1 /**********************************************************************
3 * Copyright (c) 2005-2006 Cryptocom LTD *
4 * This file is distributed under the same license as OpenSSL *
6 * OpenSSL interface to GOST 28147-89 cipher functions *
7 * Requires OpenSSL 0.9.9 for compilation *
8 **********************************************************************/
11 #include <openssl/err.h>
12 #include <openssl/rand.h>
13 #include "e_gost_err.h"
15 #include "gost_gost2015.h"
17 #if !defined(CCGOST_DEBUG) && !defined(DEBUG)
24 static int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
25 const unsigned char *iv, int enc);
26 static int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
27 const unsigned char *iv, int enc);
28 static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
29 const unsigned char *iv, int enc);
30 static int gost_cipher_init_cp_12(EVP_CIPHER_CTX *ctx,
31 const unsigned char *key,
32 const unsigned char *iv, int enc);
33 /* Handles block of data in CFB mode */
34 static int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
35 const unsigned char *in, size_t inl);
36 /* Handles block of data in CBC mode */
37 static int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
38 const unsigned char *in, size_t inl);
39 /* Handles block of data in CNT mode */
40 static int gost_cipher_do_cnt(EVP_CIPHER_CTX *ctx, unsigned char *out,
41 const unsigned char *in, size_t inl);
42 /* Cleanup function */
43 static int gost_cipher_cleanup(EVP_CIPHER_CTX *);
44 /* set/get cipher parameters */
45 static int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
46 static int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
47 /* Control function */
48 static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
50 static int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
51 const unsigned char *iv, int enc);
52 static int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key,
53 const unsigned char *iv, int enc);
54 /* Handles block of data in CBC mode */
55 static int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
56 const unsigned char *in, size_t inl);
57 static int magma_cipher_do_ctr(EVP_CIPHER_CTX *ctx, unsigned char *out,
58 const unsigned char *in, size_t inl);
60 static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *out,
61 const unsigned char *in, size_t inl);
63 /* set/get cipher parameters */
64 static int magma_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
65 static int magma_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
66 /* Control function */
67 static int magma_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
68 static int magma_cipher_ctl_acpkm_omac(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
70 static EVP_CIPHER *_hidden_Gost28147_89_cipher = NULL;
71 const EVP_CIPHER *cipher_gost(void)
73 if (_hidden_Gost28147_89_cipher == NULL
74 && ((_hidden_Gost28147_89_cipher =
75 EVP_CIPHER_meth_new(NID_id_Gost28147_89, 1 /* block_size */ ,
76 32 /* key_size */ )) == NULL
77 || !EVP_CIPHER_meth_set_iv_length(_hidden_Gost28147_89_cipher, 8)
78 || !EVP_CIPHER_meth_set_flags(_hidden_Gost28147_89_cipher,
83 EVP_CIPH_ALWAYS_CALL_INIT)
84 || !EVP_CIPHER_meth_set_init(_hidden_Gost28147_89_cipher,
86 || !EVP_CIPHER_meth_set_do_cipher(_hidden_Gost28147_89_cipher,
88 || !EVP_CIPHER_meth_set_cleanup(_hidden_Gost28147_89_cipher,
90 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_Gost28147_89_cipher,
92 ossl_gost_cipher_ctx))
94 !EVP_CIPHER_meth_set_set_asn1_params(_hidden_Gost28147_89_cipher,
95 gost89_set_asn1_parameters)
97 !EVP_CIPHER_meth_set_get_asn1_params(_hidden_Gost28147_89_cipher,
98 gost89_get_asn1_parameters)
99 || !EVP_CIPHER_meth_set_ctrl(_hidden_Gost28147_89_cipher,
101 EVP_CIPHER_meth_free(_hidden_Gost28147_89_cipher);
102 _hidden_Gost28147_89_cipher = NULL;
104 return _hidden_Gost28147_89_cipher;
107 static EVP_CIPHER *_hidden_Gost28147_89_cbc = NULL;
108 const EVP_CIPHER *cipher_gost_cbc(void)
110 if (_hidden_Gost28147_89_cbc == NULL
111 && ((_hidden_Gost28147_89_cbc =
112 EVP_CIPHER_meth_new(NID_gost89_cbc, 8 /* block_size */ ,
113 32 /* key_size */ )) == NULL
114 || !EVP_CIPHER_meth_set_iv_length(_hidden_Gost28147_89_cbc, 8)
115 || !EVP_CIPHER_meth_set_flags(_hidden_Gost28147_89_cbc,
119 EVP_CIPH_ALWAYS_CALL_INIT)
120 || !EVP_CIPHER_meth_set_init(_hidden_Gost28147_89_cbc,
121 gost_cipher_init_cbc)
122 || !EVP_CIPHER_meth_set_do_cipher(_hidden_Gost28147_89_cbc,
124 || !EVP_CIPHER_meth_set_cleanup(_hidden_Gost28147_89_cbc,
126 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_Gost28147_89_cbc,
128 ossl_gost_cipher_ctx))
129 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_Gost28147_89_cbc,
130 gost89_set_asn1_parameters)
131 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_Gost28147_89_cbc,
132 gost89_get_asn1_parameters)
133 || !EVP_CIPHER_meth_set_ctrl(_hidden_Gost28147_89_cbc,
