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93 lines
2.6 KiB
93 lines
2.6 KiB
/********************************************************************** |
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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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/*- { 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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{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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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) |
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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) |
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return NULL; |
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if (gost_params[param] != NULL) { |
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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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if (gost_params[param]) |
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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) |
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return 0; |
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tmp = getenv(gost_envnames[param]); |
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/* |
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* if there is value in the environment, use it, else -passed string * |
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*/ |
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if (!tmp) |
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tmp = value; |
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if (gost_params[param]) |
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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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