1 /**********************************************************************
3 * Copyright (c) 2005-2006 Cryptocom LTD *
4 * This file is distributed under the same license as OpenSSL *
6 * Implementation of control commands for GOST engine *
7 * OpenSSL 0.9.9 libraries required *
8 **********************************************************************/
11 #include <openssl/crypto.h>
12 #include <openssl/err.h>
13 #include <openssl/engine.h>
14 #include <openssl/buffer.h>
17 static char *gost_params[GOST_PARAM_MAX+1]={NULL};
18 static const char *gost_envnames[]={"CRYPT_PARAMS"};
19 const ENGINE_CMD_DEFN gost_cmds[]=
23 "Type of random number generator to use",
24 ENGINE_CMD_FLAG_STRING
26 { GOST_CTRL_RNG_PARAMS,
28 "Parameter for random number generator",
29 ENGINE_CMD_FLAG_STRING
31 */ { GOST_CTRL_CRYPT_PARAMS,
33 "OID of default GOST 28147-89 parameters",
34 ENGINE_CMD_FLAG_STRING
39 void gost_param_free()
42 for (i=0;i<=GOST_PARAM_MAX;i++)
43 if (gost_params[i]!=NULL)
45 OPENSSL_free(gost_params[i]);
51 int gost_control_func(ENGINE *e,int cmd,long i, void *p, void (*f)(void))
53 int param = cmd-ENGINE_CMD_BASE;
55 if (param <0 || param >GOST_PARAM_MAX) return -1;
56 ret=gost_set_default_param(param,p);
60 const char *get_gost_engine_param(int param)
63 if (param <0 || param >GOST_PARAM_MAX) return NULL;
64 if (gost_params[param]!=NULL)
66 return gost_params[param];
68 tmp = getenv(gost_envnames[param]);
71 if (gost_params[param]) OPENSSL_free(gost_params[param]);
72 gost_params[param] = BUF_strdup(tmp);
73 return gost_params[param];
78 int gost_set_default_param(int param, const char *value)
81 if (param <0 || param >GOST_PARAM_MAX) return 0;
82 tmp = getenv(gost_envnames[param]);
83 /* if there is value in the environment, use it, else -passed string * */
85 if (gost_params[param]) OPENSSL_free(gost_params[param]);
86 gost_params[param] = BUF_strdup(tmp);