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gost_eng.c
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1 /**********************************************************************
2  * gost_eng.c *
3  * Copyright (c) 2005-2006 Cryptocom LTD *
4  * This file is distributed under the same license as OpenSSL *
5  * *
6  * Main file of GOST engine *
7  * for OpenSSL *
8  * Requires OpenSSL 0.9.9 for compilation *
9  **********************************************************************/
10 #include <string.h>
11 #include <openssl/crypto.h>
12 #include <openssl/err.h>
13 #include <openssl/evp.h>
14 #include <openssl/engine.h>
15 #include <openssl/obj_mac.h>
16 #include "e_gost_err.h"
17 #include "gost_lcl.h"
18 static const char *engine_gost_id = "gost";
19 static const char *engine_gost_name = "Reference implementation of GOST engine";
20 
21 /* Symmetric cipher and digest function registrar */
22 
23 static int gost_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
24  const int **nids, int nid);
25 
26 static int gost_digests(ENGINE *e, const EVP_MD **digest,
27  const int **nids, int ind);
28 
29 static int gost_pkey_meths (ENGINE *e, EVP_PKEY_METHOD **pmeth,
30  const int **nids, int nid);
31 
32 static int gost_pkey_asn1_meths (ENGINE *e, EVP_PKEY_ASN1_METHOD **ameth,
33  const int **nids, int nid);
34 
35 static int gost_cipher_nids[] =
36  {NID_id_Gost28147_89, NID_gost89_cnt,0};
37 
38 static int gost_digest_nids[] =
39  {NID_id_GostR3411_94,NID_id_Gost28147_89_MAC, 0};
40 
41 static int gost_pkey_meth_nids[] =
42  {NID_id_GostR3410_94,
43  NID_id_GostR3410_2001, NID_id_Gost28147_89_MAC, 0};
44 
45 static EVP_PKEY_METHOD *pmeth_GostR3410_94 = NULL,
46  *pmeth_GostR3410_2001 = NULL,
47  *pmeth_Gost28147_MAC = NULL;
48 
49 static EVP_PKEY_ASN1_METHOD *ameth_GostR3410_94 = NULL,
50  *ameth_GostR3410_2001 = NULL,
51  *ameth_Gost28147_MAC = NULL;
52 
53 
54 static int gost_engine_init(ENGINE *e)
55  {
56  return 1;
57  }
58 
59 static int gost_engine_finish(ENGINE *e)
60  {
61  return 1;
62  }
63 
64 static int gost_engine_destroy(ENGINE *e)
65  {
66  gost_param_free();
67  return 1;
68  }
69 
70 static int bind_gost (ENGINE *e,const char *id)
71  {
72  int ret = 0;
73  if (id && strcmp(id, engine_gost_id)) return 0;
74 
75  if (!ENGINE_set_id(e, engine_gost_id))
76  {
77  printf("ENGINE_set_id failed\n");
78  goto end;
79  }
80  if (!ENGINE_set_name(e, engine_gost_name))
81  {
82  printf("ENGINE_set_name failed\n");
83  goto end;
84  }
85  if (!ENGINE_set_digests(e, gost_digests))
86  {
87  printf("ENGINE_set_digests failed\n");
88  goto end;
89  }
90  if (! ENGINE_set_ciphers(e, gost_ciphers))
91  {
92  printf("ENGINE_set_ciphers failed\n");
93  goto end;
94  }
95  if (! ENGINE_set_pkey_meths(e, gost_pkey_meths))
96  {
97  printf("ENGINE_set_pkey_meths failed\n");
98  goto end;
99  }
100  if (! ENGINE_set_pkey_asn1_meths(e, gost_pkey_asn1_meths))
101  {
102  printf("ENGINE_set_pkey_asn1_meths failed\n");
103  goto end;
104  }
105  /* Control function and commands */
106  if (!ENGINE_set_cmd_defns(e,gost_cmds))
107  {
108  fprintf(stderr,"ENGINE_set_cmd_defns failed\n");
109  goto end;
110  }
111  if (!ENGINE_set_ctrl_function(e,gost_control_func))
112  {
113  fprintf(stderr,"ENGINE_set_ctrl_func failed\n");
114  goto end;
115  }
116  if ( ! ENGINE_set_destroy_function(e, gost_engine_destroy)
117  || ! ENGINE_set_init_function(e,gost_engine_init)
118  || ! ENGINE_set_finish_function(e,gost_engine_finish))
119  {
120  goto end;
121  }
122 
123  if (!register_ameth_gost(NID_id_GostR3410_94, &ameth_GostR3410_94, "GOST94", "GOST R 34.10-94")) goto end;
