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source: vbox/trunk/src/libs/openssl-3.1.0/providers/implementations/kdfs/pkcs12kdf.c@ 100947

Last change on this file since 100947 was 99366, checked in by vboxsync, 22 months ago

openssl-3.1.0: Applied and adjusted our OpenSSL changes to 3.0.7. bugref:10418
File size: 9.5 KB
Line 
1/*
2 * Copyright 1999-2022 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#include <openssl/trace.h>
11#include <stdlib.h>
12#include <stdarg.h>
13#include <string.h>
14#include <openssl/evp.h>
15#include <openssl/kdf.h>
16#include <openssl/core_names.h>
17#include <openssl/proverr.h>
18#include "internal/cryptlib.h"
19#include "internal/numbers.h"
20#include "crypto/evp.h"
21#include "prov/provider_ctx.h"
22#include "prov/providercommon.h"
23#include "prov/implementations.h"
24#include "prov/provider_util.h"
25
26static OSSL_FUNC_kdf_newctx_fn kdf_pkcs12_new;
27static OSSL_FUNC_kdf_dupctx_fn kdf_pkcs12_dup;
28static OSSL_FUNC_kdf_freectx_fn kdf_pkcs12_free;
29static OSSL_FUNC_kdf_reset_fn kdf_pkcs12_reset;
30static OSSL_FUNC_kdf_derive_fn kdf_pkcs12_derive;
31static OSSL_FUNC_kdf_settable_ctx_params_fn kdf_pkcs12_settable_ctx_params;
32static OSSL_FUNC_kdf_set_ctx_params_fn kdf_pkcs12_set_ctx_params;
33static OSSL_FUNC_kdf_gettable_ctx_params_fn kdf_pkcs12_gettable_ctx_params;
34static OSSL_FUNC_kdf_get_ctx_params_fn kdf_pkcs12_get_ctx_params;
35
36typedef struct {
37 void *provctx;
38 PROV_DIGEST digest;
39 unsigned char *pass;
40 size_t pass_len;
41 unsigned char *salt;
42 size_t salt_len;
43 uint64_t iter;
44 int id;
45} KDF_PKCS12;
46
47/* PKCS12 compatible key/IV generation */
48
49static int pkcs12kdf_derive(const unsigned char *pass, size_t passlen,
50 const unsigned char *salt, size_t saltlen,
51 int id, uint64_t iter, const EVP_MD *md_type,
52 unsigned char *out, size_t n)
53{
54 unsigned char *B = NULL, *D = NULL, *I = NULL, *p = NULL, *Ai = NULL;
55 size_t Slen, Plen, Ilen;
56 size_t i, j, k, u, v;
57 uint64_t iter_cnt;
58 int ret = 0, ui, vi;
59 EVP_MD_CTX *ctx = NULL;
60
61 ctx = EVP_MD_CTX_new();
62 if (ctx == NULL) {
63 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
64 goto end;
65 }
66 vi = EVP_MD_get_block_size(md_type);
67 ui = EVP_MD_get_size(md_type);
68 if (ui <= 0 || vi <= 0) {
69 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_SIZE);
70 goto end;
71 }
72 u = (size_t)ui;
73 v = (size_t)vi;
74 D = OPENSSL_malloc(v);
75 Ai = OPENSSL_malloc(u);
76 B = OPENSSL_malloc(v + 1);
77 Slen = v * ((saltlen + v - 1) / v);
78 if (passlen != 0)
79 Plen = v * ((passlen + v - 1) / v);
80 else
81 Plen = 0;
82 Ilen = Slen + Plen;
83 I = OPENSSL_malloc(Ilen);
84 if (D == NULL || Ai == NULL || B == NULL || I == NULL) {
85 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
86 goto end;
87 }
88 for (i = 0; i < v; i++)
89 D[i] = id;
90 p = I;
91 for (i = 0; i < Slen; i++)
92 *p++ = salt[i % saltlen];
93 for (i = 0; i < Plen; i++)
94 *p++ = pass[i % passlen];
95 for (;;) {
96 if (!EVP_DigestInit_ex(ctx, md_type, NULL)
97 || !EVP_DigestUpdate(ctx, D, v)
98 || !EVP_DigestUpdate(ctx, I, Ilen)
99 || !EVP_DigestFinal_ex(ctx, Ai, NULL))
100 goto end;
101 for (iter_cnt = 1; iter_cnt < iter; iter_cnt++) {
