSSL_OP_keymgmt_new_fn *dsa_new = ossl_prov_get_keymgmt_dsa_new();
 108     OSSL_OP_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
 109     OSSL_OP_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
 110     int ok = 0;
 111
 112     if (dsa_import != NULL) {
 113         DSA *dsa;
 114
 115         /* ctx == provctx */
 116         if ((dsa = dsa_new(ctx)) != NULL
 117             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 118             && dsa_pub_pem(ctx, dsa, out, cb, cbarg))
 119             ok = 1;
 120         dsa_free(dsa);
 121     }
 122     return ok;
 123 }
 124
 125 static int dsa_pub_pem(void *ctx, void *dsa, OSSL_CORE_BIO *cout,
 126                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 127 {
 128     BIO *out = bio_new_from_core_bio(ctx, cout);
 129     int ret;
 130
 131     if (out == NULL)
 132         return 0;
 133
 134     ret = ossl_prov_write_pub_pem_from_obj(out, dsa, EVP_PKEY_DSA,
 135                                            ossl_prov_prepare_dsa_params,
 136                                            ossl_prov_dsa_pub_to_der);
 137
 138     BIO_free(out);
 139
 140     return ret;
 141 }
 142
 143 static int dsa_pub_print_data(void *ctx, const OSSL_PARAM params[],
 144                               OSSL_CORE_BIO *out,
 145                               OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 146 {
 147     OSSL_OP_keymgmt_new_fn *dsa_new = ossl_prov_get_keymgmt_dsa_new();
 148     OSSL_OP_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
 149     OSSL_OP_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
 150     int ok = 0;
 151
 152     if (dsa_import != NULL) {
 153         DSA *dsa;
 154
 155         /* ctx == provctx */
 156         if ((dsa = dsa_new(ctx)) != NULL
 157             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 158             && dsa_pub_print(ctx, dsa, out, cb, cbarg))
 159             ok = 1;
 160         dsa_free(dsa);
 161     }
 162     return ok;
 163 }
 164
 165 static int dsa_pub_print(void *ctx, void *dsa, OSSL_CORE_BIO *cout,
 166                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 167 {
 168     BIO *out = bio_new_from_core_bio(ctx, cout);
 169     int ret;
 170
 171     if (out == NULL)
 172         return 0;
 173
 174     ret = ossl_prov_print_dsa(out, dsa, 0);
 175     BIO_free(out);
 176
 177     return ret;
 178 }
 179
 180 const OSSL_DISPATCH dsa_pub_der_serializer_functions[] = {
 181     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 182     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 183     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_pub_der_data },
 184     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_der },
 185     { 0, NULL }
 186 };
 187
 188 const OSSL_DISPATCH dsa_pub_pem_serializer_functions[] = {
 189     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 190     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 191     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_pub_pem_data },
 192     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_pem },
 193     { 0, NULL }
 194 };
 195
 196 const OSSL_DISPATCH dsa_pub_text_serializer_functions[] = {
 197     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 198     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 199     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_print },
 200     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 201       (void (*)(void))dsa_pub_print_data },
 202     { 0, NULL }
 203 };