1 /**********************************************************************
3 * Copyright (c) 2005-2006 Cryptocom LTD *
4 * This file is distributed under the same license as OpenSSL *
6 * Implementation of RFC 4357 (GOST R 34.10) Publick key method *
8 * Requires OpenSSL 0.9.9 for compilation *
9 **********************************************************************/
10 #include <openssl/evp.h>
11 #include <openssl/objects.h>
12 #include <openssl/ec.h>
13 #include <openssl/x509v3.h> /*For string_to_hex */
17 #include "gost_params.h"
19 #include "e_gost_err.h"
20 /*-------init, cleanup, copy - uniform for all algs ---------------*/
21 /* Allocates new gost_pmeth_data structure and assigns it as data */
22 static int pkey_gost_init(EVP_PKEY_CTX *ctx)
24 struct gost_pmeth_data *data;
25 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
26 data = OPENSSL_malloc(sizeof(struct gost_pmeth_data));
28 memset(data,0,sizeof(struct gost_pmeth_data));
29 if (pkey && EVP_PKEY_get0(pkey))
31 switch (EVP_PKEY_base_id(pkey)) {
32 case NID_id_GostR3410_94:
33 data->sign_param_nid = gost94_nid_by_params(EVP_PKEY_get0(pkey));
35 case NID_id_GostR3410_2001:
36 data->sign_param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey)));
42 EVP_PKEY_CTX_set_data(ctx,data);
46 /* Copies contents of gost_pmeth_data structure */
47 static int pkey_gost_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
49 struct gost_pmeth_data *dst_data,*src_data;
50 if (!pkey_gost_init(dst))
54 src_data = EVP_PKEY_CTX_get_data(src);
55 dst_data = EVP_PKEY_CTX_get_data(dst);
56 *dst_data = *src_data;
57 if (src_data -> shared_ukm) {
58 dst_data->shared_ukm=NULL;
63 /* Frees up gost_pmeth_data structure */
64 static void pkey_gost_cleanup (EVP_PKEY_CTX *ctx)
66 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
67 if (data->shared_ukm) OPENSSL_free(data->shared_ukm);
71 /* --------------------- control functions ------------------------------*/
72 static int pkey_gost_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
74 struct gost_pmeth_data *pctx = (struct gost_pmeth_data*)EVP_PKEY_CTX_get_data(ctx);
77 case EVP_PKEY_CTRL_MD:
79 if (EVP_MD_type((const EVP_MD *)p2) != NID_id_GostR3411_94)
81 GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_INVALID_DIGEST_TYPE);
84 pctx->md = (EVP_MD *)p2;
89 case EVP_PKEY_CTRL_GET_MD:
90 *(const EVP_MD **)p2 = pctx->md;
93 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
94 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
95 case EVP_PKEY_CTRL_PKCS7_SIGN:
96 case EVP_PKEY_CTRL_DIGESTINIT:
97 #ifndef OPENSSL_NO_CMS
98 case EVP_PKEY_CTRL_CMS_ENCRYPT:
99 case EVP_PKEY_CTRL_CMS_DECRYPT:
100 case EVP_PKEY_CTRL_CMS_SIGN:
104 case EVP_PKEY_CTRL_GOST_PARAMSET:
105 pctx->sign_param_nid = (int)p1;
107 case EVP_PKEY_CTRL_SET_IV:
108 pctx->shared_ukm=OPENSSL_malloc((int)p1);
109 memcpy(pctx->shared_ukm,p2,(int) p1);
111 case EVP_PKEY_CTRL_PEER_KEY:
112 if (p1 == 0 || p1 == 1) /* call from EVP_PKEY_derive_set_peer */
114 if (p1 == 2) /* TLS: peer key used? */
115 return pctx->peer_key_used;
116 if (p1 == 3) /* TLS: peer key used! */
117 return (pctx->peer_key_used = 1);
124 static int pkey_gost_ctrl94_str(EVP_PKEY_CTX *ctx,
125 const char *type, const char *value)
128 if(!strcmp(type, param_ctrl_string))
134 if (strlen(value) == 1)
136 switch(toupper((unsigned char)value[0]))
139 param_nid = NID_id_GostR3410_94_CryptoPro_A_ParamSet;
142 param_nid = NID_id_GostR3410_94_CryptoPro_B_ParamSet;
145 param_nid = NID_id_GostR3410_94_CryptoPro_C_ParamSet;
148 param_nid = NID_id_GostR3410_94_CryptoPro_D_ParamSet;
155 else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
157 switch (toupper((unsigned char)value[1]))
160 param_nid = NID_id_GostR3410_94_CryptoPro_XchA_ParamSet;
163 param_nid = NID_id_GostR3410_94_CryptoPro_XchB_ParamSet;
166 param_nid = NID_id_GostR3410_94_CryptoPro_XchC_ParamSet;
175 R3410_params *p = R3410_paramset;
176 param_nid = OBJ_txt2nid(value);
177 if (param_nid == NID_undef)
181 for (;p->nid != NID_undef;p++)
183 if (p->nid == param_nid) break;
185 if (p->nid == NID_undef)
187 GOSTerr(GOST_F_PKEY_GOST_CTRL94_STR,
188 GOST_R_INVALID_PARAMSET);
193 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
199 static int pkey_gost_ctrl01_str(EVP_PKEY_CTX *ctx,
200 const char *type, const char *value)
203 if(!strcmp(type, param_ctrl_string))
209 if (strlen(value) == 1)
211 switch(toupper((unsigned char)value[0]))
214 param_nid = NID_id_GostR3410_2001_CryptoPro_A_ParamSet;
217 param_nid = NID_id_GostR3410_2001_CryptoPro_B_ParamSet;
220 param_nid = NID_id_GostR3410_2001_CryptoPro_C_ParamSet;
223 param_nid = NID_id_GostR3410_2001_TestParamSet;
230 else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
