/********************************************************************** * gost_ctl.c * * Copyright (c) 2005-2006 Cryptocom LTD * * This file is distributed under the same license as OpenSSL * * * * Implementation of control commands for GOST engine * * OpenSSL 0.9.9 libraries required * **********************************************************************/ #include <stdlib.h> #include <string.h> #include <openssl/crypto.h> #include <openssl/err.h> #include <openssl/engine.h> #include <openssl/buffer.h> #include "gost_lcl.h" static char *gost_params[GOST_PARAM_MAX+1]={NULL}; static const char *gost_envnames[]={"CRYPT_PARAMS"}; const ENGINE_CMD_DEFN gost_cmds[]= { /* { GOST_CTRL_RNG, "RNG", "Type of random number generator to use", ENGINE_CMD_FLAG_STRING }, { GOST_CTRL_RNG_PARAMS, "RNG_PARAMS", "Parameter for random number generator", ENGINE_CMD_FLAG_STRING }, */ { GOST_CTRL_CRYPT_PARAMS, "CRYPT_PARAMS", "OID of default GOST 28147-89 parameters", ENGINE_CMD_FLAG_STRING }, {0,NULL,NULL,0} }; void gost_param_free() { int i; for (i=0;i<=GOST_PARAM_MAX;i++) if (gost_params[i]!=NULL) { OPENSSL_free(gost_params[i]); gost_params[i]=NULL; } } int gost_control_func(ENGINE *e,int cmd,long i, void *p, void (*f)(void)) { int param = cmd-ENGINE_CMD_BASE; int ret=0; if (param <0 || param >GOST_PARAM_MAX) return -1; ret=gost_set_default_param(param,p); return ret; } const char *get_gost_engine_param(int param) { char *tmp; if (param <0 || param >GOST_PARAM_MAX) return NULL; if (gost_params[param]!=NULL) { return gost_params[param]; } tmp = getenv(gost_envnames[param]); if (tmp) { if (gost_params[param]) OPENSSL_free(gost_params[param]); gost_params[param] = BUF_strdup(tmp); return gost_params[param]; } return NULL; } int gost_set_default_param(int param, const char *value) { const char *tmp; if (param <0 || param >GOST_PARAM_MAX) return 0; tmp = getenv(gost_envnames[param]); /* if there is value in the environment, use it, else -passed string * */ if (!tmp) tmp=value; if (gost_params[param]) OPENSSL_free(gost_params[param]); gost_params[param] = BUF_strdup(tmp); return 1; }