3 /**********************************************************************
5 * Copyright (c) 2006 Cryptocom LTD *
6 * Copyright (c) 2020 Vitaly Chikunov <vt@altlinux.org> *
7 * This file is distributed under the same license as OpenSSL *
9 * Internal declarations used in GOST engine *
10 * OpenSSL 0.9.9 libraries required to compile and use *
12 **********************************************************************/
13 # include <openssl/bn.h>
14 # include <openssl/evp.h>
15 # include <openssl/asn1t.h>
16 # include <openssl/x509.h>
17 # include <openssl/engine.h>
18 # include <openssl/ec.h>
20 # include "gosthash.h"
21 /* Control commands */
22 # define GOST_PARAM_CRYPT_PARAMS 0
23 # define GOST_PARAM_PBE_PARAMS 1
24 # define GOST_PARAM_PK_FORMAT 2
25 # define GOST_PARAM_MAX 3
26 # define GOST_CTRL_CRYPT_PARAMS (ENGINE_CMD_BASE+GOST_PARAM_CRYPT_PARAMS)
27 # define GOST_CTRL_PBE_PARAMS (ENGINE_CMD_BASE+GOST_PARAM_PBE_PARAMS)
28 # define GOST_CTRL_PK_FORMAT (ENGINE_CMD_BASE+GOST_PARAM_PK_FORMAT)
30 typedef struct R3410_ec {
41 extern R3410_ec_params R3410_2001_paramset[],
42 *R3410_2012_256_paramset, R3410_2012_512_paramset[];
44 extern const ENGINE_CMD_DEFN gost_cmds[];
45 int gost_control_func(ENGINE *e, int cmd, long i, void *p, void (*f) (void));
46 const char *get_gost_engine_param(int param);
47 int gost_set_default_param(int param, const char *value);
48 void gost_param_free(void);
50 /* method registration */
52 int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth,
53 const char *pemstr, const char *info);
54 int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth, int flags);
56 /* Gost-specific pmeth control-function parameters */
57 /* For GOST R34.10 parameters */
58 # define param_ctrl_string "paramset"
59 # define ukm_ctrl_string "ukmhex"
60 # define EVP_PKEY_CTRL_GOST_PARAMSET (EVP_PKEY_ALG_CTRL+1)
61 /* For GOST 28147 MAC */
62 # define key_ctrl_string "key"
63 # define hexkey_ctrl_string "hexkey"
64 # define maclen_ctrl_string "size"
65 # define EVP_PKEY_CTRL_GOST_MAC_HEXKEY (EVP_PKEY_ALG_CTRL+3)
66 # define EVP_PKEY_CTRL_MAC_LEN (EVP_PKEY_ALG_CTRL+5)
67 /* Pmeth internal representation */
68 struct gost_pmeth_data {
69 int sign_param_nid; /* Should be set whenever parameters are
72 unsigned char shared_ukm[32];
73 size_t shared_ukm_size;
75 int cipher_nid; /* KExp15/KImp15 algs */
78 struct gost_mac_pmeth_data {
83 unsigned char key[32];
88 unsigned char key[32];
91 /* GOST-specific ASN1 structures */
94 ASN1_OCTET_STRING *encrypted_key;
95 ASN1_OCTET_STRING *imit;
98 DECLARE_ASN1_FUNCTIONS(GOST_KEY_INFO)
102 X509_PUBKEY *ephem_key;
103 ASN1_OCTET_STRING *eph_iv;
104 } GOST_KEY_AGREEMENT_INFO;
106 DECLARE_ASN1_FUNCTIONS(GOST_KEY_AGREEMENT_INFO)
109 GOST_KEY_INFO *key_info;
110 GOST_KEY_AGREEMENT_INFO *key_agreement_info;
111 } GOST_KEY_TRANSPORT;
113 DECLARE_ASN1_FUNCTIONS(GOST_KEY_TRANSPORT)
115 typedef struct { /* FIXME incomplete */
116 GOST_KEY_TRANSPORT *gkt;
117 } GOST_CLIENT_KEY_EXCHANGE_PARAMS;
119 /* PSKeyTransport ::= SEQUENCE {
121 ephemeralPublicKey SubjectPublicKeyInfo
123 SubjectPublicKeyInfo ::= SEQUENCE {
124 algorithm AlgorithmIdentifier,
125 subjectPublicKey BITSTRING
127 AlgorithmIdentifier ::= SEQUENCE {
128 algorithm OBJECT IDENTIFIER,
129 parameters ANY OPTIONAL
131 typedef struct PSKeyTransport_st {
132 ASN1_OCTET_STRING *psexp;
133 X509_PUBKEY *ephem_key;
134 ASN1_OCTET_STRING *ukm;
135 } PSKeyTransport_gost;
137 DECLARE_ASN1_FUNCTIONS(PSKeyTransport_gost)
139 * Hacks to shorten symbols to 31 characters or less, or OpenVMS. This mimics
140 * what's done in symhacks.h, but since this is a very local header file, I
141 * prefered to put this hack directly here. -- Richard Levitte
143 # ifdef OPENSSL_SYS_VMS
144 # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_it
145 # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_it GOST_CLIENT_KEY_EXC_PARAMS_it
146 # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_new
147 # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_new GOST_CLIENT_KEY_EXC_PARAMS_new