232 switch (toupper((unsigned char)value[1]))
235 param_nid = NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet;
238 param_nid = NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet;
247 R3410_2001_params *p = R3410_2001_paramset;
248 param_nid = OBJ_txt2nid(value);
249 if (param_nid == NID_undef)
253 for (;p->nid != NID_undef;p++)
255 if (p->nid == param_nid) break;
257 if (p->nid == NID_undef)
259 GOSTerr(GOST_F_PKEY_GOST_CTRL01_STR,
260 GOST_R_INVALID_PARAMSET);
265 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
271 /* --------------------- key generation --------------------------------*/
273 static int pkey_gost_paramgen_init(EVP_PKEY_CTX *ctx) {
276 static int pkey_gost94_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
278 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
280 if (data->sign_param_nid == NID_undef)
282 GOSTerr(GOST_F_PKEY_GOST94_PARAMGEN,
283 GOST_R_NO_PARAMETERS_SET);
287 if (!fill_GOST94_params(dsa,data->sign_param_nid))
292 EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa);
295 static int pkey_gost01_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
297 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
300 if (data->sign_param_nid == NID_undef)
302 GOSTerr(GOST_F_PKEY_GOST01_PARAMGEN,
303 GOST_R_NO_PARAMETERS_SET);
308 if (!fill_GOST2001_params(ec,data->sign_param_nid))
313 EVP_PKEY_assign(pkey,NID_id_GostR3410_2001,ec);
317 /* Generates Gost_R3410_94_cp key */
318 static int pkey_gost94cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
321 if (!pkey_gost94_paramgen(ctx,pkey)) return 0;
322 dsa = EVP_PKEY_get0(pkey);
323 gost_sign_keygen(dsa);
327 /* Generates GOST_R3410 2001 key and assigns it using specified type */
328 static int pkey_gost01cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
331 if (!pkey_gost01_paramgen(ctx,pkey)) return 0;
332 ec = EVP_PKEY_get0(pkey);
339 /* ----------- sign callbacks --------------------------------------*/
341 static int pkey_gost94_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
342 const unsigned char *tbs, size_t tbs_len)
344 DSA_SIG *unpacked_sig=NULL;
345 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
346 if (!siglen) return 0;
349 *siglen= 64; /* better to check size of pkey->pkey.dsa-q */
352 unpacked_sig = gost_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
357 return pack_sign_cp(unpacked_sig,32,sig,siglen);
360 static int pkey_gost01_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
361 const unsigned char *tbs, size_t tbs_len)
363 DSA_SIG *unpacked_sig=NULL;
364 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
365 if (!siglen) return 0;
368 *siglen= 64; /* better to check size of curve order*/
371 unpacked_sig = gost2001_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
376 return pack_sign_cp(unpacked_sig,32,sig,siglen);
379 /* ------------------- verify callbacks ---------------------------*/
381 static int pkey_gost94_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
382 size_t siglen, const unsigned char *tbs, size_t tbs_len)
385 EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
386 DSA_SIG *s=unpack_cp_signature(sig,siglen);
388 if (pub_key) ok = gost_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
394 static int pkey_gost01_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
395 size_t siglen, const unsigned char *tbs, size_t tbs_len)
398 EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
399 DSA_SIG *s=unpack_cp_signature(sig,siglen);
402 fprintf(stderr,"R=");
403 BN_print_fp(stderr,s->r);
404 fprintf(stderr,"\nS=");
405 BN_print_fp(stderr,s->s);
406 fprintf(stderr,"\n");
408 if (pub_key) ok = gost2001_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
413 /* ------------- encrypt init -------------------------------------*/
414 /* Generates ephermeral key */
415 static int pkey_gost_encrypt_init(EVP_PKEY_CTX *ctx)
419 /* --------------- Derive init ------------------------------------*/
420 static int pkey_gost_derive_init(EVP_PKEY_CTX *ctx)
424 /* -------- PKEY_METHOD for GOST MAC algorithm --------------------*/
425 static int pkey_gost_mac_init(EVP_PKEY_CTX *ctx)
427 struct gost_mac_pmeth_data *data;
428 data = OPENSSL_malloc(sizeof(struct gost_mac_pmeth_data));
430 memset(data,0,sizeof(struct gost_mac_pmeth_data));
431 EVP_PKEY_CTX_set_data(ctx,data);
434 static void pkey_gost_mac_cleanup (EVP_PKEY_CTX *ctx)
436 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
439 static int pkey_gost_mac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
441 struct gost_mac_pmeth_data *dst_data,*src_data;
442 if (!pkey_gost_mac_init(dst))
446 src_data = EVP_PKEY_CTX_get_data(src);
447 dst_data = EVP_PKEY_CTX_get_data(dst);
