mirror of
https://github.com/openssl/openssl.git
synced 2024-12-27 06:21:43 +08:00
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/*-
|
|
* Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
/*
|
|
* Example showing how to generate DSA params using
|
|
* FIPS 186-4 DSA FFC parameter generation.
|
|
*/
|
|
|
|
#include <openssl/evp.h>
|
|
#include "dsa.inc"
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int ret = EXIT_FAILURE;
|
|
OSSL_LIB_CTX *libctx = NULL;
|
|
const char *propq = NULL;
|
|
EVP_PKEY_CTX *ctx = NULL;
|
|
EVP_PKEY *dsaparamkey = NULL;
|
|
OSSL_PARAM params[7];
|
|
unsigned int pbits = 2048;
|
|
unsigned int qbits = 256;
|
|
int gindex = 42;
|
|
|
|
ctx = EVP_PKEY_CTX_new_from_name(libctx, "DSA", propq);
|
|
if (ctx == NULL)
|
|
goto cleanup;
|
|
|
|
/*
|
|
* Demonstrate how to set optional DSA fields as params.
|
|
* See doc/man7/EVP_PKEY-FFC.pod and doc/man7/EVP_PKEY-DSA.pod
|
|
* for more information.
|
|
*/
|
|
params[0] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_TYPE,
|
|
"fips186_4", 0);
|
|
params[1] = OSSL_PARAM_construct_uint(OSSL_PKEY_PARAM_FFC_PBITS, &pbits);
|
|
params[2] = OSSL_PARAM_construct_uint(OSSL_PKEY_PARAM_FFC_QBITS, &qbits);
|
|
params[3] = OSSL_PARAM_construct_int(OSSL_PKEY_PARAM_FFC_GINDEX, &gindex);
|
|
params[4] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST,
|
|
"SHA384", 0);
|
|
params[5] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST_PROPS,
|
|
"provider=default", 0);
|
|
params[6] = OSSL_PARAM_construct_end();
|
|
|
|
/* Generate a dsa param key using optional params */
|
|
if (EVP_PKEY_paramgen_init(ctx) <= 0
|
|
|| EVP_PKEY_CTX_set_params(ctx, params) <= 0
|
|
|| EVP_PKEY_paramgen(ctx, &dsaparamkey) <= 0) {
|
|
fprintf(stderr, "DSA paramgen failed\n");
|
|
goto cleanup;
|
|
}
|
|
|
|
if (!dsa_print_key(dsaparamkey, 0, libctx, propq))
|
|
goto cleanup;
|
|
|
|
ret = EXIT_SUCCESS;
|
|
cleanup:
|
|
EVP_PKEY_free(dsaparamkey);
|
|
EVP_PKEY_CTX_free(ctx);
|
|
return ret;
|
|
}
|