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/**********************************************************************
* gost_eng.c *
* Copyright (c) 2005-2006 Cryptocom LTD *
* This file is distributed under the same license as OpenSSL *
* *
* Main file of GOST engine *
* for OpenSSL *
* Requires OpenSSL 0.9.9 for compilation *
**********************************************************************/
#include <string.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/engine.h>
#include <openssl/obj_mac.h>
#include "e_gost_err.h"
#include "gost_lcl.h"
static const char *engine_gost_id = "gost";
static const char *engine_gost_name = "Reference implementation of GOST engine";
/* Symmetric cipher and digest function registrar */
static int gost_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
const int **nids, int nid);
static int gost_digests(ENGINE *e, const EVP_MD **digest,
const int **nids, int ind);
static int gost_pkey_meths (ENGINE *e, EVP_PKEY_METHOD **pmeth,
const int **nids, int nid);
static int gost_pkey_asn1_meths (ENGINE *e, EVP_PKEY_ASN1_METHOD **ameth,
const int **nids, int nid);
static int gost_cipher_nids[] =
{NID_id_Gost28147_89, NID_gost89_cnt,0};
static int gost_digest_nids[] =
{NID_id_GostR3411_94,NID_id_Gost28147_89_MAC, 0};
static int gost_pkey_meth_nids[] =
{NID_id_GostR3410_94,
NID_id_GostR3410_2001, NID_id_Gost28147_89_MAC, 0};
static EVP_PKEY_METHOD *pmeth_GostR3410_94 = NULL,
*pmeth_GostR3410_2001 = NULL,
*pmeth_Gost28147_MAC = NULL;
static EVP_PKEY_ASN1_METHOD *ameth_GostR3410_94 = NULL,
*ameth_GostR3410_2001 = NULL,
*ameth_Gost28147_MAC = NULL;
static int gost_engine_init(ENGINE *e)
{
return 1;
}
static int gost_engine_finish(ENGINE *e)
{
return 1;
}
static int gost_engine_destroy(ENGINE *e)
{
gost_param_free();
pmeth_GostR3410_94 = NULL;
pmeth_GostR3410_2001 = NULL;
pmeth_Gost28147_MAC = NULL;
ameth_GostR3410_94 = NULL;
ameth_GostR3410_2001 = NULL;
ameth_Gost28147_MAC = NULL;
return 1;
}
static int bind_gost (ENGINE *e,const char *id)
{
int ret = 0;
if (id && strcmp(id, engine_gost_id)) return 0;
if (ameth_GostR3410_94)
{
printf("GOST engine already loaded\n");
goto end;
}
if (!ENGINE_set_id(e, engine_gost_id))
{
printf("ENGINE_set_id failed\n");
goto end;
}
if (!ENGINE_set_name(e, engine_gost_name))
{
printf("ENGINE_set_name failed\n");
goto end;
}
if (!ENGINE_set_digests(e, gost_digests))
{
printf("ENGINE_set_digests failed\n");
goto end;
}
if (! ENGINE_set_ciphers(e, gost_ciphers))
{
printf("ENGINE_set_ciphers failed\n");
goto end;
}
if (! ENGINE_set_pkey_meths(e, gost_pkey_meths))
{
printf("ENGINE_set_pkey_meths failed\n");
goto end;
}
if (! ENGINE_set_pkey_asn1_meths(e, gost_pkey_asn1_meths))
{
printf("ENGINE_set_pkey_asn1_meths failed\n");
goto end;
}
/* Control function and commands */
if (!ENGINE_set_cmd_defns(e,gost_cmds))
{
fprintf(stderr,"ENGINE_set_cmd_defns failed\n");
goto end;
}
if (!ENGINE_set_ctrl_function(e,gost_control_func))
{
fprintf(stderr,"ENGINE_set_ctrl_func failed\n");
goto end;
}
if ( ! ENGINE_set_destroy_function(e, gost_engine_destroy)
|| ! ENGINE_set_init_function(e,gost_engine_init)
|| ! ENGINE_set_finish_function(e,gost_engine_finish))
{
goto end;
}
if (!register_ameth_gost(NID_id_GostR3410_94, &ameth_GostR3410_94, "GOST94", "GOST R 34.10-94")) goto end;
if (!register_ameth_gost(NID_id_GostR3410_2001, &ameth_GostR3410_2001, "GOST2001", "GOST R 34.10-2001")) goto end;
if (!register_ameth_gost(NID_id_Gost28147_89_MAC, &ameth_Gost28147_MAC,
"GOST-MAC", "GOST 28147-89 MAC")) goto end;
if (!register_pmeth_gost(NID_id_GostR3410_94, &pmeth_GostR3410_94, 0)) goto end;
if (!register_pmeth_gost(NID_id_GostR3410_2001, &pmeth_GostR3410_2001, 0)) goto end;
if (!register_pmeth_gost(NID_id_Gost28147_89_MAC, &pmeth_Gost28147_MAC, 0))
goto end;
if ( ! ENGINE_register_ciphers(e)
|| ! ENGINE_register_digests(e)
|| ! ENGINE_register_pkey_meths(e)
/* These two actually should go in LIST_ADD command */
|| ! EVP_add_cipher(&cipher_gost)
|| ! EVP_add_cipher(&cipher_gost_cpacnt)
|| ! EVP_add_digest(&digest_gost)
|| ! EVP_add_digest(&imit_gost_cpa)
)
{
goto end;
}
ERR_load_GOST_strings();
ret = 1;
end:
return ret;
}
#ifndef OPENSSL_NO_DYNAMIC_ENGINE
IMPLEMENT_DYNAMIC_BIND_FN(bind_gost)
IMPLEMENT_DYNAMIC_CHECK_FN()
#endif /* ndef OPENSSL_NO_DYNAMIC_ENGINE */
static int gost_digests(ENGINE *e, const EVP_MD **digest,
const int **nids, int nid)
{
int ok =1 ;
if (!digest)
{
*nids = gost_digest_nids;
return 2;
}
/*printf("Digest no %d requested\n",nid);*/
if(nid == NID_id_GostR3411_94)
{
*digest = &digest_gost;
}
else if (nid == NID_id_Gost28147_89_MAC)
{
*digest = &imit_gost_cpa;
}
else
{
ok =0;
*digest = NULL;
}
return ok;
}
static int gost_ciphers (ENGINE *e,const EVP_CIPHER **cipher,
const int **nids, int nid)
{
int ok = 1;
if (!cipher)
{
*nids = gost_cipher_nids;
return 2; /* two ciphers are supported */
}
if(nid == NID_id_Gost28147_89)
{
*cipher = &cipher_gost;
}
else if (nid == NID_gost89_cnt)
{
*cipher = &cipher_gost_cpacnt;
}
else
{
ok = 0;
*cipher = NULL;
}
return ok;
}
static int gost_pkey_meths (ENGINE *e, EVP_PKEY_METHOD **pmeth,
const int **nids, int nid)
{
if (!pmeth)
{
*nids = gost_pkey_meth_nids;
return 3;
}
switch (nid)
{
case NID_id_GostR3410_94: *pmeth = pmeth_GostR3410_94; return 1;
case NID_id_GostR3410_2001: *pmeth = pmeth_GostR3410_2001; return 1;
case NID_id_Gost28147_89_MAC: *pmeth = pmeth_Gost28147_MAC; return 1;
default:;
}
*pmeth = NULL;
return 0;
}
static int gost_pkey_asn1_meths (ENGINE *e, EVP_PKEY_ASN1_METHOD **ameth,
const int **nids, int nid)
{
if (!ameth)
{
*nids = gost_pkey_meth_nids;
return 3;
}
switch (nid)
{
case NID_id_GostR3410_94: *ameth = ameth_GostR3410_94; return 1;
case NID_id_GostR3410_2001: *ameth = ameth_GostR3410_2001; return 1;
case NID_id_Gost28147_89_MAC: *ameth = ameth_Gost28147_MAC; return 1;
default:;
}
*ameth = NULL;
return 0;
}
#ifdef OPENSSL_NO_DYNAMIC_ENGINE
static ENGINE *engine_gost(void)
{
ENGINE *ret = ENGINE_new();
if (!ret)
return NULL;
if (!bind_gost(ret,engine_gost_id))
{
ENGINE_free(ret);
return NULL;
}
return ret;
}
void ENGINE_load_gost(void)
{
ENGINE *toadd;
if (pmeth_GostR3410_94)
return;
toadd = engine_gost();
if (!toadd) return;
ENGINE_add(toadd);
ENGINE_free(toadd);
ERR_clear_error();
}
#endif
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