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" };
20 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},
38 void gost_param_free()
41 for (i = 0; i <= GOST_PARAM_MAX; i++)
42 if (gost_params[i] != NULL) {
43 OPENSSL_free(gost_params[i]);
44 gost_params[i] = NULL;
49 int gost_control_func(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
51 int param = cmd - ENGINE_CMD_BASE;
53 if (param < 0 || param > GOST_PARAM_MAX)
55 ret = gost_set_default_param(param, p);
59 const char *get_gost_engine_param(int param)
62 if (param < 0 || param > GOST_PARAM_MAX)
64 if (gost_params[param] != NULL) {
65 return gost_params[param];
67 tmp = getenv(gost_envnames[param]);
69 if (gost_params[param])
70 OPENSSL_free(gost_params[param]);
71 gost_params[param] = BUF_strdup(tmp);
72 return gost_params[param];
77 int gost_set_default_param(int param, const char *value)
80 if (param < 0 || param > GOST_PARAM_MAX)
82 tmp = getenv(gost_envnames[param]);
84 * if there is value in the environment, use it, else -passed string *
88 if (gost_params[param])
89 OPENSSL_free(gost_params[param]);
90 gost_params[param] = BUF_strdup(tmp);