| /********************************************************************** |
| * 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; |
| } |