providers/implementations/serializers/serializer_dsa_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  * 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/pem.h>
  18 #include <openssl/dsa.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 dsa_param_newctx;
  28 static OSSL_FUNC_serializer_freectx_fn dsa_param_freectx;
  29 static OSSL_FUNC_serializer_serialize_data_fn dsa_param_der_data;
  30 static OSSL_FUNC_serializer_serialize_object_fn dsa_param_der;
  31 static OSSL_FUNC_serializer_serialize_data_fn dsa_param_pem_data;
  32 static OSSL_FUNC_serializer_serialize_object_fn dsa_param_pem;
  33
  34 static OSSL_FUNC_serializer_serialize_data_fn dsa_param_print_data;
  35 static OSSL_FUNC_serializer_serialize_object_fn dsa_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 *dsa_param_newctx(void *provctx)
  43 {
  44     return provctx;
  45 }
  46
  47 static void dsa_param_freectx(void *ctx)
  48 {
  49 }
  50
  51 /* Public key : DER */
  52 static int dsa_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 *dsa_new = ossl_prov_get_keymgmt_dsa_new();
  57     OSSL_FUNC_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
  58     OSSL_FUNC_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_ALL_PARAMETERS, params)
  67             && dsa_param_der(ctx, dsa, out, cb, cbarg))
  68             ok = 1;
  69         dsa_free(dsa);
  70     }
  71     return ok;
  72 }
  73
  74 static int dsa_param_der(void *ctx, void *dsa, 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 = i2d_DSAparams_bio(out, dsa);
  84     BIO_free(out);
  85
  86     return ret;
  87 }
  88
  89 /* Public key : PEM */
  90 static int dsa_param_pem_data(void *ctx, const OSSL_PARAM params[],
  91                               OSSL_CORE_BIO *out,
  92                               OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  93 {
  94     OSSL_FUNC_keymgmt_new_fn *dsa_new = ossl_prov_get_keymgmt_dsa_new();
  95     OSSL_FUNC_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
  96     OSSL_FUNC_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
  97     int ok = 0;
  98
  99     if (dsa_import != NULL) {
 100         DSA *dsa;
 101
 102         /* ctx == provctx */
 103         if ((dsa = dsa_new(ctx)) != NULL
 104             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
 105             && dsa_param_pem(ctx, dsa, out, cb, cbarg))
 106             ok = 1;
 107         dsa_free(dsa);
 108     }
 109     return ok;
 110 }
 111
 112 static int dsa_param_pem(void *ctx, void *dsa, OSSL_CORE_BIO *cout,
 113                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 114 {
 115     BIO *out = bio_new_from_core_bio(ctx, cout);
 116     int ret;
 117
 118     if (out == NULL)
 119         return 0;
 120
 121     ret = PEM_write_bio_DSAparams(out, dsa);
 122     BIO_free(out);
 123
 124     return ret;
 125 }
 126
 127 static int dsa_param_print_data(void *ctx, const OSSL_PARAM params[],
 128                                 OSSL_CORE_BIO *out,
 129                                 OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 130 {
 131     OSSL_FUNC_keymgmt_new_fn *dsa_new = ossl_prov_get_keymgmt_dsa_new();
 132     OSSL_FUNC_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
 133     OSSL_FUNC_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
 134     int ok = 0;
 135
 136     if (dsa_import != NULL) {
 137         DSA *dsa;
 138
 139         /* ctx == provctx */
 140         if ((dsa = dsa_new(ctx)) != NULL
 141             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_ALL_PARAMETERS, params)
 142             && dsa_param_print(ctx, dsa, out, cb, cbarg))
 143             ok = 1;
 144         dsa_free(dsa);
 145     }
 146     return ok;
 147 }
 148
 149 static int dsa_param_print(void *ctx, void *dsa, OSSL_CORE_BIO *cout,
 150                            OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 151 {
 152     BIO *out = bio_new_from_core_bio(ctx, cout);
 153     int ret;
 154
 155     if (out == NULL)
 156         return 0;
 157
 158     ret = ossl_prov_print_dsa(out, dsa, dsa_print_params);
 159     BIO_free(out);
 160
 161     return ret;
 162 }
 163
 164 const OSSL_DISPATCH dsa_param_der_serializer_functions[] = {
 165     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_param_newctx },
 166     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_param_freectx },
 167     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_param_der_data },
 168     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_param_der },
 169     { 0, NULL }
 170 };
 171
 172 const OSSL_DISPATCH dsa_param_pem_serializer_functions[] = {
 173     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_param_newctx },
 174     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_param_freectx },
 175     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_param_pem_data },
 176     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_param_pem },
 177     { 0, NULL }
 178 };
 179
 180 const OSSL_DISPATCH dsa_param_text_serializer_functions[] = {
 181     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_param_newctx },
 182     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_param_freectx },
 183     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_param_print },
 184     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 185       (void (*)(void))dsa_param_print_data },
 186     { 0, NULL }
 187 };