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 if (pctx->shared_ukm == NULL)
111 GOSTerr(GOST_F_PKEY_GOST_CTRL, ERR_R_MALLOC_FAILURE);
114 memcpy(pctx->shared_ukm,p2,(int) p1);
116 case EVP_PKEY_CTRL_PEER_KEY:
117 if (p1 == 0 || p1 == 1) /* call from EVP_PKEY_derive_set_peer */
119 if (p1 == 2) /* TLS: peer key used? */
120 return pctx->peer_key_used;
121 if (p1 == 3) /* TLS: peer key used! */
122 return (pctx->peer_key_used = 1);
129 static int pkey_gost_ctrl94_str(EVP_PKEY_CTX *ctx,
130 const char *type, const char *value)
133 if(!strcmp(type, param_ctrl_string))
139 if (strlen(value) == 1)
141 switch(toupper((unsigned char)value[0]))
144 param_nid = NID_id_GostR3410_94_CryptoPro_A_ParamSet;
147 param_nid = NID_id_GostR3410_94_CryptoPro_B_ParamSet;
150 param_nid = NID_id_GostR3410_94_CryptoPro_C_ParamSet;
153 param_nid = NID_id_GostR3410_94_CryptoPro_D_ParamSet;
160 else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
162 switch (toupper((unsigned char)value[1]))
165 param_nid = NID_id_GostR3410_94_CryptoPro_XchA_ParamSet;
168 param_nid = NID_id_GostR3410_94_CryptoPro_XchB_ParamSet;
171 param_nid = NID_id_GostR3410_94_CryptoPro_XchC_ParamSet;
180 R3410_params *p = R3410_paramset;
181 param_nid = OBJ_txt2nid(value);
182 if (param_nid == NID_undef)
186 for (;p->nid != NID_undef;p++)
188 if (p->nid == param_nid) break;
190 if (p->nid == NID_undef)
192 GOSTerr(GOST_F_PKEY_GOST_CTRL94_STR,
193 GOST_R_INVALID_PARAMSET);
198 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
204 static int pkey_gost_ctrl01_str(EVP_PKEY_CTX *ctx,
205 const char *type, const char *value)
208 if(!strcmp(type, param_ctrl_string))
214 if (strlen(value) == 1)
216 switch(toupper((unsigned char)value[0]))
219 param_nid = NID_id_GostR3410_2001_CryptoPro_A_ParamSet;
222 param_nid = NID_id_GostR3410_2001_CryptoPro_B_ParamSet;
225 param_nid = NID_id_GostR3410_2001_CryptoPro_C_ParamSet;
228 param_nid = NID_id_GostR3410_2001_TestParamSet;
235 else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
237 switch (toupper((unsigned char)value[1]))
240 param_nid = NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet;
243 param_nid = NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet;
252 R3410_2001_params *p = R3410_2001_paramset;
253 param_nid = OBJ_txt2nid(value);
254 if (param_nid == NID_undef)
258 for (;p->nid != NID_undef;p++)
260 if (p->nid == param_nid) break;
262 if (p->nid == NID_undef)
264 GOSTerr(GOST_F_PKEY_GOST_CTRL01_STR,
265 GOST_R_INVALID_PARAMSET);
270 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
276 /* --------------------- key generation --------------------------------*/
278 static int pkey_gost_paramgen_init(EVP_PKEY_CTX *ctx) {
281 static int pkey_gost94_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
283 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
285 if (data->sign_param_nid == NID_undef)
287 GOSTerr(GOST_F_PKEY_GOST94_PARAMGEN,
288 GOST_R_NO_PARAMETERS_SET);
292 if (!fill_GOST94_params(dsa,data->sign_param_nid))
297 EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa);
300 static int pkey_gost01_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
302 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
305 if (data->sign_param_nid == NID_undef)
307 GOSTerr(GOST_F_PKEY_GOST01_PARAMGEN,
308 GOST_R_NO_PARAMETERS_SET);
313 if (!fill_GOST2001_params(ec,data->sign_param_nid))
318 EVP_PKEY_assign(pkey,NID_id_GostR3410_2001,ec);
322 /* Generates Gost_R3410_94_cp key */
323 static int pkey_gost94cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
326 if (!pkey_gost94_paramgen(ctx,pkey)) return 0;
327 dsa = EVP_PKEY_get0(pkey);
328 gost_sign_keygen(dsa);
332 /* Generates GOST_R3410 2001 key and assigns it using specified type */
333 static int pkey_gost01cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