135 EVP_CIPHER_meth_free(_hidden_Gost28147_89_cbc);
136 _hidden_Gost28147_89_cbc = NULL;
138 return _hidden_Gost28147_89_cbc;
141 static EVP_CIPHER *_hidden_gost89_cnt = NULL;
142 const EVP_CIPHER *cipher_gost_cpacnt(void)
144 if (_hidden_gost89_cnt == NULL
145 && ((_hidden_gost89_cnt =
146 EVP_CIPHER_meth_new(NID_gost89_cnt, 1 /* block_size */ ,
147 32 /* key_size */ )) == NULL
148 || !EVP_CIPHER_meth_set_iv_length(_hidden_gost89_cnt, 8)
149 || !EVP_CIPHER_meth_set_flags(_hidden_gost89_cnt,
151 EVP_CIPH_NO_PADDING |
154 EVP_CIPH_ALWAYS_CALL_INIT)
155 || !EVP_CIPHER_meth_set_init(_hidden_gost89_cnt,
156 gost_cipher_init_cpa)
157 || !EVP_CIPHER_meth_set_do_cipher(_hidden_gost89_cnt,
159 || !EVP_CIPHER_meth_set_cleanup(_hidden_gost89_cnt,
161 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt,
163 ossl_gost_cipher_ctx))
164 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_gost89_cnt,
165 gost89_set_asn1_parameters)
166 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_gost89_cnt,
167 gost89_get_asn1_parameters)
168 || !EVP_CIPHER_meth_set_ctrl(_hidden_gost89_cnt, gost_cipher_ctl))) {
169 EVP_CIPHER_meth_free(_hidden_gost89_cnt);
170 _hidden_gost89_cnt = NULL;
172 return _hidden_gost89_cnt;
175 static EVP_CIPHER *_hidden_gost89_cnt_12 = NULL;
176 const EVP_CIPHER *cipher_gost_cpcnt_12(void)
178 if (_hidden_gost89_cnt_12 == NULL
179 && ((_hidden_gost89_cnt_12 =
180 EVP_CIPHER_meth_new(NID_gost89_cnt_12, 1 /* block_size */ ,
181 32 /* key_size */ )) == NULL
182 || !EVP_CIPHER_meth_set_iv_length(_hidden_gost89_cnt_12, 8)
183 || !EVP_CIPHER_meth_set_flags(_hidden_gost89_cnt_12,
185 EVP_CIPH_NO_PADDING |
188 EVP_CIPH_ALWAYS_CALL_INIT)
189 || !EVP_CIPHER_meth_set_init(_hidden_gost89_cnt_12,
190 gost_cipher_init_cp_12)
191 || !EVP_CIPHER_meth_set_do_cipher(_hidden_gost89_cnt_12,
193 || !EVP_CIPHER_meth_set_cleanup(_hidden_gost89_cnt_12,
195 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt_12,
197 ossl_gost_cipher_ctx))
198 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_gost89_cnt_12,
199 gost89_set_asn1_parameters)
200 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_gost89_cnt_12,
201 gost89_get_asn1_parameters)
202 || !EVP_CIPHER_meth_set_ctrl(_hidden_gost89_cnt_12,
204 EVP_CIPHER_meth_free(_hidden_gost89_cnt_12);
205 _hidden_gost89_cnt_12 = NULL;
207 return _hidden_gost89_cnt_12;
210 static EVP_CIPHER *_hidden_magma_ctr = NULL;
211 const EVP_CIPHER *cipher_magma_ctr(void)
213 if (_hidden_magma_ctr == NULL
214 && ((_hidden_magma_ctr =
215 EVP_CIPHER_meth_new(NID_magma_ctr, 1 /* block_size */ ,
216 32 /* key_size */ )) == NULL
217 || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr, 4)
218 || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr,
220 EVP_CIPH_NO_PADDING |
223 EVP_CIPH_ALWAYS_CALL_INIT)
224 || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr, magma_cipher_init)
225 || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr,
227 || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr,
229 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr,
231 ossl_gost_cipher_ctx))
232 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr,
233 magma_set_asn1_parameters)
234 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr,
235 magma_get_asn1_parameters)
236 || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr, magma_cipher_ctl))) {
237 EVP_CIPHER_meth_free(_hidden_magma_ctr);
238 _hidden_magma_ctr = NULL;
240 return _hidden_magma_ctr;
243 static EVP_CIPHER *_hidden_magma_ctr_acpkm = NULL;
244 const EVP_CIPHER *cipher_magma_ctr_acpkm(void)
246 if (_hidden_magma_ctr_acpkm == NULL
247 && ((_hidden_magma_ctr_acpkm =
248 EVP_CIPHER_meth_new(NID_magma_ctr_acpkm, 1 /* block_size */ ,
249 32 /* key_size */ )) == NULL
250 || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr_acpkm, 4)
251 || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr_acpkm,
253 EVP_CIPH_NO_PADDING |
256 EVP_CIPH_ALWAYS_CALL_INIT)
257 || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr_acpkm, magma_cipher_init)
258 || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr_acpkm,
260 || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr_acpkm,
262 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr_acpkm,
264 ossl_gost_cipher_ctx))
265 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr_acpkm,
266 magma_set_asn1_parameters)
267 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr_acpkm,
268 magma_get_asn1_parameters)
270 || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr_acpkm, magma_cipher_ctl))) {
271 EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm);
272 _hidden_magma_ctr_acpkm = NULL;
274 return _hidden_magma_ctr_acpkm;
277 static EVP_CIPHER *_hidden_magma_ctr_acpkm_omac = NULL;
278 const EVP_CIPHER *cipher_magma_ctr_acpkm_omac(void)
280 if (_hidden_magma_ctr_acpkm_omac == NULL
