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| 1 /********************************************************************** |
| 2 * gost_ctl.c * |
| 3 * Copyright (c) 2005-2006 Cryptocom LTD * |
| 4 * This file is distributed under the same license as OpenSSL * |
| 5 * * |
| 6 * Implementation of control commands for GOST engine * |
| 7 * OpenSSL 0.9.9 libraries required * |
| 8 **********************************************************************/
|
| 9 #include <stdlib.h> |
| 10 #include <string.h> |
| 11 #include <openssl/crypto.h> |
| 12 #include <openssl/err.h> |
| 13 #include <openssl/engine.h> |
| 14 #include <openssl/buffer.h> |
| 15 #include "gost_lcl.h" |
| 16 |
| 17 static char *gost_params[GOST_PARAM_MAX+1]={NULL}; |
| 18 static const char *gost_envnames[]={"CRYPT_PARAMS"}; |
| 19 const ENGINE_CMD_DEFN gost_cmds[]= |
| 20 { |
| 21 /* { GOST_CTRL_RNG, |
| 22 "RNG", |
| 23 "Type of random number generator to use", |
| 24 ENGINE_CMD_FLAG_STRING |
| 25 }, |
| 26 { GOST_CTRL_RNG_PARAMS, |
| 27 "RNG_PARAMS", |
| 28 "Parameter for random number generator", |
| 29 ENGINE_CMD_FLAG_STRING |
| 30 }, |
| 31 */ { GOST_CTRL_CRYPT_PARAMS, |
| 32 "CRYPT_PARAMS", |
| 33 "OID of default GOST 28147-89 parameters", |
| 34 ENGINE_CMD_FLAG_STRING |
| 35 }, |
| 36 {0,NULL,NULL,0} |
| 37 }; |
| 38 |
| 39 void gost_param_free() |
| 40 { |
| 41 int i; |
| 42 for (i=0;i<=GOST_PARAM_MAX;i++) |
| 43 if (gost_params[i]!=NULL) |
| 44 { |
| 45 OPENSSL_free(gost_params[i]); |
| 46 gost_params[i]=NULL; |
| 47 } |
| 48 |
| 49 } |
| 50 |
| 51 int gost_control_func(ENGINE *e,int cmd,long i, void *p, void (*f)(void)) |
| 52 { |
| 53 int param = cmd-ENGINE_CMD_BASE; |
| 54 int ret=0; |
| 55 if (param <0 || param >GOST_PARAM_MAX) return -1; |
| 56 ret=gost_set_default_param(param,p); |
| 57 return ret; |
| 58 } |
| 59 |
| 60 const char *get_gost_engine_param(int param) |
| 61 { |
| 62 char *tmp; |
| 63 if (param <0 || param >GOST_PARAM_MAX) return NULL; |
| 64 if (gost_params[param]!=NULL) |
| 65 { |
| 66 return gost_params[param]; |
| 67 } |
| 68 tmp = getenv(gost_envnames[param]); |
| 69 if (tmp) |
| 70 { |
| 71 if (gost_params[param]) OPENSSL_free(gost_params[param]); |
| 72 gost_params[param] = BUF_strdup(tmp); |
| 73 return gost_params[param]; |
| 74 } |
| 75 return NULL; |
| 76 } |
| 77 |
| 78 int gost_set_default_param(int param, const char *value) |
| 79 { |
| 80 const char *tmp; |
| 81 if (param <0 || param >GOST_PARAM_MAX) return 0; |
| 82 tmp = getenv(gost_envnames[param]); |
| 83 /* if there is value in the environment, use it, else -passed string * *
/ |
| 84 if (!tmp) tmp=value; |
| 85 if (gost_params[param]) OPENSSL_free(gost_params[param]); |
| 86 gost_params[param] = BUF_strdup(tmp); |
| 87 |
| 88 return 1; |
| 89 } |
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