OpenSSL  1.0.1c
 All Classes Files Functions Variables Typedefs Enumerations Enumerator Macros
gost_lcl.h
Go to the documentation of this file.
1 #ifndef GOST_TOOLS_H
2 #define GOST_TOOLS_H
3 /**********************************************************************
4  * gost_lcl.h *
5  * Copyright (c) 2006 Cryptocom LTD *
6  * This file is distributed under the same license as OpenSSL *
7  * *
8  * Internal declarations used in GOST engine *
9  * OpenSSL 0.9.9 libraries required to compile and use *
10  * this code *
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>
19 #include "gost89.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)
25 
26  extern const ENGINE_CMD_DEFN gost_cmds[];
27  int gost_control_func(ENGINE *e,int cmd, long i, void *p, void (*f)(void));
28  const char *get_gost_engine_param(int param);
29  int gost_set_default_param(int param, const char *value);
30  void gost_param_free(void);
31 
32 /* method registration */
33 
34  int register_ameth_gost (int nid, EVP_PKEY_ASN1_METHOD **ameth, const char* pemstr, const char* info);
35  int register_pmeth_gost (int id, EVP_PKEY_METHOD **pmeth, int flags);
36 
37 /* Gost-specific pmeth control-function parameters */
38 /* For GOST R34.10 parameters */
39 #define param_ctrl_string "paramset"
40 #define EVP_PKEY_CTRL_GOST_PARAMSET (EVP_PKEY_ALG_CTRL+1)
41 /* For GOST 28147 MAC */
42 #define key_ctrl_string "key"
43 #define hexkey_ctrl_string "hexkey"
44 #define EVP_PKEY_CTRL_GOST_MAC_HEXKEY (EVP_PKEY_ALG_CTRL+3)
45 /* Pmeth internal representation */
46  struct gost_pmeth_data {
47  int sign_param_nid; /* Should be set whenever parameters are filled */
48  EVP_MD *md;
49  unsigned char *shared_ukm;
50  int peer_key_used;
51  };
52 
53  struct gost_mac_pmeth_data {
54  int key_set;
55  EVP_MD *md;
56  unsigned char key[32];
57  } ;
58 /* GOST-specific ASN1 structures */
59 
60 
61 typedef struct {
62  ASN1_OCTET_STRING *encrypted_key;
63  ASN1_OCTET_STRING *imit;
64 } GOST_KEY_INFO;
65 
66 DECLARE_ASN1_FUNCTIONS(GOST_KEY_INFO)
67 
68 typedef struct {
69  ASN1_OBJECT *cipher;
70  X509_PUBKEY *ephem_key;
71  ASN1_OCTET_STRING *eph_iv;
72 } GOST_KEY_AGREEMENT_INFO;
73 
74 DECLARE_ASN1_FUNCTIONS(GOST_KEY_AGREEMENT_INFO)
75 
76 typedef struct {
77  GOST_KEY_INFO *key_info;
78  GOST_KEY_AGREEMENT_INFO *key_agreement_info;
79 } GOST_KEY_TRANSPORT;
80 
81 DECLARE_ASN1_FUNCTIONS(GOST_KEY_TRANSPORT)
82 
83 typedef struct { /* FIXME incomplete */
84  GOST_KEY_TRANSPORT *gkt;
85 } GOST_CLIENT_KEY_EXCHANGE_PARAMS;
86 
87 /* Hacks to shorten symbols to 31 characters or less, or OpenVMS.
88  This mimics what's done in symhacks.h, but since this is a very
89  local header file, I prefered to put this hack directly here.
90  -- Richard Levitte */
91 #ifdef OPENSSL_SYS_VMS
92 #undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_it
93 #define GOST_CLIENT_KEY_EXCHANGE_PARAMS_it GOST_CLIENT_KEY_EXC_PARAMS_it
94 #undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_new
95 #define GOST_CLIENT_KEY_EXCHANGE_PARAMS_new GOST_CLIENT_KEY_EXC_PARAMS_new
96 #undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_free
97 #define GOST_CLIENT_KEY_EXCHANGE_PARAMS_free GOST_CLIENT_KEY_EXC_PARAMS_free
98 #undef d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS
99 #define d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS d2i_GOST_CLIENT_KEY_EXC_PARAMS
100 #undef i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS
101 #define i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS i2d_GOST_CLIENT_KEY_EXC_PARAMS
102 #endif /* End of hack */
103 DECLARE_ASN1_FUNCTIONS(GOST_CLIENT_KEY_EXCHANGE_PARAMS)
104 typedef struct {
105  ASN1_OBJECT *key_params;
106  ASN1_OBJECT *hash_params;
107  ASN1_OBJECT *cipher_params;
108 } GOST_KEY_PARAMS;
109 
110 DECLARE_ASN1_FUNCTIONS(GOST_KEY_PARAMS)
111 
112 typedef struct {
113  ASN1_OCTET_STRING *iv;
114  ASN1_OBJECT *enc_param_set;
115 } GOST_CIPHER_PARAMS;
116 
117 DECLARE_ASN1_FUNCTIONS(GOST_CIPHER_PARAMS)
118 /*============== Message digest and cipher related structures ==========*/
119  /* Structure used as EVP_MD_CTX-md_data.