281 && ((_hidden_magma_ctr_acpkm_omac =
282 EVP_CIPHER_meth_new(NID_magma_ctr_acpkm_omac, 1 /* block_size */ ,
283 32 /* key_size */ )) == NULL
284 || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr_acpkm_omac, 4)
285 || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr_acpkm_omac,
287 EVP_CIPH_NO_PADDING |
290 EVP_CIPH_ALWAYS_CALL_INIT |
291 EVP_CIPH_CUSTOM_COPY |
292 EVP_CIPH_FLAG_CUSTOM_CIPHER |
293 EVP_CIPH_FLAG_CIPHER_WITH_MAC)
294 || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr_acpkm_omac, magma_cipher_init_ctr_acpkm_omac)
295 || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr_acpkm_omac,
296 magma_cipher_do_ctr_acpkm_omac)
297 || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr_acpkm_omac,
299 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr_acpkm_omac,
301 ossl_gost_cipher_ctx))
302 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr_acpkm_omac,
303 magma_set_asn1_parameters)
304 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr_acpkm_omac,
305 magma_get_asn1_parameters)
306 || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr_acpkm_omac, magma_cipher_ctl_acpkm_omac))) {
307 EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm_omac);
308 _hidden_magma_ctr_acpkm_omac = NULL;
310 return _hidden_magma_ctr_acpkm_omac;
313 static EVP_CIPHER *_hidden_magma_cbc = NULL;
314 const EVP_CIPHER *cipher_magma_cbc(void)
316 if (_hidden_magma_cbc == NULL
317 && ((_hidden_magma_cbc =
318 EVP_CIPHER_meth_new(NID_magma_cbc, 8 /* block_size */ ,
319 32 /* key_size */ )) == NULL
320 || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_cbc, 8)
321 || !EVP_CIPHER_meth_set_flags(_hidden_magma_cbc,
325 EVP_CIPH_ALWAYS_CALL_INIT)
326 || !EVP_CIPHER_meth_set_init(_hidden_magma_cbc, magma_cipher_init)
327 || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_cbc,
329 || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_cbc,
331 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_cbc,
333 ossl_gost_cipher_ctx))
334 || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_cbc, magma_cipher_ctl))) {
335 EVP_CIPHER_meth_free(_hidden_magma_cbc);
336 _hidden_magma_cbc = NULL;
338 return _hidden_magma_cbc;
341 void cipher_gost_destroy(void)
343 EVP_CIPHER_meth_free(_hidden_Gost28147_89_cipher);
344 _hidden_Gost28147_89_cipher = NULL;
345 EVP_CIPHER_meth_free(_hidden_gost89_cnt);
346 _hidden_gost89_cnt = NULL;
347 EVP_CIPHER_meth_free(_hidden_Gost28147_89_cbc);
348 _hidden_Gost28147_89_cbc = NULL;
349 EVP_CIPHER_meth_free(_hidden_gost89_cnt_12);
350 _hidden_gost89_cnt_12 = NULL;
351 EVP_CIPHER_meth_free(_hidden_magma_cbc);
352 _hidden_magma_cbc = NULL;
353 EVP_CIPHER_meth_free(_hidden_magma_ctr);
354 _hidden_magma_ctr = NULL;
355 EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm);
356 _hidden_magma_ctr_acpkm = NULL;
357 EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm_omac);
358 _hidden_magma_ctr_acpkm_omac = NULL;
361 /* Implementation of GOST 28147-89 in MAC (imitovstavka) mode */
362 /* Init functions which set specific parameters */
363 static int gost_imit_init_cpa(EVP_MD_CTX *ctx);
364 static int gost_imit_init_cp_12(EVP_MD_CTX *ctx);
365 /* process block of data */
366 static int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count);
367 /* Return computed value */
368 static int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md);
370 static int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from);
371 static int gost_imit_cleanup(EVP_MD_CTX *ctx);
372 /* Control function, knows how to set MAC key.*/
373 static int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
375 static EVP_MD *_hidden_Gost28147_89_MAC_md = NULL;
376 static EVP_MD *_hidden_Gost28147_89_12_MAC_md = NULL;
378 EVP_MD *imit_gost_cpa(void)
380 if (_hidden_Gost28147_89_MAC_md == NULL) {
383 if ((md = EVP_MD_meth_new(NID_id_Gost28147_89_MAC, NID_undef)) == NULL
384 || !EVP_MD_meth_set_result_size(md, 4)
385 || !EVP_MD_meth_set_input_blocksize(md, 8)
386 || !EVP_MD_meth_set_app_datasize(md,
387 sizeof(struct ossl_gost_imit_ctx))
388 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_XOF)
389 || !EVP_MD_meth_set_init(md, gost_imit_init_cpa)
390 || !EVP_MD_meth_set_update(md, gost_imit_update)
391 || !EVP_MD_meth_set_final(md, gost_imit_final)
392 || !EVP_MD_meth_set_copy(md, gost_imit_copy)
393 || !EVP_MD_meth_set_cleanup(md, gost_imit_cleanup)
394 || !EVP_MD_meth_set_ctrl(md, gost_imit_ctrl)) {
395 EVP_MD_meth_free(md);
398 _hidden_Gost28147_89_MAC_md = md;
400 return _hidden_Gost28147_89_MAC_md;
403 void imit_gost_cpa_destroy(void)
405 EVP_MD_meth_free(_hidden_Gost28147_89_MAC_md);
406 _hidden_Gost28147_89_MAC_md = NULL;
409 EVP_MD *imit_gost_cp_12(void)
411 if (_hidden_Gost28147_89_12_MAC_md == NULL) {
414 if ((md = EVP_MD_meth_new(NID_gost_mac_12, NID_undef)) == NULL
415 || !EVP_MD_meth_set_result_size(md, 4)
416 || !EVP_MD_meth_set_input_blocksize(md, 8)
417 || !EVP_MD_meth_set_app_datasize(md,
418 sizeof(struct ossl_gost_imit_ctx))
419 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_XOF)
420 || !EVP_MD_meth_set_init(md, gost_imit_init_cp_12)
421 || !EVP_MD_meth_set_update(md, gost_imit_update)
422 || !EVP_MD_meth_set_final(md, gost_imit_final)
423 || !EVP_MD_meth_set_copy(md, gost_imit_copy)
424 || !EVP_MD_meth_set_cleanup(md, gost_imit_cleanup)
425 || !EVP_MD_meth_set_ctrl(md, gost_imit_ctrl)) {
426 EVP_MD_meth_free(md);
429 _hidden_Gost28147_89_12_MAC_md = md;
431 return _hidden_Gost28147_89_12_MAC_md;
434 void imit_gost_cp_12_destroy(void)
436 EVP_MD_meth_free(_hidden_Gost28147_89_12_MAC_md);
437 _hidden_Gost28147_89_12_MAC_md = NULL;
441 * Correspondence between gost parameter OIDs and substitution blocks
442 * NID field is filed by register_gost_NID function in engine.c
443 * upon engine initialization
446 struct gost_cipher_info gost_cipher_list[] = {
453 * {NID_id_GostR3411_94_CryptoProParamSet,&GostR3411_94_CryptoProParamSet,0},
455 {NID_id_Gost28147_89_CryptoPro_A_ParamSet, &Gost28147_CryptoProParamSetA,
457 {NID_id_Gost28147_89_CryptoPro_B_ParamSet, &Gost28147_CryptoProParamSetB,
459 {NID_id_Gost28147_89_CryptoPro_C_ParamSet, &Gost28147_CryptoProParamSetC,
461 {NID_id_Gost28147_89_CryptoPro_D_ParamSet, &Gost28147_CryptoProParamSetD,
463 {NID_id_tc26_gost_28147_param_Z, &Gost28147_TC26ParamSetZ, 1},
464 {NID_id_Gost28147_89_TestParamSet, &Gost28147_TestParamSet, 1},
469 * get encryption parameters from crypto network settings FIXME For now we
470 * use environment var CRYPT_PARAMS as place to store these settings.
471 * Actually, it is better to use engine control command, read from
472 * configuration file to set them
474 const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj)
477 struct gost_cipher_info *param;
479 const char *params = get_gost_engine_param(GOST_PARAM_CRYPT_PARAMS);
480 if (!params || !strlen(params)) {
482 for (i = 0; gost_cipher_list[i].nid != NID_undef; i++)
483 if (gost_cipher_list[i].nid == NID_id_tc26_gost_28147_param_Z)
484 return &gost_cipher_list[i];
485 return &gost_cipher_list[0];
488 nid = OBJ_txt2nid(params);
489 if (nid == NID_undef) {
490 GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS,
491 GOST_R_INVALID_CIPHER_PARAM_OID);
495 nid = OBJ_obj2nid(obj);
497 for (param = gost_cipher_list; param->sblock != NULL && param->nid != nid;
499 if (!param->sblock) {
500 GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS, GOST_R_INVALID_CIPHER_PARAMS);
506 /* Sets cipher param from paramset NID. */
507 static int gost_cipher_set_param(struct ossl_gost_cipher_ctx *c, int nid)
509 const struct gost_cipher_info *param;
510 param = get_encryption_params((nid == NID_undef ? NULL : OBJ_nid2obj(nid)));
514 c->paramNID = param->nid;
515 c->key_meshing = param->key_meshing;
517 gost_init(&(c->cctx), param->sblock);
521 /* Initializes EVP_CIPHER_CTX by paramset NID */
522 static int gost_cipher_init_param(EVP_CIPHER_CTX *ctx,
523 const unsigned char *key,
524 const unsigned char *iv, int enc,
525 int paramNID, int mode)
527 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
528 if (EVP_CIPHER_CTX_get_app_data(ctx) == NULL) {
529 if (!gost_cipher_set_param(c, paramNID))
531 EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_get_cipher_data(ctx));
534 gost_key(&(c->cctx), key);
536 memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv,
537 EVP_CIPHER_CTX_iv_length(ctx));
539 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx),
540 EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
544 static int gost_cipher_init_cnt(EVP_CIPHER_CTX *ctx,
545 const unsigned char *key,
546 const unsigned char *iv,
547 gost_subst_block * block)
549 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
550 gost_init(&(c->cctx), block);
554 gost_key(&(c->cctx), key);
556 memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv,
557 EVP_CIPHER_CTX_iv_length(ctx));
559 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx),
560 EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
564 static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
565 const unsigned char *iv, int enc)
567 return gost_cipher_init_cnt(ctx, key, iv, &Gost28147_CryptoProParamSetA);
570 static int gost_cipher_init_cp_12(EVP_CIPHER_CTX *ctx,
571 const unsigned char *key,
572 const unsigned char *iv, int enc)
574 return gost_cipher_init_cnt(ctx, key, iv, &Gost28147_TC26ParamSetZ);
577 /* Initializes EVP_CIPHER_CTX with default values */
578 int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
579 const unsigned char *iv, int enc)
581 return gost_cipher_init_param(ctx, key, iv, enc, NID_undef,
585 /* Initializes EVP_CIPHER_CTX with default values */
586 int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
587 const unsigned char *iv, int enc)