102 if (!EVP_DigestInit_ex(ctx, md_type, NULL)
103 || !EVP_DigestUpdate(ctx, Ai, u)
104 || !EVP_DigestFinal_ex(ctx, Ai, NULL))
105 goto end;
106 }
107 memcpy(out, Ai, n < u ? n : u);
108 if (u >= n) {
109 ret = 1;
110 break;
111 }
112 n -= u;
113 out += u;
114 for (j = 0; j < v; j++)
115 B[j] = Ai[j % u];
116 for (j = 0; j < Ilen; j += v) {
117 unsigned char *Ij = I + j;
118 uint16_t c = 1;
119
120 /* Work out Ij = Ij + B + 1 */
121 for (k = v; k > 0;) {
122 k--;
123 c += Ij[k] + B[k];
124 Ij[k] = (unsigned char)c;
125 c >>= 8;
126 }
127 }
128 }
129
130 end:
131 OPENSSL_free(Ai);
132 OPENSSL_free(B);
133 OPENSSL_free(D);
134 OPENSSL_free(I);
135 EVP_MD_CTX_free(ctx);
136 return ret;
137}
138
139static void *kdf_pkcs12_new(void *provctx)
140{
141 KDF_PKCS12 *ctx;
142
143 if (!ossl_prov_is_running())
144 return NULL;
145
146 ctx = OPENSSL_zalloc(sizeof(*ctx));
147 if (ctx == NULL) {
148 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
149 return NULL;
150 }
151 ctx->provctx = provctx;
152 return ctx;
153}
154
155static void kdf_pkcs12_cleanup(KDF_PKCS12 *ctx)
156{
157 ossl_prov_digest_reset(&ctx->digest);
158 OPENSSL_free(ctx->salt);
159 OPENSSL_clear_free(ctx->pass, ctx->pass_len);
160 memset(ctx, 0, sizeof(*ctx));
161}
162
163static void kdf_pkcs12_free(void *vctx)
164{
165 KDF_PKCS12 *ctx = (KDF_PKCS12 *)vctx;
166
167 if (ctx != NULL) {
168 kdf_pkcs12_cleanup(ctx);
169 OPENSSL_free(ctx);
170 }
171}
172
173static void kdf_pkcs12_reset(void *vctx)
174{
175 KDF_PKCS12 *ctx = (KDF_PKCS12 *)vctx;
176 void *provctx = ctx->provctx;
177
178 kdf_pkcs12_cleanup(ctx);
179 ctx->provctx = provctx;
180}
181
182static void *kdf_pkcs12_dup(void *vctx)
183{
184 const KDF_PKCS12 *src = (const KDF_PKCS12 *)vctx;
185 KDF_PKCS12 *dest;
186
187 dest = kdf_pkcs12_new(src->provctx);
188 if (dest != NULL) {
189 if (!ossl_prov_memdup(src->salt, src->salt_len,
190 &dest->salt, &dest->salt_len)
191 || !ossl_prov_memdup(src->pass, src->pass_len,
192 &dest->pass , &dest->pass_len)
193 || !ossl_prov_digest_copy(&dest->digest, &src->digest))
194 goto err;
195 dest->iter = src->iter;
196 dest->id = src->id;
197 }
198 return dest;
199
200 err:
201 kdf_pkcs12_free(dest);
202 return NULL;
203}
204
205static int pkcs12kdf_set_membuf(unsigned char **buffer, size_t *buflen,
206 const OSSL_PARAM *p)
207{
208 OPENSSL_clear_free(*buffer, *buflen);
209 *buffer = NULL;
210 *buflen = 0;
211
212 if (p->data_size == 0) {
213 if ((*buffer = OPENSSL_malloc(1)) == NULL) {
214 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
215 return 0;
216 }
217 } else if (p->data != NULL) {
218 if (!OSSL_PARAM_get_octet_string(p, (void **)buffer, 0, buflen))
219 return 0;
220 }
221 return 1;
222}
223
224static int kdf_pkcs12_derive(void *vctx, unsigned char *key, size_t keylen,
225 const OSSL_PARAM params[])
226{
227 KDF_PKCS12 *ctx = (KDF_PKCS12 *)vctx;
228 const EVP_MD *md;
229
230 if (!ossl_prov_is_running() || !kdf_pkcs12_set_ctx_params(ctx, params))
231 return 0;
232
233 if (ctx->pass == NULL) {
234 ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_PASS);
235 return 0;
236 }
237
238 if (ctx->salt == NULL) {
239 ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_SALT);
