945 lines
23 KiB
C
945 lines
23 KiB
C
/**********************************************************************
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* gost_ameth.c *
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* Copyright (c) 2005-2006 Cryptocom LTD *
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* This file is distributed under the same license as OpenSSL *
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* *
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* Implementation of RFC 4490/4491 ASN1 method *
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* for OpenSSL *
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* Requires OpenSSL 0.9.9 for compilation *
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**********************************************************************/
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#include <string.h>
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#include <openssl/crypto.h>
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#include <openssl/err.h>
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#include <openssl/engine.h>
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#include <openssl/evp.h>
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#include <openssl/asn1.h>
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#ifndef OPENSSL_NO_CMS
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#include <openssl/cms.h>
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#endif
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#include "gost_params.h"
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#include "gost_lcl.h"
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#include "e_gost_err.h"
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int gost94_nid_by_params(DSA *p)
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{
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R3410_params *gost_params;
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BIGNUM *q=BN_new();
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for (gost_params = R3410_paramset;gost_params->q!=NULL; gost_params++)
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{
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BN_dec2bn(&q,gost_params->q);
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if (!BN_cmp(q,p->q))
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{
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BN_free(q);
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return gost_params->nid;
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}
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}
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BN_free(q);
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return NID_undef;
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}
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static ASN1_STRING *encode_gost_algor_params(const EVP_PKEY *key)
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{
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ASN1_STRING *params = ASN1_STRING_new();
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GOST_KEY_PARAMS *gkp = GOST_KEY_PARAMS_new();
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int pkey_param_nid = NID_undef;
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if (!params || !gkp)
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{
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GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS,
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ERR_R_MALLOC_FAILURE);
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ASN1_STRING_free(params);
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params = NULL;
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goto err;
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}
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switch (EVP_PKEY_base_id(key))
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{
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case NID_id_GostR3410_2001:
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pkey_param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)key)));
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break;
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case NID_id_GostR3410_94:
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pkey_param_nid = (int) gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)key));
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if (pkey_param_nid == NID_undef)
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{
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GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS,
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GOST_R_INVALID_GOST94_PARMSET);
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ASN1_STRING_free(params);
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params=NULL;
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goto err;
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}
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break;
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}
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gkp->key_params = OBJ_nid2obj(pkey_param_nid);
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gkp->hash_params = OBJ_nid2obj(NID_id_GostR3411_94_CryptoProParamSet);
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/*gkp->cipher_params = OBJ_nid2obj(cipher_param_nid);*/