589 return gost_cipher_init_param(ctx, key, iv, enc, NID_undef,
593 /* Initializes EVP_CIPHER_CTX with default values */
594 int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
595 const unsigned char *iv, int enc)
597 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
598 /* FIXME this is just initializtion check */
599 if (EVP_CIPHER_CTX_get_app_data(ctx) == NULL) {
600 if (!gost_cipher_set_param(c, NID_id_tc26_gost_28147_param_Z))
602 EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_get_cipher_data(ctx));
605 magma_key(&(c->cctx), key);
607 memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv,
608 EVP_CIPHER_CTX_iv_length(ctx));
610 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx),
611 EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
613 if (EVP_CIPHER_CTX_nid(ctx) == NID_magma_ctr_acpkm
614 || EVP_CIPHER_CTX_nid(ctx) == NID_magma_ctr_acpkm_omac) {
615 c->key_meshing = 1024;
623 /* Initializes EVP_CIPHER_CTX with default values */
624 int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key,
625 const unsigned char *iv, int enc)
628 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
629 unsigned char keys[64];
630 const EVP_MD *md = EVP_get_digestbynid(NID_magma_mac);
637 if (RAND_bytes(c->kdf_seed, 8) != 1)
641 if (gost_kdftree2012_256(keys, 64, key, 32, (const unsigned char *)"kdf tree", 8, c->kdf_seed, 8, 1) <= 0)
644 c->omac_ctx = EVP_MD_CTX_new();
645 mac_key = EVP_PKEY_new_mac_key(NID_magma_mac, NULL, keys+32, 32);
647 if (mac_key == NULL || c->omac_ctx == NULL) {
648 EVP_PKEY_free(mac_key);
649 OPENSSL_cleanse(keys, sizeof(keys));
653 if (EVP_DigestInit_ex(c->omac_ctx, md, NULL) <= 0 ||
654 EVP_DigestSignInit(c->omac_ctx, NULL, md, NULL, mac_key) <= 0) {
655 EVP_PKEY_free(mac_key);
656 OPENSSL_cleanse(keys, sizeof(keys));
659 EVP_PKEY_free(mac_key);
660 OPENSSL_cleanse(keys + 32, sizeof(keys) - 32);
662 return magma_cipher_init(ctx, keys, iv, enc);
664 return magma_cipher_init(ctx, key, iv, enc);
668 * Wrapper around gostcrypt function from gost89.c which perform key meshing
671 static void gost_crypt_mesh(void *ctx, unsigned char *iv, unsigned char *buf)
673 struct ossl_gost_cipher_ctx *c = ctx;
674 assert(c->count % 8 == 0 && c->count <= 1024);
675 if (c->key_meshing && c->count == 1024) {
676 cryptopro_key_meshing(&(c->cctx), iv);
678 gostcrypt(&(c->cctx), iv, buf);
679 c->count = c->count % 1024 + 8;
682 static void gost_cnt_next(void *ctx, unsigned char *iv, unsigned char *buf)
684 struct ossl_gost_cipher_ctx *c = ctx;
686 unsigned char buf1[8];
687 assert(c->count % 8 == 0 && c->count <= 1024);
688 if (c->key_meshing && c->count == 1024) {
689 cryptopro_key_meshing(&(c->cctx), iv);
692 gostcrypt(&(c->cctx), iv, buf1);
696 g = buf1[0] | (buf1[1] << 8) | (buf1[2] << 16) | ((word32) buf1[3] << 24);
698 buf1[0] = (unsigned char)(g & 0xff);
699 buf1[1] = (unsigned char)((g >> 8) & 0xff);
700 buf1[2] = (unsigned char)((g >> 16) & 0xff);
701 buf1[3] = (unsigned char)((g >> 24) & 0xff);
702 g = buf1[4] | (buf1[5] << 8) | (buf1[6] << 16) | ((word32) buf1[7] << 24);
705 if (go > g) /* overflow */
707 buf1[4] = (unsigned char)(g & 0xff);
708 buf1[5] = (unsigned char)((g >> 8) & 0xff);
709 buf1[6] = (unsigned char)((g >> 16) & 0xff);
710 buf1[7] = (unsigned char)((g >> 24) & 0xff);
712 gostcrypt(&(c->cctx), buf1, buf);
713 c->count = c->count % 1024 + 8;
716 /* GOST encryption in CBC mode */
717 int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
718 const unsigned char *in, size_t inl)
721 const unsigned char *in_ptr = in;
722 unsigned char *out_ptr = out;
724 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
725 unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
726 if (EVP_CIPHER_CTX_encrypting(ctx)) {
729 for (i = 0; i < 8; i++) {
730 b[i] = iv[i] ^ in_ptr[i];
732 gostcrypt(&(c->cctx), b, out_ptr);
733 memcpy(iv, out_ptr, 8);
740 gostdecrypt(&(c->cctx), in_ptr, b);
741 for (i = 0; i < 8; i++) {
742 out_ptr[i] = iv[i] ^ b[i];
744 memcpy(iv, in_ptr, 8);
753 /* MAGMA encryption in CBC mode */
754 int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
755 const unsigned char *in, size_t inl)
759 const unsigned char *in_ptr = in;
760 unsigned char *out_ptr = out;
762 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
763 unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
764 if (EVP_CIPHER_CTX_encrypting(ctx)) {
767 for (i = 0; i < 8; i++) {
768 b[7 - i] = iv[i] ^ in_ptr[i];
770 gostcrypt(&(c->cctx), b, d);
772 for (i = 0; i < 8; i++) {
773 out_ptr[7 - i] = d[i];
775 memcpy(iv, out_ptr, 8);
782 for (i = 0; i < 8; i++) {
783 d[7 - i] = in_ptr[i];
785 gostdecrypt(&(c->cctx), d, b);
786 for (i = 0; i < 8; i++) {
787 out_ptr[i] = iv[i] ^ b[7 - i];
789 memcpy(iv, in_ptr, 8);
798 /* increment counter (64-bit int) by 1 */
799 static void ctr64_inc(unsigned char *counter)
801 inc_counter(counter, 8);
804 /* MAGMA encryption in CTR mode */
