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
20static OSSL_OP_serializer_newctx_fn dsa_pub_newctx;
21static OSSL_OP_serializer_freectx_fn dsa_pub_freectx;
22static OSSL_OP_serializer_serialize_data_fn dsa_pub_der_data;
23static OSSL_OP_serializer_serialize_object_fn dsa_pub_der;
24static OSSL_OP_serializer_serialize_data_fn dsa_pub_pem_data;
25static OSSL_OP_serializer_serialize_object_fn dsa_pub_pem;
26
27static OSSL_OP_serializer_serialize_data_fn dsa_pub_print_data;
28static 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 */
35static void *dsa_pub_newctx(void *provctx)
36{
37 return provctx;
38}
39
40static void dsa_pub_freectx(void *ctx)
41{
42}
43
44/* Public key : DER */
45static 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
61static 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 */
82static 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
98static 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
106static 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
122static 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
128const 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
136const 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
144const 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};
152