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/* $Id: key-create-rsa-openssl.cpp $ */
/** @file
* IPRT - Crypto - RSA Key Creation using OpenSSL.
*/
/*
* Copyright (C) 2018-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "internal/iprt.h"
#include <iprt/crypto/key.h>
#ifdef IPRT_WITH_OPENSSL /* Whole file. */
# include <iprt/err.h>
# include <iprt/string.h>
# include "internal/iprt-openssl.h"
# include "internal/openssl-pre.h"
# include <openssl/rsa.h>
# include <openssl/err.h>
# include "internal/openssl-post.h"
# include "key-internal.h"
RTDECL(int) RTCrKeyCreateNewRsa(PRTCRKEY phKey, uint32_t cBits, uint32_t uPubExp, uint32_t fFlags)
{
AssertPtrReturn(phKey, VERR_INVALID_POINTER);
AssertMsgReturn(cBits >= 128 && cBits <= _64K, ("cBits=%u\n", cBits), VERR_OUT_OF_RANGE);
AssertReturn(uPubExp > 0, VERR_OUT_OF_RANGE);
AssertReturn(!fFlags, VERR_INVALID_FLAGS);
rtCrOpenSslInit();
/*
* Do the key generation first.
*/
int rc = VERR_NO_MEMORY;
RSA *pRsa = RSA_new();
if (pRsa)
{
BIGNUM *pPubExp = BN_new();
if (pPubExp)
{
if (BN_set_word(pPubExp, uPubExp) != 0)
{
if (RSA_generate_key_ex(pRsa, cBits, pPubExp, NULL))
{
/*
* Create a IPRT key for it by encoding it as a private key.
*/
unsigned char *pbRsaPrivateKey = NULL;
int cbRsaPrivateKey = i2d_RSAPrivateKey(pRsa, &pbRsaPrivateKey);
if (cbRsaPrivateKey > 0)
{
rc = rtCrKeyCreateRsaPrivate(phKey, pbRsaPrivateKey, cbRsaPrivateKey, NULL, NULL);
OPENSSL_free(pbRsaPrivateKey);
}
/* else: VERR_NO_MEMORY */
}
else
rc = VERR_CR_KEY_GEN_FAILED_RSA;
}
BN_free(pPubExp);
}
RSA_free(pRsa);
}
return rc;
}
#endif /* IPRT_WITH_OPENSSL */
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