805 static int magma_cipher_do_ctr(EVP_CIPHER_CTX *ctx, unsigned char *out,
806 const unsigned char *in, size_t inl)
808 const unsigned char *in_ptr = in;
809 unsigned char *out_ptr = out;
812 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
813 unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
814 unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
816 /* Process partial blocks */
817 if (EVP_CIPHER_CTX_num(ctx)) {
818 for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
819 j++, i++, in_ptr++, out_ptr++) {
820 *out_ptr = buf[7 - j] ^ (*in_ptr);
823 EVP_CIPHER_CTX_set_num(ctx, 0);
825 EVP_CIPHER_CTX_set_num(ctx, j);
830 /* Process full blocks */
831 for (; i + 8 <= inl; i += 8, in_ptr += 8, out_ptr += 8) {
832 for (j = 0; j < 8; j++) {
835 gostcrypt(&(c->cctx), b, buf);
836 for (j = 0; j < 8; j++) {
837 out_ptr[j] = buf[7 - j] ^ in_ptr[j];
841 if (c->key_meshing && (c->count % c->key_meshing == 0))
842 acpkm_magma_key_meshing(&(c->cctx));
845 /* Process the rest of plaintext */
847 for (j = 0; j < 8; j++) {
850 gostcrypt(&(c->cctx), b, buf);
852 for (j = 0; i < inl; j++, i++) {
853 out_ptr[j] = buf[7 - j] ^ in_ptr[j];
858 if (c->key_meshing && (c->count % c->key_meshing == 0))
859 acpkm_magma_key_meshing(&(c->cctx));
861 EVP_CIPHER_CTX_set_num(ctx, j);
863 EVP_CIPHER_CTX_set_num(ctx, 0);
869 /* MAGMA encryption in CTR mode */
870 static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *out,
871 const unsigned char *in, size_t inl)
873 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
875 if (in == NULL && inl == 0) /* Final call */
876 return gost2015_final_call(ctx, c->omac_ctx, MAGMA_MAC_MAX_SIZE, c->tag, magma_cipher_do_ctr);
878 /* As in and out can be the same pointer, process unencrypted here */
879 if (EVP_CIPHER_CTX_encrypting(ctx))
880 EVP_DigestSignUpdate(c->omac_ctx, in, inl);
882 if (magma_cipher_do_ctr(ctx, out, in, inl) != inl)
885 /* As in and out can be the same pointer, process decrypted here */
886 if (!EVP_CIPHER_CTX_encrypting(ctx))
887 EVP_DigestSignUpdate(c->omac_ctx, out, inl);
891 /* GOST encryption in CFB mode */
892 int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
893 const unsigned char *in, size_t inl)
895 const unsigned char *in_ptr = in;
896 unsigned char *out_ptr = out;
899 unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
900 unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
901 /* process partial block if any */
902 if (EVP_CIPHER_CTX_num(ctx)) {
903 for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
904 j++, i++, in_ptr++, out_ptr++) {
905 if (!EVP_CIPHER_CTX_encrypting(ctx))
906 buf[j + 8] = *in_ptr;
907 *out_ptr = buf[j] ^ (*in_ptr);
908 if (EVP_CIPHER_CTX_encrypting(ctx))
909 buf[j + 8] = *out_ptr;
912 memcpy(iv, buf + 8, 8);
913 EVP_CIPHER_CTX_set_num(ctx, 0);
915 EVP_CIPHER_CTX_set_num(ctx, j);
920 for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
922 * block cipher current iv
924 gost_crypt_mesh(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
926 * xor next block of input text with it and output it
931 if (!EVP_CIPHER_CTX_encrypting(ctx))
932 memcpy(iv, in_ptr, 8);
933 for (j = 0; j < 8; j++) {
934 out_ptr[j] = buf[j] ^ in_ptr[j];
937 /* Next iv is next block of cipher text */
938 if (EVP_CIPHER_CTX_encrypting(ctx))
939 memcpy(iv, out_ptr, 8);
941 /* Process rest of buffer */
943 gost_crypt_mesh(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
944 if (!EVP_CIPHER_CTX_encrypting(ctx))
945 memcpy(buf + 8, in_ptr, inl - i);
946 for (j = 0; i < inl; j++, i++) {
947 out_ptr[j] = buf[j] ^ in_ptr[j];
949 EVP_CIPHER_CTX_set_num(ctx, j);
950 if (EVP_CIPHER_CTX_encrypting(ctx))
951 memcpy(buf + 8, out_ptr, j);
953 EVP_CIPHER_CTX_set_num(ctx, 0);
958 static int gost_cipher_do_cnt(EVP_CIPHER_CTX *ctx, unsigned char *out,
959 const unsigned char *in, size_t inl)
961 const unsigned char *in_ptr = in;
962 unsigned char *out_ptr = out;
965 unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
966 unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
967 /* process partial block if any */
968 if (EVP_CIPHER_CTX_num(ctx)) {
969 for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
970 j++, i++, in_ptr++, out_ptr++) {
971 *out_ptr = buf[j] ^ (*in_ptr);
974 EVP_CIPHER_CTX_set_num(ctx, 0);
976 EVP_CIPHER_CTX_set_num(ctx, j);
981 for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
983 * block cipher current iv
986 gost_cnt_next(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
988 * xor next block of input text with it and output it
993 for (j = 0; j < 8; j++) {
994 out_ptr[j] = buf[j] ^ in_ptr[j];
997 /* Process rest of buffer */
999 gost_cnt_next(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
1000 for (j = 0; i < inl; j++, i++) {
1001 out_ptr[j] = buf[j] ^ in_ptr[j];
1003 EVP_CIPHER_CTX_set_num(ctx, j);
1005 EVP_CIPHER_CTX_set_num(ctx, 0);
