| 1 | /* $Id: key-create-rsa-openssl.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Crypto - RSA Key Creation using OpenSSL.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2018-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include "internal/iprt.h"
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| 42 | #include <iprt/crypto/key.h>
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| 43 |
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| 44 | #ifdef IPRT_WITH_OPENSSL /* Whole file. */
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| 45 | # include <iprt/err.h>
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| 46 | # include <iprt/string.h>
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| 47 |
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| 48 | # include "internal/iprt-openssl.h"
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| 49 | # include "internal/openssl-pre.h"
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| 50 | # include <openssl/rsa.h>
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| 51 | # include <openssl/err.h>
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| 52 | # include "internal/openssl-post.h"
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| 53 |
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| 54 | # include "key-internal.h"
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| 55 |
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| 56 |
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| 57 |
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| 58 | RTDECL(int) RTCrKeyCreateNewRsa(PRTCRKEY phKey, uint32_t cBits, uint32_t uPubExp, uint32_t fFlags)
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| 59 | {
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| 60 | AssertPtrReturn(phKey, VERR_INVALID_POINTER);
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| 61 | AssertMsgReturn(cBits >= 128 && cBits <= _64K, ("cBits=%u\n", cBits), VERR_OUT_OF_RANGE);
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| 62 | AssertReturn(uPubExp > 0, VERR_OUT_OF_RANGE);
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| 63 | AssertReturn(!fFlags, VERR_INVALID_FLAGS);
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| 64 |
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| 65 | rtCrOpenSslInit();
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| 66 |
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| 67 | /*
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| 68 | * Do the key generation first.
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| 69 | */
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| 70 | int rc = VERR_NO_MEMORY;
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| 71 | RSA *pRsa = RSA_new();
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| 72 | if (pRsa)
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| 73 | {
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| 74 | BIGNUM *pPubExp = BN_new();
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| 75 | if (pPubExp)
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| 76 | {
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| 77 | if (BN_set_word(pPubExp, uPubExp) != 0)
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| 78 | {
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| 79 | if (RSA_generate_key_ex(pRsa, cBits, pPubExp, NULL))
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| 80 | {
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| 81 | /*
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| 82 | * Create a IPRT key for it by encoding it as a private key.
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| 83 | */
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| 84 | unsigned char *pbRsaPrivateKey = NULL;
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| 85 | int cbRsaPrivateKey = i2d_RSAPrivateKey(pRsa, &pbRsaPrivateKey);
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| 86 | if (cbRsaPrivateKey > 0)
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| 87 | {
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| 88 | rc = rtCrKeyCreateRsaPrivate(phKey, pbRsaPrivateKey, cbRsaPrivateKey, NULL, NULL);
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| 89 | OPENSSL_free(pbRsaPrivateKey);
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| 90 | }
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| 91 | /* else: VERR_NO_MEMORY */
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| 92 | }
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| 93 | else
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| 94 | rc = VERR_CR_KEY_GEN_FAILED_RSA;
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| 95 | }
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| 96 | BN_free(pPubExp);
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| 97 | }
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| 98 | RSA_free(pRsa);
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| 99 | }
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| 100 | return rc;
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| 101 | }
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| 102 |
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| 103 | #endif /* IPRT_WITH_OPENSSL */
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| 104 |
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