| 1 | /* $Id: pkix-util.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Crypto - Public Key Infrastructure API, Utilities.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2024 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/pkix.h>
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| 43 |
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| 44 | #include <iprt/asn1.h>
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| 45 | #include <iprt/assert.h>
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| 46 | #include <iprt/err.h>
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| 47 | #include <iprt/crypto/rsa.h>
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| 48 |
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| 49 |
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| 50 | RTDECL(const char *) RTCrPkixGetCiperOidFromSignatureAlgorithmOid(const char *pszSignatureOid)
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| 51 | {
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| 52 | return RTCrX509AlgorithmIdentifier_GetEncryptionOidFromOid(pszSignatureOid, true /*fMustIncludeHash*/);
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| 53 | }
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| 54 |
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| 55 |
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| 56 | RTDECL(const char *) RTCrPkixGetCiperOidFromSignatureAlgorithm(PCRTASN1OBJID pAlgorithm)
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| 57 | {
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| 58 | return RTCrX509AlgorithmIdentifier_GetEncryptionOidFromOid(pAlgorithm->szObjId, true /*fMustIncludeHash*/);
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| 59 | }
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| 60 |
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| 61 |
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| 62 | RTDECL(bool) RTCrPkixPubKeyCanHandleDigestType(PCRTCRX509SUBJECTPUBLICKEYINFO pPublicKeyInfo, RTDIGESTTYPE enmDigestType,
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| 63 | PRTERRINFO pErrInfo)
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| 64 | {
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| 65 | bool fRc = false;
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| 66 | if (RTCrX509SubjectPublicKeyInfo_IsPresent(pPublicKeyInfo))
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| 67 | {
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| 68 | void const * const pvKeyBits = RTASN1BITSTRING_GET_BIT0_PTR(&pPublicKeyInfo->SubjectPublicKey);
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| 69 | uint32_t const cbKeyBits = RTASN1BITSTRING_GET_BYTE_SIZE(&pPublicKeyInfo->SubjectPublicKey);
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| 70 | RTASN1CURSORPRIMARY PrimaryCursor;
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| 71 | union
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| 72 | {
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| 73 | RTCRRSAPUBLICKEY RsaPublicKey;
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| 74 | } u;
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| 75 |
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| 76 | if (RTAsn1ObjId_CompareWithString(&pPublicKeyInfo->Algorithm.Algorithm, RTCR_PKCS1_RSA_OID) == 0)
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| 77 | {
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| 78 | /*
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| 79 | * RSA.
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| 80 | */
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| 81 | RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1DefaultAllocator,
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| 82 | RTASN1CURSOR_FLAGS_DER, "rsa");
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| 83 |
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| 84 | RT_ZERO(u.RsaPublicKey);
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| 85 | int rc = RTCrRsaPublicKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &u.RsaPublicKey, "PublicKey");
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| 86 | if (RT_SUCCESS(rc))
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| 87 | fRc = RTCrRsaPublicKey_CanHandleDigestType(&u.RsaPublicKey, enmDigestType, pErrInfo);
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| 88 | RTCrRsaPublicKey_Delete(&u.RsaPublicKey);
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| 89 | }
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| 90 | else
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| 91 | {
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| 92 | /** @todo ECDSA when adding signing support. */
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| 93 | RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_CIPHER_ALGO_NOT_KNOWN, "%s", pPublicKeyInfo->Algorithm.Algorithm.szObjId);
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| 94 | AssertMsgFailed(("unknown key algorithm: %s\n", pPublicKeyInfo->Algorithm.Algorithm.szObjId));
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| 95 | fRc = true;
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| 96 | }
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| 97 | }
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| 98 | return fRc;
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| 99 | }
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| 100 |
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| 101 |
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| 102 | RTDECL(bool) RTCrPkixCanCertHandleDigestType(PCRTCRX509CERTIFICATE pCertificate, RTDIGESTTYPE enmDigestType, PRTERRINFO pErrInfo)
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| 103 | {
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| 104 | if (RTCrX509Certificate_IsPresent(pCertificate))
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| 105 | return RTCrPkixPubKeyCanHandleDigestType(&pCertificate->TbsCertificate.SubjectPublicKeyInfo, enmDigestType, pErrInfo);
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| 106 | return false;
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| 107 | }
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| 108 |
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