120  * It allows to avoid storing in the md-data pointers to
121  * dynamically allocated memory.
122  *
123  * I cannot invent better way to avoid memory leaks, because
124  * openssl insist on invoking Init on Final-ed digests, and there
125  * is no reliable way to find out whether pointer in the passed
126  * md_data is valid or not.
127  * */
128 struct ossl_gost_digest_ctx {
129  gost_hash_ctx dctx;
130  gost_ctx cctx;
131 };
132 /* EVP_MD structure for GOST R 34.11 */
133 extern EVP_MD digest_gost;
134 /* EVP_MD structure for GOST 28147 in MAC mode */
135 extern EVP_MD imit_gost_cpa;
136 /* Cipher context used for EVP_CIPHER operation */
137 struct ossl_gost_cipher_ctx {
138  int paramNID;
139  off_t count;
140  int key_meshing;
141  gost_ctx cctx;
142 };
143 /* Structure to map parameter NID to S-block */
144 struct gost_cipher_info {
145  int nid;
146  gost_subst_block *sblock;
147  int key_meshing;
148 };
149 /* Context for MAC */
150 struct ossl_gost_imit_ctx {
151  gost_ctx cctx;
152  unsigned char buffer[8];
153  unsigned char partial_block[8];
154  off_t count;
155  int key_meshing;
156  int bytes_left;
157  int key_set;
158 };
159 /* Table which maps parameter NID to S-blocks */
160 extern struct gost_cipher_info gost_cipher_list[];
161 /* Find encryption params from ASN1_OBJECT */
162 const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj);
163 /* Implementation of GOST 28147-89 cipher in CFB and CNT modes */
164 extern EVP_CIPHER cipher_gost;
165 extern EVP_CIPHER cipher_gost_cpacnt;
166 #define EVP_MD_CTRL_KEY_LEN (EVP_MD_CTRL_ALG_CTRL+3)
167 #define EVP_MD_CTRL_SET_KEY (EVP_MD_CTRL_ALG_CTRL+4)
168 /* EVP_PKEY_METHOD key encryption callbacks */
169 /* From gost94_keyx.c */
170 int pkey_GOST94cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* key, size_t key_len );
171 
172 int pkey_GOST94cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* in, size_t in_len );
173 /* From gost2001_keyx.c */
174 int pkey_GOST01cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* key, size_t key_len );
175 
176 int pkey_GOST01cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* in, size_t in_len );
177 /* derive functions */
178 /* From gost2001_keyx.c */
179 int pkey_gost2001_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
180 /* From gost94_keyx.c */
181 int pkey_gost94_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
182 /* Internal functions for signature algorithms */
183 int fill_GOST94_params(DSA *dsa,int nid);
184 int fill_GOST2001_params(EC_KEY *eckey, int nid);
185 int gost_sign_keygen(DSA *dsa) ;
186 int gost2001_keygen(EC_KEY *ec) ;
187 
188 DSA_SIG *gost_do_sign(const unsigned char *dgst,int dlen, DSA *dsa) ;
189 DSA_SIG *gost2001_do_sign(const unsigned char *dgst,int dlen, EC_KEY *eckey);
190 
191 int gost_do_verify(const unsigned char *dgst, int dgst_len,
192  DSA_SIG *sig, DSA *dsa) ;
193 int gost2001_do_verify(const unsigned char *dgst,int dgst_len,
194  DSA_SIG *sig, EC_KEY *ec);
195 int gost2001_compute_public(EC_KEY *ec) ;
196 int gost94_compute_public(DSA *dsa) ;
197 /*============== miscellaneous functions============================= */
198 /* from gost_sign.c */
199 /* Convert GOST R 34.11 hash sum to bignum according to standard */
200 BIGNUM *hashsum2bn(const unsigned char *dgst) ;
201 /* Store bignum in byte array of given length, prepending by zeros
202  * if nesseccary */
203 int store_bignum(BIGNUM *bn, unsigned char *buf,int len);
204 /* Read bignum, which can have few MSB all-zeros from buffer*/
205 BIGNUM *getbnfrombuf(const unsigned char *buf,size_t len);
206 /* Pack GOST R 34.10 signature according to CryptoPro rules */
207 int pack_sign_cp(DSA_SIG *s,int order,unsigned char *sig, size_t *siglen);
208 /* Unpack GOST R 34.10 signature according to CryptoPro rules */
209 DSA_SIG *unpack_cp_signature(const unsigned char *sig,size_t siglen) ;
210 /* from ameth.c */
211 /* Get private key as BIGNUM from both R 34.10-94 and R 34.10-2001 keys*/
212 /* Returns pointer into EVP_PKEY structure */
213 BIGNUM* gost_get0_priv_key(const EVP_PKEY *pkey) ;
214 /* Find NID by GOST 94 parameters */
215 int gost94_nid_by_params(DSA *p) ;
216 
217 
218 #endif
Generated on Thu Jan 10 2013 09:53:41 for OpenSSL by   doxygen 1.8.2