VirtualBox

source: vbox/trunk/src/libs/openssl-3.1.5/providers/implementations/encode_decode/encode_key2ms.c@ 104305

Last change on this file since 104305 was 104078, checked in by vboxsync, 11 months ago

openssl-3.1.5: Applied and adjusted our OpenSSL changes to 3.1.4. bugref:10638
File size: 9.2 KB
Line 
1/*
2 * Copyright 2020-2022 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 * Low level APIs are deprecated for public use, but still ok for internal use.
12 */
13#include "internal/deprecated.h"
14
15#include <string.h>
16#include <openssl/core.h>
17#include <openssl/core_dispatch.h>
18#include <openssl/core_names.h>
19#include <openssl/params.h>
20#include <openssl/err.h>
21#include <openssl/pem.h> /* Functions for writing MSBLOB and PVK */
22#include <openssl/dsa.h>
23#include "internal/passphrase.h"
24#include "crypto/rsa.h"
25#include "prov/implementations.h"
26#include "prov/bio.h"
27#include "prov/provider_ctx.h"
28#include "endecoder_local.h"
29
30struct key2ms_ctx_st {
31 PROV_CTX *provctx;
32
33 int pvk_encr_level;
34
35 struct ossl_passphrase_data_st pwdata;
36};
37
38static int write_msblob(struct key2ms_ctx_st *ctx, OSSL_CORE_BIO *cout,
39 EVP_PKEY *pkey, int ispub)
40{
41 BIO *out = ossl_bio_new_from_core_bio(ctx->provctx, cout);
42 int ret;
43
44 if (out == NULL)
45 return 0;
46 ret = ispub ? i2b_PublicKey_bio(out, pkey) : i2b_PrivateKey_bio(out, pkey);
47
48 BIO_free(out);
49 return ret;
50}
51
52static int write_pvk(struct key2ms_ctx_st *ctx, OSSL_CORE_BIO *cout,
53 EVP_PKEY *pkey)
54{
55 BIO *out = NULL;
56 int ret;
57 OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(ctx->provctx);
58
59 out = ossl_bio_new_from_core_bio(ctx->provctx, cout);
60 if (out == NULL)
61 return 0;
62 ret = i2b_PVK_bio_ex(out, pkey, ctx->pvk_encr_level,
63 ossl_pw_pvk_password, &ctx->pwdata, libctx, NULL);
64 BIO_free(out);
65 return ret;
66}
67
68static OSSL_FUNC_encoder_freectx_fn key2ms_freectx;
69static OSSL_FUNC_encoder_does_selection_fn key2ms_does_selection;
70
71static struct key2ms_ctx_st *key2ms_newctx(void *provctx)
72{
73 struct key2ms_ctx_st *ctx = OPENSSL_zalloc(sizeof(*ctx));
74
75 if (ctx != NULL) {
76 ctx->provctx = provctx;
77 /* This is the strongest encryption level */
78 ctx->pvk_encr_level = 2;
79 }
80 return ctx;
81}
82
83static void key2ms_freectx(void *vctx)
84{
85 struct key2ms_ctx_st *ctx = vctx;
86
87 ossl_pw_clear_passphrase_data(&ctx->pwdata);
88 OPENSSL_free(ctx);
89}
90
91static const OSSL_PARAM *key2pvk_settable_ctx_params(ossl_unused void *provctx)
92{
93 static const OSSL_PARAM settables[] = {
94 OSSL_PARAM_int(OSSL_ENCODER_PARAM_ENCRYPT_LEVEL, NULL),
95 OSSL_PARAM_END,
96 };
97
98 return settables;
99}
100
101static int key2pvk_set_ctx_params(void *vctx, const OSSL_PARAM params[])
102{
103 struct key2ms_ctx_st *ctx = vctx;
104 const OSSL_PARAM *p;
105
106 p = OSSL_PARAM_locate_const(params, OSSL_ENCODER_PARAM_ENCRYPT_LEVEL);
107 if (p != NULL && !OSSL_PARAM_get_int(p, &ctx->pvk_encr_level))
108 return 0;
109 return 1;
110}
111
112static int key2ms_does_selection(void *vctx, int selection)
113{
114 return (selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0;
115}
116
117/*
118 * The real EVP_PKEY_set1_TYPE() functions take a non-const key, while the key
119 * pointer in the encode function is a const pointer. We violate the constness
120 * knowingly, since we know that the key comes from the same provider, is never
121 * actually const, and the implied reference count change is safe.
122 *
123 * EVP_PKEY_assign() can't be used, because there's no way to clear the internal
124 * key using that function without freeing the existing internal key.
125 */
126typedef int evp_pkey_set1_fn(EVP_PKEY *, const void *key);
127