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params->length = i2d_GOST_KEY_PARAMS(gkp, ¶ms->data);
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if (params->length <=0 )
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{
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GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS,
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ERR_R_MALLOC_FAILURE);
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ASN1_STRING_free(params);
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params = NULL;
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goto err;
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}
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params ->type = V_ASN1_SEQUENCE;
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err:
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GOST_KEY_PARAMS_free(gkp);
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return params;
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}
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/* Parses GOST algorithm parameters from X509_ALGOR and
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* modifies pkey setting NID and parameters
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*/
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static int decode_gost_algor_params(EVP_PKEY *pkey, X509_ALGOR *palg)
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{
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ASN1_OBJECT *palg_obj =NULL;
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int ptype = V_ASN1_UNDEF;
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int pkey_nid = NID_undef,param_nid = NID_undef;
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void *_pval;
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ASN1_STRING *pval = NULL;
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const unsigned char *p;
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GOST_KEY_PARAMS *gkp = NULL;
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X509_ALGOR_get0(&palg_obj, &ptype, &_pval, palg);
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pval = _pval;
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if (ptype != V_ASN1_SEQUENCE)
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{
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GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
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GOST_R_BAD_KEY_PARAMETERS_FORMAT);
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return 0;
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}
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p=pval->data;
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pkey_nid = OBJ_obj2nid(palg_obj);
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gkp = d2i_GOST_KEY_PARAMS(NULL,&p,pval->length);
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if (!gkp)
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{
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GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
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GOST_R_BAD_PKEY_PARAMETERS_FORMAT);
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return 0;
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}
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param_nid = OBJ_obj2nid(gkp->key_params);
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GOST_KEY_PARAMS_free(gkp);
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EVP_PKEY_set_type(pkey,pkey_nid);
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switch (pkey_nid)
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{
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case NID_id_GostR3410_94:
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{
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DSA *dsa= EVP_PKEY_get0(pkey);
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if (!dsa)
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{
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dsa = DSA_new();
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if (!EVP_PKEY_assign(pkey,pkey_nid,dsa)) return 0;
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}
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if (!fill_GOST94_params(dsa,param_nid)) return 0;
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break;
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}
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case NID_id_GostR3410_2001:
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{
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EC_KEY *ec = EVP_PKEY_get0(pkey);
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if (!ec)
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{
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ec = EC_KEY_new();
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if (!EVP_PKEY_assign(pkey,pkey_nid,ec)) return 0;
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}
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if (!fill_GOST2001_params(ec,param_nid)) return 0;
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}
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}
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return 1;
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}
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static int gost_set_priv_key(EVP_PKEY *pkey,BIGNUM *priv)
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{
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switch (EVP_PKEY_base_id(pkey))
