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[] =
19 { "CRYPT_PARAMS", "GOST_PBE_HMAC", "GOST_PK_FORMAT" };
21 void gost_param_free()
25 for (i = 0; i <= GOST_PARAM_MAX; i++) {
26 OPENSSL_free(gost_params[i]);
27 gost_params[i] = NULL;
32 int gost_control_func(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
34 int param = cmd - ENGINE_CMD_BASE;
36 if (param < 0 || param > GOST_PARAM_MAX) {
39 ret = gost_set_default_param(param, p);
43 const char *get_gost_engine_param(int param)
46 if (param < 0 || param >= GOST_PARAM_MAX)
48 if (gost_params[param] != NULL) {
49 return gost_params[param];
51 tmp = getenv(gost_envnames[param]);
53 OPENSSL_free(gost_params[param]);
54 gost_params[param] = BUF_strdup(tmp);
55 return gost_params[param];
60 int gost_set_default_param(int param, const char *value)
63 if (param < 0 || param >= GOST_PARAM_MAX)
65 tmp = getenv(gost_envnames[param]);
68 * if there is value in the environment, use it, else -passed string *
73 OPENSSL_free(gost_params[param]);
74 gost_params[param] = BUF_strdup(tmp);