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 #include <openssl/core_numbers.h>
  11 #include <openssl/err.h>
  12 #include <openssl/pem.h>
  13 #include <openssl/dsa.h>
  14 #include <openssl/types.h>
  15 #include <openssl/params.h>
  16 #include "prov/bio.h"
  17 #include "prov/implementations.h"
  18 #include "serializer_local.h"
  19
  20 static OSSL_OP_serializer_newctx_fn dsa_pub_newctx;
  21 static OSSL_OP_serializer_freectx_fn dsa_pub_freectx;
  22 static OSSL_OP_serializer_serialize_data_fn dsa_pub_der_data;
  23 static OSSL_OP_serializer_serialize_object_fn dsa_pub_der;
  24 static OSSL_OP_serializer_serialize_data_fn dsa_pub_pem_data;
  25 static OSSL_OP_serializer_serialize_object_fn dsa_pub_pem;
  26
  27 static OSSL_OP_serializer_serialize_data_fn dsa_pub_print_data;
  28 static OSSL_OP_serializer_serialize_object_fn dsa_pub_print;
  29
  30 /* Public key : context */
  31
  32 /*
  33  * There's no specific implementation context, so we use the provider context
  34  */
  35 static void *dsa_pub_newctx(void *provctx)
  36 {
  37     return provctx;
  38 }
  39
  40 static void dsa_pub_freectx(void *ctx)
  41 {
  42 }
  43
  44 /* Public key : DER */
  45 static int dsa_pub_der_data(void *ctx, const OSSL_PARAM params[], BIO *out,
  46                             OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  47 {
  48     OSSL_OP_keymgmt_importkey_fn *dsa_importkey =
  49         ossl_prov_get_dsa_importkey();
  50     int ok = 0;
  51
  52     if (dsa_importkey != NULL) {
  53         DSA *dsa = dsa_importkey(ctx, params); /* ctx == provctx */
  54
  55         ok = dsa_pub_der(ctx, dsa, out, cb, cbarg);
  56         DSA_free(dsa);
  57     }
  58     return ok;
  59 }
  60
  61 static int dsa_pub_der(void *ctx, void *dsa, BIO *out,
  62                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  63 {
  64     /*
  65      * TODO(v3.0) implement setting save_parameters, see dsa_pub_encode()
  66      * in crypto/dsa/dsa_ameth.c
  67      */
  68     int save_parameters = 1;
  69
  70     return
  71         save_parameters
  72         ? ossl_prov_write_pub_der_from_obj(out, dsa, EVP_PKEY_DSA,
  73                                            ossl_prov_prepare_all_dsa_params,
  74                                            ossl_prov_dsa_pub_to_der)
  75         : ossl_prov_write_pub_der_from_obj(out, dsa, EVP_PKEY_DSA,
  76                                            ossl_prov_prepare_dsa_params,
  77                                            ossl_prov_dsa_pub_to_der);
  78
  79 }
  80
  81 /* Public key : PEM */
  82 static int dsa_pub_pem_data(void *ctx, const OSSL_PARAM params[], BIO *out,
  83                             OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  84 {
  85     OSSL_OP_keymgmt_importkey_fn *dsa_importkey =
  86         ossl_prov_get_dsa_importkey();
  87     int ok = 0;
  88
  89     if (dsa_importkey != NULL) {
  90         DSA *dsa = dsa_importkey(ctx, params); /* ctx == provctx */
  91
  92         ok = dsa_pub_pem(ctx, dsa, out, cb, cbarg);
  93         DSA_free(dsa);
  94     }
  95     return ok;
  96 }
  97
  98 static int dsa_pub_pem(void *ctx, void *dsa, BIO *out,
  99                        OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 100 {
 101     return ossl_prov_write_pub_pem_from_obj(out, dsa, EVP_PKEY_DSA,
 102                                             ossl_prov_prepare_dsa_params,
 103                                             ossl_prov_dsa_pub_to_der);
 104 }
 105
 106 static int dsa_pub_print_data(void *ctx, const OSSL_PARAM params[], BIO *out,
 107                               OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 108 {
 109     OSSL_OP_keymgmt_importkey_fn *dsa_importkey =
 110         ossl_prov_get_dsa_importkey();
 111     int ok = 0;
 112
 113     if (dsa_importkey != NULL) {
 114         DSA *dsa = dsa_importkey(ctx, params); /* ctx == provctx */
 115
 116         ok = dsa_pub_print(ctx, dsa, out, cb, cbarg);
 117         DSA_free(dsa);
 118     }
 119     return ok;
 120 }
 121
 122 static int dsa_pub_print(void *ctx, void *dsa, BIO *out,
 123                          OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 124 {
 125     return ossl_prov_print_dsa(out, dsa, 0);
 126 }
 127
 128 const OSSL_DISPATCH dsa_pub_der_serializer_functions[] = {
 129     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 130     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 131     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_pub_der_data },
 132     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_der },
 133     { 0, NULL }
 134 };
 135
 136 const OSSL_DISPATCH dsa_pub_pem_serializer_functions[] = {
 137     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 138     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 139     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA, (void (*)(void))dsa_pub_pem_data },
 140     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_pem },
 141     { 0, NULL }
 142 };
 143
 144 const OSSL_DISPATCH dsa_pub_text_serializer_functions[] = {
 145     { OSSL_FUNC_SERIALIZER_NEWCTX, (void (*)(void))dsa_pub_newctx },
 146     { OSSL_FUNC_SERIALIZER_FREECTX, (void (*)(void))dsa_pub_freectx },
 147     { OSSL_FUNC_SERIALIZER_SERIALIZE_OBJECT, (void (*)(void))dsa_pub_print },
 148     { OSSL_FUNC_SERIALIZER_SERIALIZE_DATA,
 149       (void (*)(void))dsa_pub_print_data },
 150     { 0, NULL }
 151 };