957c7c0e88
Multiple copies of the ENGINE will cause problems when it is cleaned up as the methods are stored in static structures which will be overwritten and freed up more than once. Set static methods to NULL when the ENGINE is freed so it can be reloaded.
283 lines
6.7 KiB
C
283 lines
6.7 KiB
C
/**********************************************************************
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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 = "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[] =
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{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[] =
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{NID_id_GostR3410_94,
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NID_id_GostR3410_2001, NID_id_Gost28147_89_MAC, 0};
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static EVP_PKEY_METHOD *pmeth_GostR3410_94 = NULL,
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*pmeth_GostR3410_2001 = NULL,
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*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,
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*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)) return 0;
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if (!ENGINE_set_id(e, engine_gost_id))
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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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goto end;
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}
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if (!register_ameth_gost(NID_id_GostR3410_94, &ameth_GostR3410_94, "GOST94", "GOST R 34.10-94")) goto end;
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if (!register_ameth_gost(NID_id_GostR3410_2001, &ameth_GostR3410_2001, "GOST2001", "GOST R 34.10-2001")) 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")) goto end;
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if (!register_pmeth_gost(NID_id_GostR3410_94, &pmeth_GostR3410_94, 0)) goto end;
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if (!register_pmeth_gost(NID_id_GostR3410_2001, &pmeth_GostR3410_2001, 0)) goto end;
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if (!register_pmeth_gost(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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{
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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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#ifndef OPENSSL_NO_DYNAMIC_ENGINE
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IMPLEMENT_DYNAMIC_BIND_FN(bind_gost)
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IMPLEMENT_DYNAMIC_CHECK_FN()
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#endif /* ndef OPENSSL_NO_DYNAMIC_ENGINE */
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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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{
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*nids = gost_digest_nids;
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return 2;
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}
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/*printf("Digest no %d requested\n",nid);*/
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if(nid == NID_id_GostR3411_94)
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{
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*digest = &digest_gost;
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}
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else if (nid == NID_id_Gost28147_89_MAC)
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{
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*digest = &imit_gost_cpa;
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}
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else
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{
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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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{
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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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{
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*cipher = &cipher_gost;
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}
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else if (nid == NID_gost89_cnt)
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{
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*cipher = &cipher_gost_cpacnt;
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}
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else
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{
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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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{
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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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{
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case NID_id_GostR3410_94: *pmeth = pmeth_GostR3410_94; return 1;
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case NID_id_GostR3410_2001: *pmeth = pmeth_GostR3410_2001; return 1;
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case NID_id_Gost28147_89_MAC: *pmeth = pmeth_Gost28147_MAC; 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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{
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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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{
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case NID_id_GostR3410_94: *ameth = ameth_GostR3410_94; return 1;
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case NID_id_GostR3410_2001: *ameth = ameth_GostR3410_2001; return 1;
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case NID_id_Gost28147_89_MAC: *ameth = ameth_Gost28147_MAC; 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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{
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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) 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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#endif
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