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openssl/engines/ccgost/gost_eng.c

+/**********************************************************************
+ *                          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();
+        return 1;
+        }
+
+static int bind_gost (ENGINE *e,const char *id) 
+        {
+        int ret = 0;
+        if (id && strcmp(id, engine_gost_id)) return 0;
+
+        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 =engine_gost();
+        if (!toadd) return;
+        ENGINE_add(toadd);
+        ENGINE_free(toadd);
+        ERR_clear_error();
+        }
+#endif  
+