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{
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case NID_id_GostR3410_94:
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{
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DSA *dsa = EVP_PKEY_get0(pkey);
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if (!dsa)
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{
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dsa = DSA_new();
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EVP_PKEY_assign(pkey,EVP_PKEY_base_id(pkey),dsa);
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}
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dsa->priv_key = BN_dup(priv);
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if (!EVP_PKEY_missing_parameters(pkey))
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gost94_compute_public(dsa);
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break;
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}
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case NID_id_GostR3410_2001:
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{
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EC_KEY *ec = EVP_PKEY_get0(pkey);
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if (!ec)
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{
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ec = EC_KEY_new();
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EVP_PKEY_assign(pkey,EVP_PKEY_base_id(pkey),ec);
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}
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if (!EC_KEY_set_private_key(ec,priv)) return 0;
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if (!EVP_PKEY_missing_parameters(pkey))
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gost2001_compute_public(ec);
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break;
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}
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}
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return 1;
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}
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BIGNUM* gost_get0_priv_key(const EVP_PKEY *pkey)
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{
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switch (EVP_PKEY_base_id(pkey))
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{
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case NID_id_GostR3410_94:
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{
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DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pkey);
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if (!dsa)
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{
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return NULL;
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}
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if (!dsa->priv_key) return NULL;
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return dsa->priv_key;
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break;
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}
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case NID_id_GostR3410_2001:
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{
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EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pkey);
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const BIGNUM* priv;
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if (!ec)
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{
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return NULL;
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}
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if (!(priv=EC_KEY_get0_private_key(ec))) return NULL;
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return (BIGNUM *)priv;
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break;
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}
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}
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return NULL;
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}
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static int pkey_ctrl_gost(EVP_PKEY *pkey, int op,
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long arg1, void *arg2)
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{
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switch (op)
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{
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case ASN1_PKEY_CTRL_PKCS7_SIGN:
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if (arg1 == 0)
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{
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X509_ALGOR *alg1 = NULL, *alg2 = NULL;
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int nid = EVP_PKEY_base_id(pkey);
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PKCS7_SIGNER_INFO_get0_algs((PKCS7_SIGNER_INFO*)arg2,
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NULL, &alg1, &alg2);
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X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_id_GostR3411_94),
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V_ASN1_NULL, 0);
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if (nid == NID_undef)
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{
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return (-1);
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}
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X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
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}
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return 1;
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#ifndef OPENSSL_NO_CMS
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case ASN1_PKEY_CTRL_CMS_SIGN:
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if (arg1 == 0)
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{
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X509_ALGOR *alg1 = NULL, *alg2 = NULL;
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int nid = EVP_PKEY_base_id(pkey);
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CMS_SignerInfo_get0_algs((CMS_SignerInfo *)arg2,
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NULL, NULL, &alg1, &alg2);
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X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_id_GostR3411_94),
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V_ASN1_NULL, 0);
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if (nid == NID_undef)
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{
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return (-1);
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}
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X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
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}
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return 1;
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#endif
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case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
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if (arg1 == 0)
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{
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X509_ALGOR *alg;
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ASN1_STRING * params = encode_gost_algor_params(pkey);
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if (!params)
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{
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return -1;
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}
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PKCS7_RECIP_INFO_get0_alg((PKCS7_RECIP_INFO*)arg2, &alg);
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X509_ALGOR_set0(alg, OBJ_nid2obj(pkey->type),
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V_ASN1_SEQUENCE, params);
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}
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return 1;
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#ifndef OPENSSL_NO_CMS
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case ASN1_PKEY_CTRL_CMS_ENVELOPE:
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if (arg1 == 0)
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{
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X509_ALGOR *alg;
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ASN1_STRING * params = encode_gost_algor_params(pkey);
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if (!params)
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{
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return -1;
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}
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CMS_RecipientInfo_ktri_get0_algs((CMS_RecipientInfo *)arg2, NULL, NULL, &alg);
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X509_ALGOR_set0(alg, OBJ_nid2obj(pkey->type),
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V_ASN1_SEQUENCE, params);
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}
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return 1;
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#endif
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case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
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*(int *)arg2 = NID_id_GostR3411_94;
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return 2;
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}
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return -2;
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}
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/*----------------------- free functions * ------------------------------*/
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static void pkey_free_gost94(EVP_PKEY *key)
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{
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if (key->pkey.dsa)
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{
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DSA_free(key->pkey.dsa);
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}
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}
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static void pkey_free_gost01(EVP_PKEY *key)
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{
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if (key->pkey.ec)
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{
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EC_KEY_free(key->pkey.ec);
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}
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}
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/* ------------------ private key functions -----------------------------*/
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static int priv_decode_gost( EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf)
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{
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const unsigned char *pkey_buf = NULL,*p=NULL;
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int priv_len = 0;
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BIGNUM *pk_num=NULL;
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int ret =0;
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X509_ALGOR *palg =NULL;
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ASN1_OBJECT *palg_obj = NULL;
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ASN1_INTEGER *priv_key=NULL;
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if (!PKCS8_pkey_get0(&palg_obj,&pkey_buf,&priv_len,&palg,p8inf))
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return 0;
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p = pkey_buf;
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if (!decode_gost_algor_params(pk,palg))
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{
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return 0;
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}
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if (V_ASN1_OCTET_STRING == *p)
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{
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/* New format - Little endian octet string */
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unsigned char rev_buf[32];
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int i;
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ASN1_OCTET_STRING *s = d2i_ASN1_OCTET_STRING(NULL,&p,priv_len);
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if (!s||s->length !=32)
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{
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GOSTerr(GOST_F_PRIV_DECODE_GOST,
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EVP_R_DECODE_ERROR);
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return 0;
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}
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for (i=0;i<32;i++)
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{
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rev_buf[31-i]=s->data[i];
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}
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ASN1_STRING_free(s);
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pk_num = getbnfrombuf(rev_buf,32);
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}
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else
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{
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priv_key=d2i_ASN1_INTEGER(NULL,&p,priv_len);
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if (!priv_key) return 0;
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ret= ((pk_num = ASN1_INTEGER_to_BN(priv_key, NULL))!=NULL) ;
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ASN1_INTEGER_free(priv_key);
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if (!ret)
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{
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GOSTerr(GOST_F_PRIV_DECODE_GOST,
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EVP_R_DECODE_ERROR);
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return 0;
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}
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}
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ret= gost_set_priv_key(pk,pk_num);
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BN_free(pk_num);
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return ret;
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}
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/* ----------------------------------------------------------------------*/
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static int priv_encode_gost(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk)
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{
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ASN1_OBJECT *algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
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ASN1_STRING *params = encode_gost_algor_params(pk);
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unsigned char *priv_buf = NULL;
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int priv_len;
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ASN1_INTEGER *asn1key=NULL;
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if (!params)
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{
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return 0;
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}
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asn1key = BN_to_ASN1_INTEGER(gost_get0_priv_key(pk),NULL);
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priv_len = i2d_ASN1_INTEGER(asn1key,&priv_buf);
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ASN1_INTEGER_free(asn1key);
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return PKCS8_pkey_set0(p8,algobj,0,V_ASN1_SEQUENCE,params,
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priv_buf,priv_len);
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}
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/* --------- printing keys --------------------------------*/
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static int print_gost_94(BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx, int type)
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{