240 return 0;
241 }
242
243 md = ossl_prov_digest_md(&ctx->digest);
244 return pkcs12kdf_derive(ctx->pass, ctx->pass_len, ctx->salt, ctx->salt_len,
245 ctx->id, ctx->iter, md, key, keylen);
246}
247
248static int kdf_pkcs12_set_ctx_params(void *vctx, const OSSL_PARAM params[])
249{
250 const OSSL_PARAM *p;
251 KDF_PKCS12 *ctx = vctx;
252 OSSL_LIB_CTX *provctx = PROV_LIBCTX_OF(ctx->provctx);
253
254 if (params == NULL)
255 return 1;
256
257 if (!ossl_prov_digest_load_from_params(&ctx->digest, params, provctx))
258 return 0;
259
260 if ((p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_PASSWORD)) != NULL)
261 if (!pkcs12kdf_set_membuf(&ctx->pass, &ctx->pass_len, p))
262 return 0;
263
264 if ((p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_SALT)) != NULL)
265 if (!pkcs12kdf_set_membuf(&ctx->salt, &ctx->salt_len,p))
266 return 0;
267
268 if ((p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_PKCS12_ID)) != NULL)
269 if (!OSSL_PARAM_get_int(p, &ctx->id))
270 return 0;
271
272 if ((p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_ITER)) != NULL)
273 if (!OSSL_PARAM_get_uint64(p, &ctx->iter))
274 return 0;
275 return 1;
276}
277
278static const OSSL_PARAM *kdf_pkcs12_settable_ctx_params(
279 ossl_unused void *ctx, ossl_unused void *provctx)
280{
281 static const OSSL_PARAM known_settable_ctx_params[] = {
282 OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_PROPERTIES, NULL, 0),
283 OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_DIGEST, NULL, 0),
284 OSSL_PARAM_octet_string(OSSL_KDF_PARAM_PASSWORD, NULL, 0),
285 OSSL_PARAM_octet_string(OSSL_KDF_PARAM_SALT, NULL, 0),
286 OSSL_PARAM_uint64(OSSL_KDF_PARAM_ITER, NULL),
287 OSSL_PARAM_int(OSSL_KDF_PARAM_PKCS12_ID, NULL),
288 OSSL_PARAM_END
289 };
290 return known_settable_ctx_params;
291}
292
293static int kdf_pkcs12_get_ctx_params(void *vctx, OSSL_PARAM params[])
294{
295 OSSL_PARAM *p;
296
297 if ((p = OSSL_PARAM_locate(params, OSSL_KDF_PARAM_SIZE)) != NULL)
298 return OSSL_PARAM_set_size_t(p, SIZE_MAX);
299 return -2;
300}
301
302static const OSSL_PARAM *kdf_pkcs12_gettable_ctx_params(
303 ossl_unused void *ctx, ossl_unused void *provctx)
304{
305 static const OSSL_PARAM known_gettable_ctx_params[] = {
306 OSSL_PARAM_size_t(OSSL_KDF_PARAM_SIZE, NULL),
307 OSSL_PARAM_END
308 };
309 return known_gettable_ctx_params;
310}
311
312const OSSL_DISPATCH ossl_kdf_pkcs12_functions[] = {
313 { OSSL_FUNC_KDF_NEWCTX, (void(*)(void))kdf_pkcs12_new },
314 { OSSL_FUNC_KDF_DUPCTX, (void(*)(void))kdf_pkcs12_dup },
315 { OSSL_FUNC_KDF_FREECTX, (void(*)(void))kdf_pkcs12_free },
316 { OSSL_FUNC_KDF_RESET, (void(*)(void))kdf_pkcs12_reset },
317 { OSSL_FUNC_KDF_DERIVE, (void(*)(void))kdf_pkcs12_derive },
318 { OSSL_FUNC_KDF_SETTABLE_CTX_PARAMS,
319 (void(*)(void))kdf_pkcs12_settable_ctx_params },
320 { OSSL_FUNC_KDF_SET_CTX_PARAMS, (void(*)(void))kdf_pkcs12_set_ctx_params },
321 { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
322 (void(*)(void))kdf_pkcs12_gettable_ctx_params },
323 { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_pkcs12_get_ctx_params },
324 { 0, NULL }
325};
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