mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*-
|
|
* Copyright 2022 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 an DSA key pair.
|
|
*/
|
|
|
|
#include <openssl/evp.h>
|
|
#include "dsa.inc"
|
|
|
|
/*
|
|
* Generate dsa params using default values.
|
|
* See the EVP_PKEY_DSA_param_fromdata demo if you need
|
|
* to load DSA params from raw values.
|
|
* See the EVP_PKEY_DSA_paramgen demo if you need to
|
|
* use non default parameters.
|
|
*/
|
|
EVP_PKEY *dsa_genparams(OSSL_LIB_CTX *libctx, const char *propq)
|
|
{
|
|
EVP_PKEY *dsaparamkey = NULL;
|
|
EVP_PKEY_CTX *ctx = NULL;
|
|
|
|
/* Use the dsa params in a EVP_PKEY ctx */
|
|
ctx = EVP_PKEY_CTX_new_from_name(libctx, "DSA", propq);
|
|
if (ctx == NULL) {
|
|
fprintf(stderr, "EVP_PKEY_CTX_new_from_name() failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (EVP_PKEY_paramgen_init(ctx) <= 0
|
|
|| EVP_PKEY_paramgen(ctx, &dsaparamkey) <= 0) {
|
|
fprintf(stderr, "DSA paramgen failed\n");
|
|
goto cleanup;
|
|
}
|
|
cleanup:
|
|
EVP_PKEY_CTX_free(ctx);
|
|
return dsaparamkey;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int rv = EXIT_FAILURE;
|
|
OSSL_LIB_CTX *libctx = NULL;
|
|
const char *propq = NULL;
|
|
EVP_PKEY *dsaparamskey = NULL;
|
|
EVP_PKEY *dsakey = NULL;
|
|
EVP_PKEY_CTX *ctx = NULL;
|
|
|
|
/* Generate random dsa params */
|
|
dsaparamskey = dsa_genparams(libctx, propq);
|
|
if (dsaparamskey == NULL)
|
|
goto cleanup;
|
|
|
|
/* Use the dsa params in a EVP_PKEY ctx */
|
|
ctx = EVP_PKEY_CTX_new_from_pkey(libctx, dsaparamskey, propq);
|
|
if (ctx == NULL) {
|
|
fprintf(stderr, "EVP_PKEY_CTX_new_from_pkey() failed\n");
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Generate a key using the dsa params */
|
|
if (EVP_PKEY_keygen_init(ctx) <= 0
|
|
|| EVP_PKEY_keygen(ctx, &dsakey) <= 0) {
|
|
fprintf(stderr, "DSA keygen failed\n");
|
|
goto cleanup;
|
|
}
|
|
|
|
if (!dsa_print_key(dsakey, 1, libctx, propq))
|
|
goto cleanup;
|
|
|
|
rv = EXIT_SUCCESS;
|
|
cleanup:
|
|
EVP_PKEY_free(dsakey);
|
|
EVP_PKEY_free(dsaparamskey);
|
|
EVP_PKEY_CTX_free(ctx);
|
|
return rv;
|
|
}
|