336 if (!pkey_gost01_paramgen(ctx,pkey)) return 0;
337 ec = EVP_PKEY_get0(pkey);
344 /* ----------- sign callbacks --------------------------------------*/
346 static int pkey_gost94_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
347 const unsigned char *tbs, size_t tbs_len)
349 DSA_SIG *unpacked_sig=NULL;
350 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
351 if (!siglen) return 0;
354 *siglen= 64; /* better to check size of pkey->pkey.dsa-q */
357 unpacked_sig = gost_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
362 return pack_sign_cp(unpacked_sig,32,sig,siglen);
365 static int pkey_gost01_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
366 const unsigned char *tbs, size_t tbs_len)
368 DSA_SIG *unpacked_sig=NULL;
369 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
370 if (!siglen) return 0;
373 *siglen= 64; /* better to check size of curve order*/
376 unpacked_sig = gost2001_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
381 return pack_sign_cp(unpacked_sig,32,sig,siglen);
384 /* ------------------- verify callbacks ---------------------------*/
386 static int pkey_gost94_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
387 size_t siglen, const unsigned char *tbs, size_t tbs_len)
390 EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
391 DSA_SIG *s=unpack_cp_signature(sig,siglen);
393 if (pub_key) ok = gost_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
399 static int pkey_gost01_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
400 size_t siglen, const unsigned char *tbs, size_t tbs_len)
403 EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
404 DSA_SIG *s=unpack_cp_signature(sig,siglen);
407 fprintf(stderr,"R=");
408 BN_print_fp(stderr,s->r);
409 fprintf(stderr,"\nS=");
410 BN_print_fp(stderr,s->s);
411 fprintf(stderr,"\n");
413 if (pub_key) ok = gost2001_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
418 /* ------------- encrypt init -------------------------------------*/
419 /* Generates ephermeral key */
420 static int pkey_gost_encrypt_init(EVP_PKEY_CTX *ctx)
424 /* --------------- Derive init ------------------------------------*/
425 static int pkey_gost_derive_init(EVP_PKEY_CTX *ctx)
429 /* -------- PKEY_METHOD for GOST MAC algorithm --------------------*/
430 static int pkey_gost_mac_init(EVP_PKEY_CTX *ctx)
432 struct gost_mac_pmeth_data *data;
433 data = OPENSSL_malloc(sizeof(struct gost_mac_pmeth_data));
435 memset(data,0,sizeof(struct gost_mac_pmeth_data));
436 EVP_PKEY_CTX_set_data(ctx,data);
439 static void pkey_gost_mac_cleanup (EVP_PKEY_CTX *ctx)
441 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
444 static int pkey_gost_mac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
446 struct gost_mac_pmeth_data *dst_data,*src_data;
447 if (!pkey_gost_mac_init(dst))
451 src_data = EVP_PKEY_CTX_get_data(src);
452 dst_data = EVP_PKEY_CTX_get_data(dst);
453 *dst_data = *src_data;
457 static int pkey_gost_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
459 struct gost_mac_pmeth_data *data =
460 (struct gost_mac_pmeth_data*)EVP_PKEY_CTX_get_data(ctx);
464 case EVP_PKEY_CTRL_MD:
466 if (EVP_MD_type((const EVP_MD *)p2) != NID_id_Gost28147_89_MAC)
468 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_DIGEST_TYPE);
471 data->md = (EVP_MD *)p2;
476 case EVP_PKEY_CTRL_GET_MD:
477 *(const EVP_MD **)p2 = data->md;
480 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
481 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
482 case EVP_PKEY_CTRL_PKCS7_SIGN:
484 case EVP_PKEY_CTRL_SET_MAC_KEY:
487 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
488 GOST_R_INVALID_MAC_KEY_LENGTH);
492 memcpy(data->key,p2,32);
495 case EVP_PKEY_CTRL_DIGESTINIT:
497 EVP_MD_CTX *mctx = p2;
501 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