128static int key2msblob_encode(void *vctx, const void *key, int selection,
129 OSSL_CORE_BIO *cout, evp_pkey_set1_fn *set1_key,
130 OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
131{
132 struct key2ms_ctx_st *ctx = vctx;
133 int ispub = -1;
134 EVP_PKEY *pkey = NULL;
135 int ok = 0;
136
137 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
138 ispub = 0;
139 else if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
140 ispub = 1;
141 else
142 return 0; /* Error */
143
144 if ((pkey = EVP_PKEY_new()) != NULL && set1_key(pkey, key))
145 ok = write_msblob(ctx, cout, pkey, ispub);
146 EVP_PKEY_free(pkey);
147 return ok;
148}
149
150static int key2pvk_encode(void *vctx, const void *key, int selection,
151 OSSL_CORE_BIO *cout, evp_pkey_set1_fn *set1_key,
152 OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
153{
154 struct key2ms_ctx_st *ctx = vctx;
155 EVP_PKEY *pkey = NULL;
156 int ok = 0;
157
158 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) == 0)
159 return 0; /* Error */
160
161 if ((pkey = EVP_PKEY_new()) != NULL && set1_key(pkey, key)
162 && (pw_cb == NULL
163 || ossl_pw_set_ossl_passphrase_cb(&ctx->pwdata, pw_cb, pw_cbarg)))
164 ok = write_pvk(ctx, cout, pkey);
165 EVP_PKEY_free(pkey);
166 return ok;
167}
168
169#define dsa_set1 (evp_pkey_set1_fn *)EVP_PKEY_set1_DSA
170#define rsa_set1 (evp_pkey_set1_fn *)EVP_PKEY_set1_RSA
171
172#define msblob_set_params
173#define pvk_set_params \
174 { OSSL_FUNC_ENCODER_SETTABLE_CTX_PARAMS, \
175 (void (*)(void))key2pvk_settable_ctx_params }, \
176 { OSSL_FUNC_ENCODER_SET_CTX_PARAMS, \
177 (void (*)(void))key2pvk_set_ctx_params },
178
179#define MAKE_MS_ENCODER(impl, output, type) \
180 static OSSL_FUNC_encoder_import_object_fn \
181 impl##2##output##_import_object; \
182 static OSSL_FUNC_encoder_free_object_fn impl##2##output##_free_object; \
183 static OSSL_FUNC_encoder_encode_fn impl##2##output##_encode; \
184 \
185 static void * \
186 impl##2##output##_import_object(void *ctx, int selection, \
187 const OSSL_PARAM params[]) \
188 { \
189 return ossl_prov_import_key(ossl_##impl##_keymgmt_functions, \
190 ctx, selection, params); \
191 } \
192 static void impl##2##output##_free_object(void *key) \
193 { \
194 ossl_prov_free_key(ossl_##impl##_keymgmt_functions, key); \
195 } \
196 static int impl##2##output##_encode(void *vctx, OSSL_CORE_BIO *cout, \
197 const void *key, \
198 const OSSL_PARAM key_abstract[], \
199 int selection, \
200 OSSL_PASSPHRASE_CALLBACK *cb, \
201 void *cbarg) \
202 { \
203 /* We don't deal with abstract objects */ \
204 if (key_abstract != NULL) { \
205 ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT); \
206 return 0; \
207 } \
208 return key2##output##_encode(vctx, key, selection, cout, type##_set1, \
209 cb, cbarg); \
210 } \
211 const OSSL_DISPATCH ossl_##impl##_to_##output##_encoder_functions[] = { \
212 { OSSL_FUNC_ENCODER_NEWCTX, \
213 (void (*)(void))key2ms_newctx }, \
214 { OSSL_FUNC_ENCODER_FREECTX, \
215 (void (*)(void))key2ms_freectx }, \
216 output##_set_params \
217 { OSSL_FUNC_ENCODER_DOES_SELECTION, \
218 (void (*)(void))key2ms_does_selection }, \
219 { OSSL_FUNC_ENCODER_IMPORT_OBJECT, \
220 (void (*)(void))impl##2##output##_import_object }, \
221 { OSSL_FUNC_ENCODER_FREE_OBJECT, \
222 (void (*)(void))impl##2##output##_free_object }, \
223 { OSSL_FUNC_ENCODER_ENCODE, \
224 (void (*)(void))impl##2##output##_encode }, \
225 { 0, NULL } \
226 }
227
228#ifndef OPENSSL_NO_DSA
229MAKE_MS_ENCODER(dsa, pvk, dsa);
230MAKE_MS_ENCODER(dsa, msblob, dsa);
231#endif
232
233MAKE_MS_ENCODER(rsa, pvk, rsa);
234MAKE_MS_ENCODER(rsa, msblob, rsa);
Note: See TracBrowser for help on using the repository browser.

© 2024 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette