3 /**********************************************************************
5 * Copyright (c) 2006 Cryptocom LTD *
6 * This file is distributed under the same license as OpenSSL *
8 * Internal declarations used in GOST engine *
9 * OpenSSL 0.9.9 libraries required to compile and use *
11 **********************************************************************/
12 # include <openssl/bn.h>
13 # include <openssl/evp.h>
14 # include <openssl/dsa.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_MAX 0
24 # define GOST_CTRL_CRYPT_PARAMS (ENGINE_CMD_BASE+GOST_PARAM_CRYPT_PARAMS)
26 typedef struct R3410_2001 {
36 extern R3410_2001_params R3410_2001_paramset[];
38 extern const ENGINE_CMD_DEFN gost_cmds[];
39 int gost_control_func(ENGINE *e, int cmd, long i, void *p, void (*f) (void));
40 const char *get_gost_engine_param(int param);
41 int gost_set_default_param(int param, const char *value);
42 void gost_param_free(void);
44 /* method registration */
46 int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth,
47 const char *pemstr, const char *info);
48 int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth, int flags);
50 /* Gost-specific pmeth control-function parameters */
51 /* For GOST R34.10 parameters */
52 # define param_ctrl_string "paramset"
53 # define EVP_PKEY_CTRL_GOST_PARAMSET (EVP_PKEY_ALG_CTRL+1)
54 /* For GOST 28147 MAC */
55 # define key_ctrl_string "key"
56 # define hexkey_ctrl_string "hexkey"
57 # define EVP_PKEY_CTRL_GOST_MAC_HEXKEY (EVP_PKEY_ALG_CTRL+3)
58 /* Pmeth internal representation */
59 struct gost_pmeth_data {
60 int sign_param_nid; /* Should be set whenever parameters are
63 unsigned char *shared_ukm;
67 struct gost_mac_pmeth_data {
70 unsigned char key[32];
72 /* GOST-specific ASN1 structures */
75 ASN1_OCTET_STRING *encrypted_key;
76 ASN1_OCTET_STRING *imit;
79 DECLARE_ASN1_FUNCTIONS(GOST_KEY_INFO)
83 X509_PUBKEY *ephem_key;
84 ASN1_OCTET_STRING *eph_iv;
85 } GOST_KEY_AGREEMENT_INFO;
87 DECLARE_ASN1_FUNCTIONS(GOST_KEY_AGREEMENT_INFO)
90 GOST_KEY_INFO *key_info;
91 GOST_KEY_AGREEMENT_INFO *key_agreement_info;
94 DECLARE_ASN1_FUNCTIONS(GOST_KEY_TRANSPORT)
96 typedef struct { /* FIXME incomplete */
97 GOST_KEY_TRANSPORT *gkt;
98 } GOST_CLIENT_KEY_EXCHANGE_PARAMS;
101 * Hacks to shorten symbols to 31 characters or less, or OpenVMS. This mimics
102 * what's done in symhacks.h, but since this is a very local header file, I
103 * prefered to put this hack directly here. -- Richard Levitte
105 # ifdef OPENSSL_SYS_VMS
106 # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_it
107 # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_it GOST_CLIENT_KEY_EXC_PARAMS_it
108 # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_new
109 # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_new GOST_CLIENT_KEY_EXC_PARAMS_new
110 # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_free
111 # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_free GOST_CLIENT_KEY_EXC_PARAMS_free
112 # undef d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS
113 # define d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS d2i_GOST_CLIENT_KEY_EXC_PARAMS
114 # undef i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS
115 # define i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS i2d_GOST_CLIENT_KEY_EXC_PARAMS
116 # endif /* End of hack */
117 DECLARE_ASN1_FUNCTIONS(GOST_CLIENT_KEY_EXCHANGE_PARAMS)
119 ASN1_OBJECT *key_params;
120 ASN1_OBJECT *hash_params;
121 ASN1_OBJECT *cipher_params;
124 DECLARE_ASN1_FUNCTIONS(GOST_KEY_PARAMS)
127 ASN1_OCTET_STRING *iv;
128 ASN1_OBJECT *enc_param_set;
129 } GOST_CIPHER_PARAMS;
131 DECLARE_ASN1_FUNCTIONS(GOST_CIPHER_PARAMS)
132 /*============== Message digest and cipher related structures ==========*/
134 * Structure used as EVP_MD_CTX-md_data. It allows to avoid storing
135 * in the md-data pointers to dynamically allocated memory. I
136 * cannot invent better way to avoid memory leaks, because openssl
137 * insist on invoking Init on Final-ed digests, and there is no
138 * reliable way to find out whether pointer in the passed md_data is
141 struct ossl_gost_digest_ctx {
145 /* EVP_MD structure for GOST R 34.11 */
146 extern EVP_MD digest_gost;
147 /* EVP_MD structure for GOST 28147 in MAC mode */
148 extern EVP_MD imit_gost_cpa;
149 /* Cipher context used for EVP_CIPHER operation */
150 struct ossl_gost_cipher_ctx {
156 /* Structure to map parameter NID to S-block */
157 struct gost_cipher_info {
159 gost_subst_block *sblock;
162 /* Context for MAC */
163 struct ossl_gost_imit_ctx {
165 unsigned char buffer[8];
166 unsigned char partial_block[8];
172 /* Table which maps parameter NID to S-blocks */
173 extern struct gost_cipher_info gost_cipher_list[];
174 /* Find encryption params from ASN1_OBJECT */
175 const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj);
176 /* Implementation of GOST 28147-89 cipher in CFB and CNT modes */
177 extern EVP_CIPHER cipher_gost;
178 extern EVP_CIPHER cipher_gost_cpacnt;
179 # define EVP_MD_CTRL_KEY_LEN (EVP_MD_CTRL_ALG_CTRL+3)
180 # define EVP_MD_CTRL_SET_KEY (EVP_MD_CTRL_ALG_CTRL+4)
181 /* EVP_PKEY_METHOD key encryption callbacks */
182 /* From gost2001_keyx.c */
183 int pkey_GOST01cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out,
184 size_t *outlen, const unsigned char *key,
187 int pkey_GOST01cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out,
188 size_t *outlen, const unsigned char *in,
190 /* derive functions */
191 /* From gost2001_keyx.c */
192 int pkey_gost2001_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
194 /* Internal functions for signature algorithms */
195 int fill_GOST2001_params(EC_KEY *eckey, int nid);
196 int gost_sign_keygen(DSA *dsa);
197 int gost2001_keygen(EC_KEY *ec);
199 DSA_SIG *gost_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
200 DSA_SIG *gost2001_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey);
202 int gost_do_verify(const unsigned char *dgst, int dgst_len,
203 DSA_SIG *sig, DSA *dsa);
204 int gost2001_do_verify(const unsigned char *dgst, int dgst_len,
205 DSA_SIG *sig, EC_KEY *ec);
206 int gost2001_compute_public(EC_KEY *ec);
207 /*============== miscellaneous functions============================= */
208 /* from gost_sign.c */
209 /* Convert GOST R 34.11 hash sum to bignum according to standard */
210 BIGNUM *hashsum2bn(const unsigned char *dgst);
212 * Store bignum in byte array of given length, prepending by zeros if
215 int store_bignum(BIGNUM *bn, unsigned char *buf, int len);
216 /* Read bignum, which can have few MSB all-zeros from buffer*/
217 BIGNUM *getbnfrombuf(const unsigned char *buf, size_t len);
218 /* Pack GOST R 34.10 signature according to CryptoPro rules */
219 int pack_sign_cp(DSA_SIG *s, int order, unsigned char *sig, size_t *siglen);
220 /* Unpack GOST R 34.10 signature according to CryptoPro rules */
221 DSA_SIG *unpack_cp_signature(const unsigned char *sig, size_t siglen);
223 /* Get private key as BIGNUM from both 34.10-2001 keys*/
224 /* Returns pointer into EVP_PKEY structure */
225 BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey);