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