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/* $Id: pkix-util.cpp $ */
/** @file
* IPRT - Crypto - Public Key Infrastructure API, Utilities.
*/
/*
* Copyright (C) 2006-2022 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/pkix.h>
#include <iprt/asn1.h>
#include <iprt/assert.h>
#include <iprt/err.h>
#include <iprt/string.h>
#include <iprt/crypto/rsa.h>
#ifdef IPRT_WITH_OPENSSL
# include "internal/iprt-openssl.h"
# include "internal/openssl-pre.h"
# include <openssl/evp.h>
# include "internal/openssl-post.h"
#endif
RTDECL(const char *) RTCrPkixGetCiperOidFromSignatureAlgorithm(PCRTASN1OBJID pAlgorithm)
{
/*
* This is all hardcoded, at least for the time being.
*/
if (RTAsn1ObjId_StartsWith(pAlgorithm, RTCR_PKCS1_OID))
{
if (RTAsn1ObjIdCountComponents(pAlgorithm) == 7)
switch (RTAsn1ObjIdGetLastComponentsAsUInt32(pAlgorithm))
{
case 2:
case 3:
case 4:
case 5:
case 11:
case 12:
case 13:
case 14:
return RTCR_PKCS1_RSA_OID;
case 1: AssertFailed();
RT_FALL_THRU();
default:
return NULL;
}
}
/*
* OIW oddballs.
*/
else if (RTAsn1ObjId_StartsWith(pAlgorithm, "1.3.14.3.2"))
{
if (RTAsn1ObjIdCountComponents(pAlgorithm) == 6)
switch (RTAsn1ObjIdGetLastComponentsAsUInt32(pAlgorithm))
{
case 11:
case 14:
case 15:
case 24:
case 25:
case 29:
return RTCR_PKCS1_RSA_OID;
default:
return NULL;
}
}
return NULL;
}
RTDECL(bool) RTCrPkixPubKeyCanHandleDigestType(PCRTCRX509SUBJECTPUBLICKEYINFO pPublicKeyInfo, RTDIGESTTYPE enmDigestType,
PRTERRINFO pErrInfo)
{
bool fRc = false;
if (RTCrX509SubjectPublicKeyInfo_IsPresent(pPublicKeyInfo))
{
void const * const pvKeyBits = RTASN1BITSTRING_GET_BIT0_PTR(&pPublicKeyInfo->SubjectPublicKey);
uint32_t const cbKeyBits = RTASN1BITSTRING_GET_BYTE_SIZE(&pPublicKeyInfo->SubjectPublicKey);
RTASN1CURSORPRIMARY PrimaryCursor;
union
{
RTCRRSAPUBLICKEY RsaPublicKey;
} u;
if (RTAsn1ObjId_CompareWithString(&pPublicKeyInfo->Algorithm.Algorithm, RTCR_PKCS1_RSA_OID) == 0)
{
/*
* RSA.
*/
RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1DefaultAllocator,
RTASN1CURSOR_FLAGS_DER, "rsa");
RT_ZERO(u.RsaPublicKey);
int rc = RTCrRsaPublicKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &u.RsaPublicKey, "PublicKey");
if (RT_SUCCESS(rc))
fRc = RTCrRsaPublicKey_CanHandleDigestType(&u.RsaPublicKey, enmDigestType, pErrInfo);
RTCrRsaPublicKey_Delete(&u.RsaPublicKey);
}
else
{
RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_CIPHER_ALGO_NOT_KNOWN, "%s", pPublicKeyInfo->Algorithm.Algorithm.szObjId);
AssertMsgFailed(("unknown key algorithm: %s\n", pPublicKeyInfo->Algorithm.Algorithm.szObjId));
fRc = true;
}
}
return fRc;
}
RTDECL(bool) RTCrPkixCanCertHandleDigestType(PCRTCRX509CERTIFICATE pCertificate, RTDIGESTTYPE enmDigestType, PRTERRINFO pErrInfo)
{
if (RTCrX509Certificate_IsPresent(pCertificate))
return RTCrPkixPubKeyCanHandleDigestType(&pCertificate->TbsCertificate.SubjectPublicKeyInfo, enmDigestType, pErrInfo);
return false;
}
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