148 # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_free
149 # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_free GOST_CLIENT_KEY_EXC_PARAMS_free
150 # undef d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS
151 # define d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS d2i_GOST_CLIENT_KEY_EXC_PARAMS
152 # undef i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS
153 # define i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS i2d_GOST_CLIENT_KEY_EXC_PARAMS
154 # endif /* End of hack */
155 DECLARE_ASN1_FUNCTIONS(GOST_CLIENT_KEY_EXCHANGE_PARAMS)
157 ASN1_OBJECT *key_params;
158 ASN1_OBJECT *hash_params;
159 ASN1_OBJECT *cipher_params;
162 DECLARE_ASN1_FUNCTIONS(GOST_KEY_PARAMS)
165 ASN1_OCTET_STRING *iv;
166 ASN1_OBJECT *enc_param_set;
167 } GOST_CIPHER_PARAMS;
169 DECLARE_ASN1_FUNCTIONS(GOST_CIPHER_PARAMS)
172 ASN1_OCTET_STRING *ukm;
173 } GOST2015_CIPHER_PARAMS;
175 DECLARE_ASN1_FUNCTIONS(GOST2015_CIPHER_PARAMS)
178 ASN1_OCTET_STRING *masked_priv_key;
179 ASN1_OCTET_STRING *public_key;
182 DECLARE_ASN1_FUNCTIONS(MASKED_GOST_KEY)
184 /*============== Message digest and cipher related structures ==========*/
186 * Structure used as EVP_MD_CTX-md_data. It allows to avoid storing
187 * in the md-data pointers to dynamically allocated memory. I
188 * cannot invent better way to avoid memory leaks, because openssl
189 * insist on invoking Init on Final-ed digests, and there is no
190 * reliable way to find out whether pointer in the passed md_data is
193 struct ossl_gost_digest_ctx {
197 /* Cipher context used for EVP_CIPHER operation */
198 struct ossl_gost_cipher_ctx {
202 unsigned char kdf_seed[8];
203 unsigned char tag[8];
205 EVP_MD_CTX *omac_ctx;
207 /* Structure to map parameter NID to S-block */
208 struct gost_cipher_info {
210 gost_subst_block *sblock;
213 /* Context for MAC */
214 struct ossl_gost_imit_ctx {
216 unsigned char buffer[8];
217 unsigned char partial_block[8];
224 /* Find encryption params from ASN1_OBJECT */
225 const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj);
227 void inc_counter(unsigned char *counter, size_t counter_bytes);
229 # define EVP_MD_CTRL_KEY_LEN (EVP_MD_CTRL_ALG_CTRL+3)
230 # define EVP_MD_CTRL_SET_KEY (EVP_MD_CTRL_ALG_CTRL+4)
231 /* EVP_PKEY_METHOD key encryption callbacks */
232 /* From gost_ec_keyx.c */
233 int pkey_gost_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
234 size_t *out_len, const unsigned char *key,
237 int pkey_gost_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
238 size_t *key_len, const unsigned char *in,
240 /* derive functions */
241 /* From gost_ec_keyx.c */
242 int pkey_gost_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
243 int fill_GOST_EC_params(EC_KEY *eckey, int nid);
244 int gost_ec_keygen(EC_KEY *ec);
246 ECDSA_SIG *gost_ec_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey);
247 int gost_ec_verify(const unsigned char *dgst, int dgst_len,
248 ECDSA_SIG *sig, EC_KEY *ec);
249 int gost_ec_compute_public(EC_KEY *ec);
250 int gost_ec_point_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
251 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
253 #define CURVEDEF(a) \
254 int point_mul_##a(const EC_GROUP *group, EC_POINT *r, const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);\
255 int point_mul_g_##a(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, BN_CTX *ctx);\
256 int point_mul_two_##a(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
258 CURVEDEF(id_GostR3410_2001_CryptoPro_A_ParamSet)
259 CURVEDEF(id_GostR3410_2001_CryptoPro_B_ParamSet)
260 CURVEDEF(id_GostR3410_2001_CryptoPro_C_ParamSet)
261 CURVEDEF(id_GostR3410_2001_TestParamSet)
262 CURVEDEF(id_tc26_gost_3410_2012_256_paramSetA)
263 CURVEDEF(id_tc26_gost_3410_2012_512_paramSetA)
264 CURVEDEF(id_tc26_gost_3410_2012_512_paramSetB)
265 CURVEDEF(id_tc26_gost_3410_2012_512_paramSetC)
268 int VKO_compute_key(unsigned char *shared_key,
269 const EC_POINT *pub_key, const EC_KEY *priv_key,
270 const unsigned char *ukm, const size_t ukm_size,