1010 /* Cleaning up of EVP_CIPHER_CTX */
1011 int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
1013 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
1014 EVP_MD_CTX_free(c->omac_ctx);
1015 gost_destroy(&(c->cctx));
1016 EVP_CIPHER_CTX_set_app_data(ctx, NULL);
1020 /* Control function for gost cipher */
1021 int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
1024 case EVP_CTRL_RAND_KEY:
1027 ((unsigned char *)ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
1028 GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_RNG_ERROR);
1033 case EVP_CTRL_PBE_PRF_NID:
1035 const char *params = get_gost_engine_param(GOST_PARAM_PBE_PARAMS);
1036 int nid = NID_id_tc26_hmac_gost_3411_2012_512;
1039 if (!strcmp("md_gost12_256", params))
1040 nid = NID_id_tc26_hmac_gost_3411_2012_256;
1041 else if (!strcmp("md_gost12_512", params))
1042 nid = NID_id_tc26_hmac_gost_3411_2012_512;
1043 else if (!strcmp("md_gost94", params))
1044 nid = NID_id_HMACGostR3411_94;
1046 *((int *)ptr) = nid;
1052 case EVP_CTRL_SET_SBOX:
1054 struct ossl_gost_cipher_ctx *c =
1055 EVP_CIPHER_CTX_get_cipher_data(ctx);
1064 if (c->count != 0) {
1068 nid = OBJ_txt2nid(ptr);
1069 if (nid == NID_undef) {
1073 cur_meshing = c->key_meshing;
1074 ret = gost_cipher_set_param(c, nid);
1075 c->key_meshing = cur_meshing;
1080 case EVP_CTRL_KEY_MESH:
1082 struct ossl_gost_cipher_ctx *c =
1083 EVP_CIPHER_CTX_get_cipher_data(ctx);
1089 if (c->count != 0) {
1093 c->key_meshing = arg;
1097 GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
1103 /* Control function for gost cipher */
1104 int magma_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
1107 case EVP_CTRL_RAND_KEY:
1109 ((unsigned char *)ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
1110 GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_RNG_ERROR);
1114 case EVP_CTRL_KEY_MESH:
1116 struct ossl_gost_cipher_ctx *c =
1117 EVP_CIPHER_CTX_get_cipher_data(ctx);
1123 if (c->count != 0) {
1127 c->key_meshing = arg;
1131 GOSTerr(GOST_F_MAGMA_CIPHER_CTL, GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
1137 static int magma_cipher_ctl_acpkm_omac(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
1141 case EVP_CTRL_PROCESS_UNPROTECTED:
1143 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
1144 STACK_OF(X509_ATTRIBUTE) *x = ptr;
1145 return gost2015_process_unprotected_attributes(x, arg, MAGMA_MAC_MAX_SIZE, c->tag);
1147 case EVP_CTRL_COPY: {
1148 EVP_CIPHER_CTX *out = ptr;
1149 struct ossl_gost_cipher_ctx *in_cctx = EVP_CIPHER_CTX_get_cipher_data(ctx);
1150 struct ossl_gost_cipher_ctx *out_cctx = EVP_CIPHER_CTX_get_cipher_data(out);
1152 if (in_cctx->omac_ctx == out_cctx->omac_ctx) {
1153 out_cctx->omac_ctx = EVP_MD_CTX_new();
1154 if (out_cctx->omac_ctx == NULL) {
1155 GOSTerr(GOST_F_MAGMA_CIPHER_CTL_ACPKM_OMAC, ERR_R_MALLOC_FAILURE);
1159 return EVP_MD_CTX_copy(out_cctx->omac_ctx, in_cctx->omac_ctx);
1162 return magma_cipher_ctl(ctx, type, arg, ptr);
1167 /* Set cipher parameters from ASN1 structure */
1168 int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
1171 unsigned char *buf = NULL;
1172 unsigned char *p = NULL;
1173 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
1174 GOST_CIPHER_PARAMS *gcp = GOST_CIPHER_PARAMS_new();
1175 ASN1_OCTET_STRING *os = NULL;
1177 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
1180 if (!ASN1_OCTET_STRING_set
1181 (gcp->iv, EVP_CIPHER_CTX_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx))) {
1182 GOST_CIPHER_PARAMS_free(gcp);
1183 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
1186 ASN1_OBJECT_free(gcp->enc_param_set);
1187 gcp->enc_param_set = OBJ_nid2obj(c->paramNID);
1189 len = i2d_GOST_CIPHER_PARAMS(gcp, NULL);
1190 p = buf = OPENSSL_malloc(len);
1192 GOST_CIPHER_PARAMS_free(gcp);
1193 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
1196 i2d_GOST_CIPHER_PARAMS(gcp, &p);
1197 GOST_CIPHER_PARAMS_free(gcp);
1199 os = ASN1_OCTET_STRING_new();
1201 if (!os || !ASN1_OCTET_STRING_set(os, buf, len)) {
1203 GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
1208 ASN1_TYPE_set(params, V_ASN1_SEQUENCE, os);
1212 /* Store parameters into ASN1 structure */
1213 int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
1216 GOST_CIPHER_PARAMS *gcp = NULL;
1218 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
1221 if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE) {
1225 p = params->value.sequence->data;
1227 gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
1228 params->value.sequence->length);
1230 len = gcp->iv->length;
1231 if (len != EVP_CIPHER_CTX_iv_length(ctx)) {
1232 GOST_CIPHER_PARAMS_free(gcp);
1233 GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS, GOST_R_INVALID_IV_LENGTH);
1237 nid = OBJ_obj2nid(gcp->enc_param_set);
1238 if (nid == NID_undef) {
1239 GOST_CIPHER_PARAMS_free(gcp);
