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