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int param_nid = NID_undef;
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|
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if (type == 2)
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{
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BIGNUM *key;
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|
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if (!BIO_indent(out,indent,128)) return 0;
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BIO_printf(out,"Private key: ");
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key = gost_get0_priv_key(pkey);
|
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if (!key)
|
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BIO_printf(out,"<undefined>");
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else
|
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BN_print(out,key);
|
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BIO_printf(out,"\n");
|
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}
|
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if (type >= 1)
|
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{
|
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BIGNUM *pubkey;
|
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|
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pubkey = ((DSA *)EVP_PKEY_get0((EVP_PKEY *)pkey))->pub_key;
|
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BIO_indent(out,indent,128);
|
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BIO_printf(out,"Public key: ");
|
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BN_print(out,pubkey);
|
|
BIO_printf(out,"\n");
|
|
}
|
|
|
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param_nid = gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
|
|
BIO_indent(out,indent,128);
|
|
BIO_printf(out, "Parameter set: %s\n",OBJ_nid2ln(param_nid));
|
|
return 1;
|
|
}
|
|
|
|
static int param_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
|
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ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_94(out, pkey, indent, pctx,0);
|
|
}
|
|
|
|
static int pub_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_94(out,pkey, indent, pctx,1);
|
|
}
|
|
static int priv_print_gost94(BIO *out,const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_94(out,pkey,indent,pctx,2);
|
|
}
|
|
|
|
static int print_gost_01(BIO *out, const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx, int type)
|
|
{
|
|
int param_nid = NID_undef;
|
|
if (type == 2)
|
|
{
|
|
BIGNUM *key;
|
|
|
|
if (!BIO_indent(out,indent,128)) return 0;
|
|
BIO_printf(out,"Private key: ");
|
|
key = gost_get0_priv_key(pkey);
|
|
if (!key)
|
|
BIO_printf(out,"<undefined)");
|
|
else
|
|
BN_print(out,key);
|
|
BIO_printf(out,"\n");
|
|
}
|
|
if (type >= 1)
|
|
{
|
|
BN_CTX *ctx = BN_CTX_new();
|
|
BIGNUM *X,*Y;
|
|
const EC_POINT *pubkey;
|
|
const EC_GROUP *group;
|
|
|
|
if (!ctx)
|
|
{
|
|
GOSTerr(GOST_F_PRINT_GOST_01,ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
BN_CTX_start(ctx);
|
|
X = BN_CTX_get(ctx);
|
|
Y = BN_CTX_get(ctx);
|
|
pubkey = EC_KEY_get0_public_key((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
|
|
group = EC_KEY_get0_group((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
|
|
if (!EC_POINT_get_affine_coordinates_GFp(group,pubkey,X,Y,ctx))
|
|
{
|
|
GOSTerr(GOST_F_PRINT_GOST_01,ERR_R_EC_LIB);
|
|
BN_CTX_free(ctx);
|
|
return 0;
|
|
}
|
|
if (!BIO_indent(out,indent,128)) return 0;
|
|
BIO_printf(out,"Public key:\n");
|
|
if (!BIO_indent(out,indent+3,128)) return 0;
|
|
BIO_printf(out,"X:");
|
|
BN_print(out,X);
|
|
BIO_printf(out,"\n");
|
|
BIO_indent(out,indent+3,128);
|
|
BIO_printf(out,"Y:");
|
|
BN_print(out,Y);
|
|
BIO_printf(out,"\n");
|
|
BN_CTX_end(ctx);
|
|
BN_CTX_free(ctx);
|
|
}
|
|
|
|
param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey)));
|
|
if (!BIO_indent(out,indent,128)) return 0;
|
|
BIO_printf(out,"Parameter set: %s\n",OBJ_nid2ln(param_nid));
|
|
return 1;
|
|
}
|
|
static int param_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_01(out,pkey,indent,pctx,0);
|
|
}
|
|
static int pub_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_01(out,pkey, indent, pctx,1);
|
|
}
|
|
static int priv_print_gost01(BIO *out,const EVP_PKEY *pkey, int indent,
|
|
ASN1_PCTX *pctx)
|
|
{
|
|
return print_gost_01(out,pkey,indent,pctx,2);
|
|
}
|
|
/* ---------------------------------------------------------------------*/
|
|
static int param_missing_gost94(const EVP_PKEY *pk)
|
|
{
|
|
const DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
if (!dsa) return 1;
|
|
if (!dsa->q) return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int param_missing_gost01(const EVP_PKEY *pk)
|
|
{
|
|
const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
if (!ec) return 1;
|
|
if (!EC_KEY_get0_group(ec)) return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int param_copy_gost94(EVP_PKEY *to, const EVP_PKEY *from)
|
|
{
|
|
const DSA *dfrom = EVP_PKEY_get0((EVP_PKEY *)from);
|
|
DSA *dto = EVP_PKEY_get0(to);
|
|
if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to))
|
|
{
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST94,
|
|
GOST_R_INCOMPATIBLE_ALGORITHMS);
|
|
return 0;
|
|
}
|
|
if (!dfrom)
|
|
{
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST94,
|
|
GOST_R_KEY_PARAMETERS_MISSING);
|
|
return 0;
|
|
}
|
|
if (!dto)
|
|
{
|
|
dto = DSA_new();
|
|
EVP_PKEY_assign(to,EVP_PKEY_base_id(from),dto);
|
|
}
|
|
#define COPYBIGNUM(a,b,x) if (a->x) BN_free(a->x); a->x=BN_dup(b->x);
|
|
COPYBIGNUM(dto,dfrom,p)
|
|
COPYBIGNUM(dto,dfrom,q)
|
|
COPYBIGNUM(dto,dfrom,g)
|
|
|
|
if (dto->priv_key)
|
|
gost94_compute_public(dto);
|
|
return 1;
|
|
}
|
|
static int param_copy_gost01(EVP_PKEY *to, const EVP_PKEY *from)
|
|
{
|
|
EC_KEY *eto = EVP_PKEY_get0(to);
|
|
const EC_KEY *efrom = EVP_PKEY_get0((EVP_PKEY *)from);
|
|
if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to))
|
|
{
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST01,
|
|
GOST_R_INCOMPATIBLE_ALGORITHMS);
|
|
return 0;
|
|
}
|
|
if (!efrom)
|
|
{
|
|
GOSTerr(GOST_F_PARAM_COPY_GOST01,
|
|
GOST_R_KEY_PARAMETERS_MISSING);
|
|
return 0;
|
|
}
|
|
if (!eto)
|
|
{
|
|
eto = EC_KEY_new();
|
|
EVP_PKEY_assign(to,EVP_PKEY_base_id(from),eto);
|
|
}
|
|
EC_KEY_set_group(eto,EC_KEY_get0_group(efrom));
|
|
if (EC_KEY_get0_private_key(eto))
|
|
{
|
|
gost2001_compute_public(eto);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int param_cmp_gost94(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
const DSA *da = EVP_PKEY_get0((EVP_PKEY *)a);
|
|
const DSA *db = EVP_PKEY_get0((EVP_PKEY *)b);
|
|
if (!BN_cmp(da->q,db->q)) return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int param_cmp_gost01(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
if (EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)a)))==
|
|
EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)b))))
|
|
{
|
|
return 1;
|
|
}
|
|
return 0;
|
|
|
|
}
|
|
|
|
/* ---------- Public key functions * --------------------------------------*/
|
|
static int pub_decode_gost94(EVP_PKEY *pk, X509_PUBKEY *pub)
|
|
{
|
|
X509_ALGOR *palg = NULL;
|
|
const unsigned char *pubkey_buf = NULL;
|
|
unsigned char *databuf;
|
|
ASN1_OBJECT *palgobj = NULL;
|
|
int pub_len,i,j;
|
|
DSA *dsa;
|
|
ASN1_OCTET_STRING *octet= NULL;
|
|
|
|
if (!X509_PUBKEY_get0_param(&palgobj,&pubkey_buf,&pub_len,
|
|
&palg, pub)) return 0;
|
|
EVP_PKEY_assign(pk,OBJ_obj2nid(palgobj),NULL);
|
|
if (!decode_gost_algor_params(pk,palg)) return 0;
|
|
octet = d2i_ASN1_OCTET_STRING(NULL,&pubkey_buf,pub_len);
|
|
if (!octet)
|
|
{
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST94,ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
databuf = OPENSSL_malloc(octet->length);
|
|
for (i=0,j=octet->length-1;i<octet->length;i++,j--)
|
|
{
|
|
databuf[j]=octet->data[i];
|
|
}
|
|
dsa = EVP_PKEY_get0(pk);
|
|
dsa->pub_key=BN_bin2bn(databuf,octet->length,NULL);
|
|
ASN1_OCTET_STRING_free(octet);
|
|
OPENSSL_free(databuf);
|
|
return 1;
|
|
|
|
}
|
|
|
|
static int pub_encode_gost94(X509_PUBKEY *pub,const EVP_PKEY *pk)
|
|
{
|
|
ASN1_OBJECT *algobj = NULL;
|
|
ASN1_OCTET_STRING *octet = NULL;
|
|
void *pval = NULL;
|
|
unsigned char *buf=NULL,*databuf,*sptr;
|
|
int i,j,data_len,ret=0;
|
|
|
|
int ptype = V_ASN1_UNDEF;
|
|
DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
|
|
if (pk->save_parameters)
|
|
{
|
|
ASN1_STRING *params = encode_gost_algor_params(pk);
|
|
pval = params;
|
|
ptype = V_ASN1_SEQUENCE;
|
|
}
|
|
data_len = BN_num_bytes(dsa->pub_key);
|
|
databuf = OPENSSL_malloc(data_len);
|
|
BN_bn2bin(dsa->pub_key,databuf);
|
|
octet = ASN1_OCTET_STRING_new();
|
|
ASN1_STRING_set(octet,NULL,data_len);
|
|
sptr = ASN1_STRING_data(octet);
|
|
for (i=0,j=data_len-1; i< data_len;i++,j--)
|
|
{
|
|
sptr[i]=databuf[j];
|
|
}
|
|
OPENSSL_free(databuf);
|
|
ret = i2d_ASN1_OCTET_STRING(octet,&buf);
|
|
ASN1_BIT_STRING_free(octet);
|
|
if (ret <0) return 0;
|
|
return X509_PUBKEY_set0_param(pub,algobj,ptype,pval,buf,ret);
|
|
}
|
|
|
|
static int pub_decode_gost01(EVP_PKEY *pk,X509_PUBKEY *pub)
|
|
{
|
|
X509_ALGOR *palg = NULL;
|
|
const unsigned char *pubkey_buf = NULL;
|
|
unsigned char *databuf;
|
|
ASN1_OBJECT *palgobj = NULL;
|
|
int pub_len,i,j;
|
|
EC_POINT *pub_key;
|
|
BIGNUM *X,*Y;
|
|
ASN1_OCTET_STRING *octet= NULL;
|
|
int len;
|
|
const EC_GROUP *group;
|
|
|
|
if (!X509_PUBKEY_get0_param(&palgobj,&pubkey_buf,&pub_len,
|
|
&palg, pub)) return 0;
|
|
EVP_PKEY_assign(pk,OBJ_obj2nid(palgobj),NULL);
|
|
if (!decode_gost_algor_params(pk,palg)) return 0;
|
|
group = EC_KEY_get0_group(EVP_PKEY_get0(pk));
|
|
octet = d2i_ASN1_OCTET_STRING(NULL,&pubkey_buf,pub_len);
|
|
if (!octet)
|
|
{
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST01,ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
databuf = OPENSSL_malloc(octet->length);
|
|
for (i=0,j=octet->length-1;i<octet->length;i++,j--)
|
|
{
|
|
databuf[j]=octet->data[i];
|
|
}
|
|
len=octet->length/2;
|
|
ASN1_OCTET_STRING_free(octet);
|
|
|
|
Y= getbnfrombuf(databuf,len);
|
|
X= getbnfrombuf(databuf+len,len);
|
|
OPENSSL_free(databuf);
|
|
pub_key = EC_POINT_new(group);
|
|
if (!EC_POINT_set_affine_coordinates_GFp(group
|
|
,pub_key,X,Y,NULL))
|
|
{
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST01,
|
|
ERR_R_EC_LIB);
|
|
EC_POINT_free(pub_key);
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
return 0;
|
|
}
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
if (!EC_KEY_set_public_key(EVP_PKEY_get0(pk),pub_key))
|
|
{
|
|
GOSTerr(GOST_F_PUB_DECODE_GOST01,
|
|
ERR_R_EC_LIB);
|
|
EC_POINT_free(pub_key);
|
|
return 0;
|
|
}
|
|
EC_POINT_free(pub_key);
|
|
return 1;
|
|
|
|
}
|
|
|
|
static int pub_encode_gost01(X509_PUBKEY *pub,const EVP_PKEY *pk)
|
|
{
|
|
ASN1_OBJECT *algobj = NULL;
|
|
ASN1_OCTET_STRING *octet = NULL;
|
|
void *pval = NULL;
|
|
unsigned char *buf=NULL,*databuf,*sptr;
|
|
int i,j,data_len,ret=0;
|
|
const EC_POINT *pub_key;
|
|
BIGNUM *X,*Y,*order;
|
|
const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
|
|
int ptype = V_ASN1_UNDEF;
|
|
|
|
algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