1240 GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS,
1241 GOST_R_INVALID_CIPHER_PARAM_OID);
1245 if (!gost_cipher_set_param(c, nid)) {
1246 GOST_CIPHER_PARAMS_free(gcp);
1249 /*XXX missing non-const accessor */
1250 memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), gcp->iv->data,
1251 EVP_CIPHER_CTX_iv_length(ctx));
1253 GOST_CIPHER_PARAMS_free(gcp);
1258 #define MAGMA_UKM_LEN 12
1259 static int magma_set_asn1_parameters (EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
1261 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
1262 c->key_meshing = 8192;
1264 return gost2015_set_asn1_params(params, EVP_CIPHER_CTX_original_iv(ctx), 4,
1268 static int magma_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
1270 struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
1271 unsigned char iv[16];
1273 c->key_meshing = 8192;
1275 if (gost2015_get_asn1_params(params, MAGMA_UKM_LEN, iv, 4, c->kdf_seed) < 0)
1278 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, sizeof(iv));
1279 memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv, sizeof(iv));
1280 /* Key meshing 8 kb*/
1281 c->key_meshing = 8192;
1286 static int gost_imit_init(EVP_MD_CTX *ctx, gost_subst_block * block)
1288 struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
1289 memset(c->buffer, 0, sizeof(c->buffer));
1290 memset(c->partial_block, 0, sizeof(c->partial_block));
1295 gost_init(&(c->cctx), block);
1299 static int gost_imit_init_cpa(EVP_MD_CTX *ctx)
1301 return gost_imit_init(ctx, &Gost28147_CryptoProParamSetA);
1304 static int gost_imit_init_cp_12(EVP_MD_CTX *ctx)
1306 return gost_imit_init(ctx, &Gost28147_TC26ParamSetZ);
1309 static void mac_block_mesh(struct ossl_gost_imit_ctx *c,
1310 const unsigned char *data)
1313 * We are using NULL for iv because CryptoPro doesn't interpret
1314 * internal state of MAC algorithm as iv during keymeshing (but does
1315 * initialize internal state from iv in key transport
1317 assert(c->count % 8 == 0 && c->count <= 1024);
1318 if (c->key_meshing && c->count == 1024) {
1319 cryptopro_key_meshing(&(c->cctx), NULL);
1321 mac_block(&(c->cctx), c->buffer, data);
1322 c->count = c->count % 1024 + 8;
1325 int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count)
1327 struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
1328 const unsigned char *p = data;
1329 size_t bytes = count;
1330 if (!(c->key_set)) {
1331 GOSTerr(GOST_F_GOST_IMIT_UPDATE, GOST_R_MAC_KEY_NOT_SET);
1334 if (c->bytes_left) {
1336 for (i = c->bytes_left; i < 8 && bytes > 0; bytes--, i++, p++) {
1337 c->partial_block[i] = *p;
1340 mac_block_mesh(c, c->partial_block);
1347 mac_block_mesh(c, p);
1352 memcpy(c->partial_block, p, bytes);
1354 c->bytes_left = bytes;
1358 int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md)
1360 struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
1362 GOSTerr(GOST_F_GOST_IMIT_FINAL, GOST_R_MAC_KEY_NOT_SET);
1365 if (c->count == 0 && c->bytes_left) {
1366 unsigned char buffer[8];
1367 memset(buffer, 0, 8);
1368 gost_imit_update(ctx, buffer, 8);
1370 if (c->bytes_left) {
1372 for (i = c->bytes_left; i < 8; i++) {
1373 c->partial_block[i] = 0;
1375 mac_block_mesh(c, c->partial_block);
1377 get_mac(c->buffer, 8 * c->dgst_size, md);
1381 int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr)
1384 case EVP_MD_CTRL_KEY_LEN:
1385 *((unsigned int *)(ptr)) = 32;
1387 case EVP_MD_CTRL_SET_KEY:
1389 struct ossl_gost_imit_ctx *gost_imit_ctx = EVP_MD_CTX_md_data(ctx);
1391 if (EVP_MD_meth_get_init(EVP_MD_CTX_md(ctx)) (ctx) <= 0) {
1392 GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_MAC_KEY_NOT_SET);
1395 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_NO_INIT);
1398 struct gost_mac_key *key = (struct gost_mac_key *)ptr;
1399 if (key->mac_param_nid != NID_undef) {
1400 const struct gost_cipher_info *param =
1401 get_encryption_params(OBJ_nid2obj(key->mac_param_nid));
1402 if (param == NULL) {
1403 GOSTerr(GOST_F_GOST_IMIT_CTRL,
1404 GOST_R_INVALID_MAC_PARAMS);
1407 gost_init(&(gost_imit_ctx->cctx), param->sblock);
1409 gost_key(&(gost_imit_ctx->cctx), key->key);
1410 gost_imit_ctx->key_set = 1;
1413 } else if (arg == 32) {
1414 gost_key(&(gost_imit_ctx->cctx), ptr);
1415 gost_imit_ctx->key_set = 1;
1418 GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_KEY_SIZE);
1421 case EVP_MD_CTRL_XOF_LEN:
1423 struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
1424 if (arg < 1 || arg > 8) {
1425 GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_SIZE);
1437 int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
1439 if (EVP_MD_CTX_md_data(to) && EVP_MD_CTX_md_data(from)) {
1440 memcpy(EVP_MD_CTX_md_data(to), EVP_MD_CTX_md_data(from),
1441 sizeof(struct ossl_gost_imit_ctx));
1446 /* Clean up imit ctx */
1447 int gost_imit_cleanup(EVP_MD_CTX *ctx)
1449 memset(EVP_MD_CTX_md_data(ctx), 0, sizeof(struct ossl_gost_imit_ctx));