providers/implementations/encode_decode/encoder_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 "encoder_local.h"
  26
  27 static OSSL_FUNC_encoder_newctx_fn dh_pub_newctx;
  28 static OSSL_FUNC_encoder_freectx_fn dh_pub_freectx;
  29 static OSSL_FUNC_encoder_encode_data_fn dh_pub_der_data;
  30 static OSSL_FUNC_encoder_encode_object_fn dh_pub_der;
  31 static OSSL_FUNC_encoder_encode_data_fn dh_pub_pem_data;
  32 static OSSL_FUNC_encoder_encode_object_fn dh_pub_pem;
  33
  34 static OSSL_FUNC_encoder_encode_data_fn dh_pub_print_data;
  35 static OSSL_FUNC_encoder_encode_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_FUNC_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
  57     OSSL_FUNC_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
  58     OSSL_FUNC_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,
  84                                            ossl_prov_dh_type_to_evp(dh),
  85                                            ossl_prov_prepare_dh_params,
  86                                            ossl_prov_dh_pub_to_der);
  87     BIO_free(out);
  88
  89     return ret;
  90 }
  91
  92 /* Public key : PEM */
  93 static int dh_pub_pem_data(void *ctx, const OSSL_PARAM params[],
  94                            OSSL_CORE_BIO *out,
  95                            OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
  96 {
  97     OSSL_FUNC_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
  98     OSSL_FUNC_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
  99     OSSL_FUNC_keymgmt_import_fn *dh_import = ossl_prov_get_keymgmt_dh_import();
 100     int ok = 0;
 101
 102     if (dh_import != NULL) {
 103         DH *dh;
 104
 105         /* ctx == provctx */
 106         if ((dh = dh_new(ctx)) != NULL
 107             && dh_import(dh, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 108             && dh_pub_pem(ctx, dh, out, cb, cbarg))
 109             ok = 1;
 110         dh_free(dh);
 111     }
 112     return ok;
 113 }
 114
 115 static int dh_pub_pem(void *ctx, void *dh, OSSL_CORE_BIO *cout,
 116                       OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 117 {
 118     BIO *out = bio_new_from_core_bio(ctx, cout);
 119     int ret;
 120
 121     if (out == NULL)
 122         return 0;
 123
 124     ret = ossl_prov_write_pub_pem_from_obj(out, dh,
 125                                            ossl_prov_dh_type_to_evp(dh),
 126                                            ossl_prov_prepare_dh_params,
 127                                            ossl_prov_dh_pub_to_der);
 128     BIO_free(out);
 129
 130     return ret;
 131 }
 132
 133 static int dh_pub_print_data(void *ctx, const OSSL_PARAM params[],
 134                              OSSL_CORE_BIO *out,
 135                              OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 136 {
 137     OSSL_FUNC_keymgmt_new_fn *dh_new = ossl_prov_get_keymgmt_dh_new();
 138     OSSL_FUNC_keymgmt_free_fn *dh_free = ossl_prov_get_keymgmt_dh_free();
 139     OSSL_FUNC_keymgmt_import_fn *dh_import = ossl_prov_get_keymgmt_dh_import();
 140     int ok = 0;
 141
 142     if (dh_import != NULL) {
 143         DH *dh;
 144
 145         /* ctx == provctx */
 146         if ((dh = dh_new(ctx)) != NULL
 147             && dh_import(dh, OSSL_KEYMGMT_SELECT_KEYPAIR, params)
 148             && dh_pub_print(ctx, dh, out, cb, cbarg))
 149             ok = 1;
 150         dh_free(dh);
 151     }
 152     return ok;
 153 }
 154
 155 static int dh_pub_print(void *ctx, void *dh, OSSL_CORE_BIO *cout,
 156                         OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
 157 {
 158     BIO *out = bio_new_from_core_bio(ctx, cout);
 159     int ret;
 160
 161     if (out == NULL)
 162         return 0;
 163
 164     ret = ossl_prov_print_dh(out, dh, dh_print_pub);
 165     BIO_free(out);
 166
 167     return ret;
 168 }
 169
 170 const OSSL_DISPATCH dh_pub_der_encoder_functions[] = {
 171     { OSSL_FUNC_ENCODER_NEWCTX, (void (*)(void))dh_pub_newctx },
 172     { OSSL_FUNC_ENCODER_FREECTX, (void (*)(void))dh_pub_freectx },
 173     { OSSL_FUNC_ENCODER_ENCODE_DATA, (void (*)(void))dh_pub_der_data },
 174     { OSSL_FUNC_ENCODER_ENCODE_OBJECT, (void (*)(void))dh_pub_der },
 175     { 0, NULL }
 176 };
 177
 178 const OSSL_DISPATCH dh_pub_pem_encoder_functions[] = {
 179     { OSSL_FUNC_ENCODER_NEWCTX, (void (*)(void))dh_pub_newctx },
 180     { OSSL_FUNC_ENCODER_FREECTX, (void (*)(void))dh_pub_freectx },
 181     { OSSL_FUNC_ENCODER_ENCODE_DATA, (void (*)(void))dh_pub_pem_data },
 182     { OSSL_FUNC_ENCODER_ENCODE_OBJECT, (void (*)(void))dh_pub_pem },
 183     { 0, NULL }
 184 };
 185
 186 const OSSL_DISPATCH dh_pub_text_encoder_functions[] = {
 187     { OSSL_FUNC_ENCODER_NEWCTX, (void (*)(void))dh_pub_newctx },
 188     { OSSL_FUNC_ENCODER_FREECTX, (void (*)(void))dh_pub_freectx },
 189     { OSSL_FUNC_ENCODER_ENCODE_OBJECT, (void (*)(void))dh_pub_print },
 190     { OSSL_FUNC_ENCODER_ENCODE_DATA,
 191       (void (*)(void))dh_pub_print_data },
 192     { 0, NULL }
 193 };