448 *dst_data = *src_data;
452 static int pkey_gost_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
454 struct gost_mac_pmeth_data *data =
455 (struct gost_mac_pmeth_data*)EVP_PKEY_CTX_get_data(ctx);
459 case EVP_PKEY_CTRL_MD:
461 if (EVP_MD_type((const EVP_MD *)p2) != NID_id_Gost28147_89_MAC)
463 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_DIGEST_TYPE);
466 data->md = (EVP_MD *)p2;
471 case EVP_PKEY_CTRL_GET_MD:
472 *(const EVP_MD **)p2 = data->md;
475 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
476 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
477 case EVP_PKEY_CTRL_PKCS7_SIGN:
479 case EVP_PKEY_CTRL_SET_MAC_KEY:
482 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
483 GOST_R_INVALID_MAC_KEY_LENGTH);
487 memcpy(data->key,p2,32);
490 case EVP_PKEY_CTRL_DIGESTINIT:
492 EVP_MD_CTX *mctx = p2;
496 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
499 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
502 key = EVP_PKEY_get0(pkey);
505 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
511 return mctx->digest->md_ctrl(mctx,EVP_MD_CTRL_SET_KEY,32,key);
516 static int pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx,
517 const char *type, const char *value)
519 if (!strcmp(type, key_ctrl_string))
521 if (strlen(value)!=32)
523 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
524 GOST_R_INVALID_MAC_KEY_LENGTH);
527 return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
530 if (!strcmp(type, hexkey_ctrl_string))
532 long keylen; int ret;
533 unsigned char *keybuf=string_to_hex(value,&keylen);
536 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
537 GOST_R_INVALID_MAC_KEY_LENGTH);
538 OPENSSL_free(keybuf);
541 ret= pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
543 OPENSSL_free(keybuf);
550 static int pkey_gost_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
552 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
553 unsigned char *keydata;
556 GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN,GOST_R_MAC_KEY_NOT_SET);
559 keydata = OPENSSL_malloc(32);
560 memcpy(keydata,data->key,32);
561 EVP_PKEY_assign(pkey, NID_id_Gost28147_89_MAC, keydata);
565 static int pkey_gost_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
570 static int pkey_gost_mac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, EVP_MD_CTX *mctx)
572 unsigned int tmpsiglen=*siglen; /* for platforms where sizeof(int)!=sizeof(size_t)*/
579 ret=EVP_DigestFinal_ex(mctx,sig,&tmpsiglen);
583 /* ----------------------------------------------------------------*/
584 int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth,int flags)
586 *pmeth = EVP_PKEY_meth_new(id, flags);
587 if (!*pmeth) return 0;
591 case NID_id_GostR3410_94:
592 EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl94_str);
593 EVP_PKEY_meth_set_keygen(*pmeth,NULL,pkey_gost94cp_keygen);
594 EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost94_cp_sign);
595 EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost94_cp_verify);
596 EVP_PKEY_meth_set_encrypt(*pmeth,
597 pkey_gost_encrypt_init, pkey_GOST94cp_encrypt);
598 EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST94cp_decrypt);
599 EVP_PKEY_meth_set_derive(*pmeth,
600 pkey_gost_derive_init, pkey_gost94_derive);
601 EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost94_paramgen);
603 case NID_id_GostR3410_2001:
604 EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl01_str);
605 EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost01_cp_sign);
606 EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost01_cp_verify);
608 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost01cp_keygen);
610 EVP_PKEY_meth_set_encrypt(*pmeth,
611 pkey_gost_encrypt_init, pkey_GOST01cp_encrypt);
612 EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST01cp_decrypt);
613 EVP_PKEY_meth_set_derive(*pmeth,
614 pkey_gost_derive_init, pkey_gost2001_derive);
615 EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost01_paramgen);
617 case NID_id_Gost28147_89_MAC:
618 EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_mac_ctrl, pkey_gost_mac_ctrl_str);
619 EVP_PKEY_meth_set_signctx(*pmeth,pkey_gost_mac_signctx_init, pkey_gost_mac_signctx);
620 EVP_PKEY_meth_set_keygen(*pmeth,NULL, pkey_gost_mac_keygen);
621 EVP_PKEY_meth_set_init(*pmeth,pkey_gost_mac_init);
622 EVP_PKEY_meth_set_cleanup(*pmeth,pkey_gost_mac_cleanup);
623 EVP_PKEY_meth_set_copy(*pmeth,pkey_gost_mac_copy);
625 default: /*Unsupported method*/
628 EVP_PKEY_meth_set_init(*pmeth, pkey_gost_init);
629 EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_cleanup);
631 EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_copy);
632 /*FIXME derive etc...*/