providers/implementations/serializers/serializer_dsa_pub.c

   1 /*
   2  * Copyright 2019 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_numbers.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 "serializer_local.h"
  25
  26 static OSSL_OP_serializer_newctx_fn dsa_pub_newctx;
  27 static OSSL_OP_serializer_freectx_fn dsa_pub_freectx;
  28 static OSSL_OP_serializer_serialize_data_fn dsa_pub_der_data;
  29 static OSSL_OP_serializer_serialize_object_fn dsa_pub_der;
  30 static OSSL_OP_serializer_serialize_data_fn dsa_pub_pem_data;
  31 static OSSL_OP_serializer_serialize_object_fn dsa_pub_pem;
  32
  33 static OSSL_OP_serializer_serialize_data_fn dsa_pub_print_data;
  34 static OSSL_OP_serializer_serialize_object_fn dsa_pub_print;
  35
  36 /* Public key : context */
  37
  38 /*
  39  * There's no specific implementation context, so we use the provider context
  40  */
  41 static void *dsa_pub_newctx(void *provctx)
  42 {
  43     return provctx;
  44 }
  45
  46 static void dsa_pub_freectx(void *ctx)
  47 {
  48 }
  49
  50 /* Public key : DER */
  51 static int dsa_pub_der_data(void *ctx, const OSSL_PARAM params[], BIO *out,
  52                             OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  53 {
  54     OSSL_OP_keymgmt_new_fn *dsa_new = ossl_prov_get_keymgmt_dsa_new();
  55     OSSL_OP_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
  56     OSSL_OP_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
  57     int ok = 0;
  58
  59     if (dsa_import != NULL) {
  60         DSA *dsa;
  61
  62         /* ctx == provctx */
  63         if ((dsa = dsa_new(ctx)) != NULL
  64             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
  65             && dsa_pub_der(ctx, dsa, out, cb, cbarg))
  66             ok = 1;
  67         dsa_free(dsa);
  68     }
  69     return ok;
  70 }
  71
  72 static int dsa_pub_der(void *ctx, void *dsa, BIO *out,
  73                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  74 {
  75     /*
  76      * TODO(v3.0) implement setting save_parameters, see dsa_pub_encode()
  77      * in crypto/dsa/dsa_ameth.c
  78      */
  79     int save_parameters = 1;
  80
  81     return
  82         save_parameters
  83         ? ossl_prov_write_pub_der_from_obj(out, dsa, EVP_PKEY_DSA,
  84                                            ossl_prov_prepare_all_dsa_params,
  85                                            ossl_prov_dsa_pub_to_der)
  86         : ossl_prov_write_pub_der_from_obj(out, dsa, EVP_PKEY_DSA,
  87                                            ossl_prov_prepare_dsa_params,
  88                                            ossl_prov_dsa_pub_to_der);
  89
  90 }
  91
  92 /* Public key : PEM */
  93 static int dsa_pub_pem_data(void *ctx, const OSSL_PARAM params[], BIO *out,
  94                             OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  95 {
  96     OSSL_OP_keymgmt_new_fn *dsa_new = ossl_prov_get_keymgmt_dsa_new();
  97     OSSL_OP_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
  98     OSSL_OP_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
  99     int ok = 0;
 100
 101     if (dsa_import != NULL) {
 102         DSA *dsa;
 103
 104         /* ctx == provctx */
 105         if ((dsa = dsa_new(ctx)) != NULL
 106             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 107             && dsa_pub_pem(ctx, dsa, out, cb, cbarg))
 108             ok = 1;
 109         dsa_free(dsa);
 110     }
 111     return ok;
 112 }
 113
 114 static int dsa_pub_pem(void *ctx, void *dsa, BIO *out,
 115                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 116 {
 117     return ossl_prov_write_pub_pem_from_obj(out, dsa, EVP_PKEY_DSA,
 118                                             ossl_prov_prepare_dsa_params,
 119                                             ossl_prov_dsa_pub_to_der);
 120 }
 121
 122 static int dsa_pub_print_data(void *ctx, const OSSL_PARAM params[], BIO *out,
 123                               OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 124 {
 125     OSSL_OP_keymgmt_new_fn *dsa_new = ossl_prov_get_keymgmt_dsa_new();
 126     OSSL_OP_keymgmt_free_fn *dsa_free = ossl_prov_get_keymgmt_dsa_free();
 127     OSSL_OP_keymgmt_import_fn *dsa_import = ossl_prov_get_keymgmt_dsa_import();
 128     int ok = 0;
 129
 130     if (dsa_import != NULL) {
 131         DSA *dsa;
 132
 133         /* ctx == provctx */
 134         if ((dsa = dsa_new(ctx)) != NULL
 135             && dsa_import(dsa, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 136             && dsa_pub_print(ctx, dsa, out, cb, cbarg))
 137             ok = 1;
 138         dsa_free(dsa);
 139     }
 140     return ok;
 141 }
 142
 143 static int dsa_pub_print(void *ctx, void *dsa, BIO *out,
 144                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 145 {
 146     return ossl_prov_print_dsa(out, dsa, 0);
 147 }
 148
 149 const OSSL_DISPATCH dsa_pub_der_serializer_functions[] = {
 150     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 151     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 152     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_pub_der_data },
 153     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_der },
 154     { 0, NULL }
 155 };
 156
 157 const OSSL_DISPATCH dsa_pub_pem_serializer_functions[] = {
 158     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 159     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 160     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_pub_pem_data },
 161     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_pem },
 162     { 0, NULL }
 163 };
 164
 165 const OSSL_DISPATCH dsa_pub_text_serializer_functions[] = {
 166     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 167     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 168     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_print },
 169     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 170       (void (*)(void))dsa_pub_print_data },
 171     { 0, NULL }
 172 };