271 const int vko_dgst_nid);
274 int gost_kdftree2012_256(unsigned char *keyout, size_t keyout_len,
275 const unsigned char *key, size_t keylen,
276 const unsigned char *label, size_t label_len,
277 const unsigned char *seed, size_t seed_len,
278 const size_t representation);
280 int gost_tlstree(int cipher_nid, const unsigned char *in, unsigned char *out,
281 const unsigned char *tlsseq);
283 int gost_kexp15(const unsigned char *shared_key, const int shared_len,
284 int cipher_nid, const unsigned char *cipher_key,
285 int mac_nid, unsigned char *mac_key,
286 const unsigned char *iv, const size_t ivlen,
287 unsigned char *out, int *out_len);
288 int gost_kimp15(const unsigned char *expkey, const size_t expkeylen,
289 int cipher_nid, const unsigned char *cipher_key,
290 int mac_nid, unsigned char *mac_key,
291 const unsigned char *iv, const size_t ivlen,
292 unsigned char *shared_key);
293 /*============== miscellaneous functions============================= */
295 * Store bignum in byte array of given length, prepending by zeros if
298 int store_bignum(const BIGNUM *bn, unsigned char *buf, int len);
299 /* Pack GOST R 34.10 signature according to CryptoPro rules */
300 int pack_sign_cp(ECDSA_SIG *s, int order, unsigned char *sig, size_t *siglen);
302 /* Get private key as BIGNUM from both 34.10-2001 keys*/
303 /* Returns pointer into EVP_PKEY structure */
304 BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey);
306 /* Struct describing cipher and used for init/deinit.*/
307 struct gost_cipher_st {
308 struct gost_cipher_st *template; /* template struct */
311 int block_size; /* (bytes) */
312 int key_len; /* (bytes) */
315 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
316 const unsigned char *iv, int enc);
317 int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
318 const unsigned char *in, size_t inl);
319 int (*cleanup)(EVP_CIPHER_CTX *);
321 int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *);
322 int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *);
323 int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
325 typedef struct gost_cipher_st GOST_cipher;
327 EVP_CIPHER *GOST_init_cipher(GOST_cipher *c);
328 void GOST_deinit_cipher(GOST_cipher *c);
330 extern GOST_cipher Gost28147_89_cipher;
331 extern GOST_cipher Gost28147_89_cbc_cipher;
332 extern GOST_cipher Gost28147_89_cnt_cipher;
333 extern GOST_cipher Gost28147_89_cnt_12_cipher;
334 extern GOST_cipher magma_ctr_cipher;
335 extern GOST_cipher magma_ctr_acpkm_cipher;
336 extern GOST_cipher magma_ctr_acpkm_omac_cipher;
337 extern GOST_cipher magma_cbc_cipher;
338 extern GOST_cipher grasshopper_ecb_cipher;
339 extern GOST_cipher grasshopper_cbc_cipher;
340 extern GOST_cipher grasshopper_cfb_cipher;
341 extern GOST_cipher grasshopper_ofb_cipher;
342 extern GOST_cipher grasshopper_ctr_cipher;
343 extern GOST_cipher grasshopper_ctr_acpkm_cipher;
344 extern GOST_cipher grasshopper_ctr_acpkm_omac_cipher;
345 extern GOST_cipher magma_kexp15_cipher;
346 extern GOST_cipher kuznyechik_kexp15_cipher;
348 struct gost_digest_st {
349 struct gost_digest_st *template;
357 int (*init)(EVP_MD_CTX *ctx);
358 int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
359 int (*final)(EVP_MD_CTX *ctx, unsigned char *md);
360 int (*copy)(EVP_MD_CTX *to, const EVP_MD_CTX *from);
361 int (*cleanup)(EVP_MD_CTX *ctx);
362 int (*ctrl)(EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
364 typedef struct gost_digest_st GOST_digest;
366 EVP_MD *GOST_init_digest(GOST_digest *d);
367 void GOST_deinit_digest(GOST_digest *d);
369 extern GOST_digest GostR3411_94_digest;
370 extern GOST_digest Gost28147_89_MAC_digest;
371 extern GOST_digest Gost28147_89_mac_12_digest;
372 extern GOST_digest GostR3411_2012_256_digest;
373 extern GOST_digest GostR3411_2012_512_digest;
374 extern GOST_digest magma_mac_digest;
375 extern GOST_digest grasshopper_mac_digest;
376 extern GOST_digest kuznyechik_ctracpkm_omac_digest;
379 /* vim: set expandtab cinoptions=\:0,l1,t0,g0,(0 sw=4 : */