124  if (!register_ameth_gost(NID_id_GostR3410_2001, &ameth_GostR3410_2001, "GOST2001", "GOST R 34.10-2001")) goto end;
125  if (!register_ameth_gost(NID_id_Gost28147_89_MAC, &ameth_Gost28147_MAC,
126  "GOST-MAC", "GOST 28147-89 MAC")) goto end;
127 
128  if (!register_pmeth_gost(NID_id_GostR3410_94, &pmeth_GostR3410_94, 0)) goto end;
129  if (!register_pmeth_gost(NID_id_GostR3410_2001, &pmeth_GostR3410_2001, 0)) goto end;
130  if (!register_pmeth_gost(NID_id_Gost28147_89_MAC, &pmeth_Gost28147_MAC, 0))
131  goto end;
132  if ( ! ENGINE_register_ciphers(e)
133  || ! ENGINE_register_digests(e)
134  || ! ENGINE_register_pkey_meths(e)
135  /* These two actually should go in LIST_ADD command */
136  || ! EVP_add_cipher(&cipher_gost)
137  || ! EVP_add_cipher(&cipher_gost_cpacnt)
138  || ! EVP_add_digest(&digest_gost)
139  || ! EVP_add_digest(&imit_gost_cpa)
140  )
141  {
142  goto end;
143  }
144 
145  ERR_load_GOST_strings();
146  ret = 1;
147  end:
148  return ret;
149  }
150 
151 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
152 IMPLEMENT_DYNAMIC_BIND_FN(bind_gost)
153 IMPLEMENT_DYNAMIC_CHECK_FN()
154 #endif /* ndef OPENSSL_NO_DYNAMIC_ENGINE */
155 
156 static int gost_digests(ENGINE *e, const EVP_MD **digest,
157  const int **nids, int nid)
158  {
159  int ok =1 ;
160  if (!digest)
161  {
162  *nids = gost_digest_nids;
163  return 2;
164  }
165  /*printf("Digest no %d requested\n",nid);*/
166  if(nid == NID_id_GostR3411_94)
167  {
168  *digest = &digest_gost;
169  }
170  else if (nid == NID_id_Gost28147_89_MAC)
171  {
172  *digest = &imit_gost_cpa;
173  }
174  else
175  {
176  ok =0;
177  *digest = NULL;
178  }
179  return ok;
180  }
181 
182 static int gost_ciphers (ENGINE *e,const EVP_CIPHER **cipher,
183  const int **nids, int nid)
184  {
185  int ok = 1;
186  if (!cipher)
187  {
188  *nids = gost_cipher_nids;
189  return 2; /* two ciphers are supported */
190  }
191 
192  if(nid == NID_id_Gost28147_89)
193  {
194  *cipher = &cipher_gost;
195  }
196  else if (nid == NID_gost89_cnt)
197  {
198  *cipher = &cipher_gost_cpacnt;
199  }
200  else
201  {
202  ok = 0;
203  *cipher = NULL;
204  }
205  return ok;
206  }
207 
208 static int gost_pkey_meths (ENGINE *e, EVP_PKEY_METHOD **pmeth,
209  const int **nids, int nid)
210  {
211  if (!pmeth)
212  {
213  *nids = gost_pkey_meth_nids;
214  return 3;
215  }
216 
217  switch (nid)
218  {
219  case NID_id_GostR3410_94: *pmeth = pmeth_GostR3410_94; return 1;
220  case NID_id_GostR3410_2001: *pmeth = pmeth_GostR3410_2001; return 1;
221  case NID_id_Gost28147_89_MAC: *pmeth = pmeth_Gost28147_MAC; return 1;
222  default:;
223  }
224 
225  *pmeth = NULL;
226  return 0;
227  }
228 
229 static int gost_pkey_asn1_meths (ENGINE *e, EVP_PKEY_ASN1_METHOD **ameth,
230  const int **nids, int nid)
231  {
232  if (!ameth)
233  {
234  *nids = gost_pkey_meth_nids;
235  return 3;
236  }
237  switch (nid)
238  {
239  case NID_id_GostR3410_94: *ameth = ameth_GostR3410_94; return 1;
240  case NID_id_GostR3410_2001: *ameth = ameth_GostR3410_2001; return 1;
241  case NID_id_Gost28147_89_MAC: *ameth = ameth_Gost28147_MAC; return 1;
242 
243  default:;
244  }
245 
246  *ameth = NULL;
247  return 0;
248  }
249 
250 #ifdef OPENSSL_NO_DYNAMIC_ENGINE
251 static ENGINE *engine_gost(void)
252  {
253  ENGINE *ret = ENGINE_new();
254  if (!ret)
255  return NULL;
256  if (!bind_gost(ret,engine_gost_id))
257  {
258  ENGINE_free(ret);
259  return NULL;
260  }
261  return ret;
262  }
263 
264 void ENGINE_load_gost(void)
265  {
266  ENGINE *toadd =engine_gost();
267  if (!toadd) return;
268  ENGINE_add(toadd);
269  ENGINE_free(toadd);
270  ERR_clear_error();
271  }
272 #endif
273 
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