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...*/