|
|
if (pk->save_parameters)
|
|
{
|
|
ASN1_STRING *params = encode_gost_algor_params(pk);
|
|
pval = params;
|
|
ptype = V_ASN1_SEQUENCE;
|
|
}
|
|
order = BN_new();
|
|
EC_GROUP_get_order(EC_KEY_get0_group(ec),order,NULL);
|
|
pub_key=EC_KEY_get0_public_key(ec);
|
|
if (!pub_key)
|
|
{
|
|
GOSTerr(GOST_F_PUB_ENCODE_GOST01,
|
|
GOST_R_PUBLIC_KEY_UNDEFINED);
|
|
return 0;
|
|
}
|
|
X=BN_new();
|
|
Y=BN_new();
|
|
EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(ec),
|
|
pub_key,X,Y,NULL);
|
|
data_len = 2*BN_num_bytes(order);
|
|
BN_free(order);
|
|
databuf = OPENSSL_malloc(data_len);
|
|
memset(databuf,0,data_len);
|
|
|
|
store_bignum(X,databuf+data_len/2,data_len/2);
|
|
store_bignum(Y,databuf,data_len/2);
|
|
|
|
BN_free(X);
|
|
BN_free(Y);
|
|
octet = ASN1_OCTET_STRING_new();
|
|
ASN1_STRING_set(octet,NULL,data_len);
|
|
sptr=ASN1_STRING_data(octet);
|
|
for (i=0,j=data_len-1;i<data_len;i++,j--)
|
|
{
|
|
sptr[i]=databuf[j];
|
|
}
|
|
OPENSSL_free(databuf);
|
|
ret = i2d_ASN1_OCTET_STRING(octet,&buf);
|
|
ASN1_BIT_STRING_free(octet);
|
|
if (ret <0) return 0;
|
|
return X509_PUBKEY_set0_param(pub,algobj,ptype,pval,buf,ret);
|
|
}
|
|
|
|
static int pub_cmp_gost94(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
const DSA *da = EVP_PKEY_get0((EVP_PKEY *)a);
|
|
const DSA *db = EVP_PKEY_get0((EVP_PKEY *)b);
|
|
if (da && db && da->pub_key && db->pub_key
|
|
&& !BN_cmp(da->pub_key,db->pub_key))
|
|
{
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int pub_cmp_gost01(const EVP_PKEY *a,const EVP_PKEY *b)
|
|
{
|
|
const EC_KEY *ea = EVP_PKEY_get0((EVP_PKEY *)a);
|
|
const EC_KEY *eb = EVP_PKEY_get0((EVP_PKEY *)b);
|
|
const EC_POINT *ka,*kb;
|
|
int ret=0;
|
|
if (!ea || !eb) return 0;
|
|
ka = EC_KEY_get0_public_key(ea);
|
|
kb = EC_KEY_get0_public_key(eb);
|
|
if (!ka || !kb) return 0;
|
|
ret = (0==EC_POINT_cmp(EC_KEY_get0_group(ea),ka,kb,NULL)) ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
|
|
static int pkey_size_gost(const EVP_PKEY *pk)
|
|
{
|
|
return 64;
|
|
}
|
|
|
|
static int pkey_bits_gost(const EVP_PKEY *pk)
|
|
{
|
|
return 256;
|
|
}
|
|
/*------------------------ ASN1 METHOD for GOST MAC -------------------*/
|
|
static void mackey_free_gost(EVP_PKEY *pk)
|
|
{
|
|
if (pk->pkey.ptr) {
|
|
OPENSSL_free(pk->pkey.ptr);
|
|
}
|
|
}
|
|
static int mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
|
|
{
|
|
switch (op)
|
|
{
|
|
case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
|
|
*(int *)arg2 = NID_id_Gost28147_89_MAC;
|
|
return 2;
|
|
}
|
|
return -2;
|
|
}
|
|
|
|
static int gost94_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
|
|
{
|
|
int nid=gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
|
|
return i2d_ASN1_OBJECT(OBJ_nid2obj(nid),pder);
|
|
}
|
|
static int gost2001_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
|
|
{
|
|
int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey)));
|
|
return i2d_ASN1_OBJECT(OBJ_nid2obj(nid),pder);
|
|
}
|
|
|
|
static int gost94_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
|
|
{
|
|
ASN1_OBJECT *obj=NULL;
|
|
DSA *dsa = EVP_PKEY_get0(pkey);
|
|
int nid;
|
|
if (d2i_ASN1_OBJECT(&obj,pder,derlen)==NULL) {
|
|
return 0;
|
|
}
|
|
nid = OBJ_obj2nid(obj);
|
|
ASN1_OBJECT_free(obj);
|
|
if (!dsa)
|
|
{
|
|
dsa=DSA_new();
|
|
if (!EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa)) return 0;
|
|
}
|
|
if (!fill_GOST94_params(dsa,nid)) return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int gost2001_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen) {
|
|
ASN1_OBJECT *obj=NULL;
|
|
int nid;
|
|
EC_KEY *ec = EVP_PKEY_get0(pkey);
|
|
if (d2i_ASN1_OBJECT(&obj,pder,derlen)==NULL) {
|
|
return 0;
|
|
}
|
|
nid = OBJ_obj2nid(obj);
|
|
ASN1_OBJECT_free(obj);
|
|
if (!ec)
|
|
{
|
|
ec = EC_KEY_new();
|
|
if (!EVP_PKEY_assign(pkey,NID_id_GostR3410_2001,ec)) return 0;
|
|
}
|
|
if (!fill_GOST2001_params(ec, nid)) return 0;
|
|
return 1;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------*/
|
|
int register_ameth_gost (int nid, EVP_PKEY_ASN1_METHOD **ameth, const char* pemstr, const char* info)
|
|
{
|
|
*ameth = EVP_PKEY_asn1_new(nid,
|
|
ASN1_PKEY_SIGPARAM_NULL, pemstr, info);
|
|
if (!*ameth) return 0;
|
|
switch (nid)
|
|
{
|
|
case NID_id_GostR3410_94:
|
|
EVP_PKEY_asn1_set_free (*ameth, pkey_free_gost94);
|
|
EVP_PKEY_asn1_set_private (*ameth,
|
|
priv_decode_gost, priv_encode_gost,
|
|
priv_print_gost94);
|
|
|
|
EVP_PKEY_asn1_set_param (*ameth,
|
|
gost94_param_decode, gost94_param_encode,
|
|
param_missing_gost94, param_copy_gost94,
|
|
param_cmp_gost94,param_print_gost94 );
|
|
EVP_PKEY_asn1_set_public (*ameth,
|
|
pub_decode_gost94, pub_encode_gost94,
|
|
pub_cmp_gost94, pub_print_gost94,
|
|
pkey_size_gost, pkey_bits_gost);
|
|
|
|
EVP_PKEY_asn1_set_ctrl (*ameth, pkey_ctrl_gost);
|
|
break;
|
|
case NID_id_GostR3410_2001:
|
|
EVP_PKEY_asn1_set_free (*ameth, pkey_free_gost01);
|
|
EVP_PKEY_asn1_set_private (*ameth,
|
|
priv_decode_gost, priv_encode_gost,
|
|
priv_print_gost01);
|
|
|
|
EVP_PKEY_asn1_set_param (*ameth,
|
|
gost2001_param_decode, gost2001_param_encode,
|
|
param_missing_gost01, param_copy_gost01,
|
|
param_cmp_gost01, param_print_gost01);
|
|
EVP_PKEY_asn1_set_public (*ameth,
|
|
pub_decode_gost01, pub_encode_gost01,
|
|
pub_cmp_gost01, pub_print_gost01,
|
|
pkey_size_gost, pkey_bits_gost);
|
|
|
|
EVP_PKEY_asn1_set_ctrl (*ameth, pkey_ctrl_gost);
|
|
break;
|
|
case NID_id_Gost28147_89_MAC:
|
|
EVP_PKEY_asn1_set_free(*ameth, mackey_free_gost);
|
|
EVP_PKEY_asn1_set_ctrl(*ameth,mac_ctrl_gost);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|