504 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
507 key = EVP_PKEY_get0(pkey);
510 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
516 return mctx->digest->md_ctrl(mctx,EVP_MD_CTRL_SET_KEY,32,key);
521 static int pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx,
522 const char *type, const char *value)
524 if (!strcmp(type, key_ctrl_string))
526 if (strlen(value)!=32)
528 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
529 GOST_R_INVALID_MAC_KEY_LENGTH);
532 return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
535 if (!strcmp(type, hexkey_ctrl_string))
537 long keylen; int ret;
538 unsigned char *keybuf=string_to_hex(value,&keylen);
541 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
542 GOST_R_INVALID_MAC_KEY_LENGTH);
543 OPENSSL_free(keybuf);
546 ret= pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
548 OPENSSL_free(keybuf);
555 static int pkey_gost_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
557 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
558 unsigned char *keydata;
561 GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN,GOST_R_MAC_KEY_NOT_SET);
564 keydata = OPENSSL_malloc(32);
567 memcpy(keydata,data->key,32);
568 EVP_PKEY_assign(pkey, NID_id_Gost28147_89_MAC, keydata);
572 static int pkey_gost_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
577 static int pkey_gost_mac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, EVP_MD_CTX *mctx)
579 unsigned int tmpsiglen=*siglen; /* for platforms where sizeof(int)!=sizeof(size_t)*/
586 ret=EVP_DigestFinal_ex(mctx,sig,&tmpsiglen);
590 /* ----------------------------------------------------------------*/
591 int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth,int flags)
593 *pmeth = EVP_PKEY_meth_new(id, flags);
594 if (!*pmeth) return 0;
598 case NID_id_GostR3410_94:
599 EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl94_str);
600 EVP_PKEY_meth_set_keygen(*pmeth,NULL,pkey_gost94cp_keygen);
601 EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost94_cp_sign);
602 EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost94_cp_verify);
603 EVP_PKEY_meth_set_encrypt(*pmeth,
604 pkey_gost_encrypt_init, pkey_GOST94cp_encrypt);
605 EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST94cp_decrypt);
606 EVP_PKEY_meth_set_derive(*pmeth,
607 pkey_gost_derive_init, pkey_gost94_derive);
608 EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost94_paramgen);
610 case NID_id_GostR3410_2001:
611 EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl01_str);
612 EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost01_cp_sign);
613 EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost01_cp_verify);
615 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost01cp_keygen);
617 EVP_PKEY_meth_set_encrypt(*pmeth,
618 pkey_gost_encrypt_init, pkey_GOST01cp_encrypt);
619 EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST01cp_decrypt);
620 EVP_PKEY_meth_set_derive(*pmeth,
621 pkey_gost_derive_init, pkey_gost2001_derive);
622 EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost01_paramgen);
624 case NID_id_Gost28147_89_MAC:
625 EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_mac_ctrl, pkey_gost_mac_ctrl_str);
626 EVP_PKEY_meth_set_signctx(*pmeth,pkey_gost_mac_signctx_init, pkey_gost_mac_signctx);
627 EVP_PKEY_meth_set_keygen(*pmeth,NULL, pkey_gost_mac_keygen);
628 EVP_PKEY_meth_set_init(*pmeth,pkey_gost_mac_init);
629 EVP_PKEY_meth_set_cleanup(*pmeth,pkey_gost_mac_cleanup);
630 EVP_PKEY_meth_set_copy(*pmeth,pkey_gost_mac_copy);
632 default: /*Unsupported method*/
635 EVP_PKEY_meth_set_init(*pmeth, pkey_gost_init);
636 EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_cleanup);
638 EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_copy);
639 /*FIXME derive etc...*/