[73665] | 1 | /* $Id: key.cpp 100442 2023-07-08 11:10:51Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Crypto - Cryptographic Keys.
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| 4 | */
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| 5 |
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| 6 | /*
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[98103] | 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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[73665] | 8 | *
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[96407] | 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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[73665] | 11 | *
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[96407] | 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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[73665] | 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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[96407] | 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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[73665] | 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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[96407] | 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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[73665] | 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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[100442] | 41 | #define LOG_GROUP RTLOGGROUP_CRYPTO
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[73665] | 42 | #include "internal/iprt.h"
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| 43 | #include <iprt/crypto/key.h>
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| 44 |
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| 45 | #include <iprt/asm.h>
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| 46 | #include <iprt/assert.h>
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| 47 | #include <iprt/err.h>
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[100442] | 48 | #include <iprt/log.h>
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[73665] | 49 | #include <iprt/mem.h>
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| 50 | #include <iprt/memsafer.h>
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| 51 | #include <iprt/string.h>
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| 52 | #include <iprt/crypto/rsa.h>
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| 53 | #include <iprt/crypto/pkix.h>
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| 54 |
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| 55 | #include "internal/magics.h"
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| 56 | #include "key-internal.h"
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| 57 |
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| 58 |
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| 59 | /**
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| 60 | * Internal crypto key instance creator.
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| 61 | *
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| 62 | * This does most of the common work, caller does the 'u' and cBits jobs.
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| 63 | *
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| 64 | * @returns IPRT status code.
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| 65 | * @param ppThis Where to return the key instance.
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| 66 | * @param enmType The key type.
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| 67 | * @param fFlags The key flags.
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| 68 | * @param pvEncoded The encoded key bits.
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| 69 | * @param cbEncoded The size of the encoded key bits (in bytes).
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| 70 | */
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| 71 | DECLHIDDEN(int) rtCrKeyCreateWorker(PRTCRKEYINT *ppThis, RTCRKEYTYPE enmType, uint32_t fFlags,
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| 72 | void const *pvEncoded, uint32_t cbEncoded)
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| 73 | {
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| 74 | PRTCRKEYINT pThis = (PRTCRKEYINT)RTMemAllocZ(sizeof(*pThis) + (fFlags & RTCRKEYINT_F_SENSITIVE ? 0 : cbEncoded));
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| 75 | if (pThis)
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| 76 | {
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| 77 | pThis->enmType = enmType;
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| 78 | pThis->fFlags = fFlags;
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| 79 | #if defined(IPRT_WITH_OPENSSL)
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[96763] | 80 | pThis->fFlags |= RTCRKEYINT_F_INCLUDE_ENCODED;
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[73665] | 81 | pThis->cbEncoded = cbEncoded;
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| 82 | if (!(fFlags & RTCRKEYINT_F_SENSITIVE))
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| 83 | pThis->pbEncoded = (uint8_t *)(pThis + 1);
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| 84 | else
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| 85 | {
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| 86 | pThis->pbEncoded = (uint8_t *)RTMemSaferAllocZ(cbEncoded);
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| 87 | if (!pThis->pbEncoded)
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| 88 | {
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| 89 | RTMemFree(pThis);
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| 90 | return VERR_NO_MEMORY;
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| 91 | }
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| 92 | }
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| 93 | memcpy(pThis->pbEncoded, pvEncoded, cbEncoded);
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| 94 | #else
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| 95 | RT_NOREF(pvEncoded, cbEncoded);
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| 96 | #endif
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| 97 | pThis->cRefs = 1;
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| 98 | pThis->u32Magic = RTCRKEYINT_MAGIC;
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| 99 | *ppThis = pThis;
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| 100 | return VINF_SUCCESS;
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| 101 | }
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| 102 | return VERR_NO_MEMORY;
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| 103 | }
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| 104 |
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| 105 |
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| 106 | /**
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| 107 | * Creates an RSA public key from a DER encoded RTCRRSAPUBLICKEY blob.
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| 108 | *
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| 109 | * @returns IPRT status code.
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| 110 | * @param phKey Where to return the key handle.
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| 111 | * @param pvKeyBits The DER encoded RTCRRSAPUBLICKEY blob.
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| 112 | * @param cbKeyBits The size of the blob.
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| 113 | * @param pErrInfo Where to supply addition error details. Optional.
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| 114 | * @param pszErrorTag Error tag. Optional.
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| 115 | */
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| 116 | DECLHIDDEN(int) rtCrKeyCreateRsaPublic(PRTCRKEY phKey, const void *pvKeyBits, uint32_t cbKeyBits,
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| 117 | PRTERRINFO pErrInfo, const char *pszErrorTag)
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| 118 | {
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| 119 | /*
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| 120 | * Decode the key data first since that's what's most likely to fail here.
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| 121 | */
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| 122 | RTASN1CURSORPRIMARY PrimaryCursor;
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| 123 | RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1DefaultAllocator,
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| 124 | RTASN1CURSOR_FLAGS_DER, pszErrorTag ? pszErrorTag : "rsa");
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| 125 | RTCRRSAPUBLICKEY PublicKey;
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| 126 | RT_ZERO(PublicKey);
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| 127 | int rc = RTCrRsaPublicKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &PublicKey, pszErrorTag ? pszErrorTag : "PublicKey");
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| 128 | if (RT_SUCCESS(rc))
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| 129 | {
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[100442] | 130 | /*
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| 131 | * Create a key instance for it.
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| 132 | */
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[73665] | 133 | PRTCRKEYINT pThis;
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| 134 | rc = rtCrKeyCreateWorker(&pThis, RTCRKEYTYPE_RSA_PUBLIC, RTCRKEYINT_F_PUBLIC, pvKeyBits, cbKeyBits);
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| 135 | if (RT_SUCCESS(rc))
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| 136 | {
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| 137 | rc = RTAsn1Integer_ToBigNum(&PublicKey.Modulus, &pThis->u.RsaPublic.Modulus, 0);
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| 138 | if (RT_SUCCESS(rc))
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| 139 | {
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| 140 | pThis->cBits = RTBigNumBitWidth(&pThis->u.RsaPublic.Modulus);
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| 141 | rc = RTAsn1Integer_ToBigNum(&PublicKey.PublicExponent, &pThis->u.RsaPublic.Exponent, 0);
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| 142 | if (RT_SUCCESS(rc))
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| 143 | {
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| 144 |
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| 145 | /* Done. */
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| 146 | RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
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| 147 | *phKey = pThis;
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| 148 | return VINF_SUCCESS;
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| 149 | }
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| 150 | }
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| 151 | RTCrKeyRelease(pThis);
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| 152 | }
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| 153 | RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
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| 154 | }
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| 155 | *phKey = NIL_RTCRKEY;
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| 156 | return rc;
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| 157 | }
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| 158 |
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| 159 |
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[100442] | 160 | /**
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| 161 | * Creates an EC (ECDSA) public key from a DER encoded RTCRX50-PUBLICKEY blob.
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| 162 | *
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| 163 | * @returns IPRT status code.
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| 164 | * @param phKey Where to return the key handle.
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| 165 | * @param pParameters The algorithm parameters, typically namedCurve OID.
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| 166 | * @param pvKeyBits The DER encoded RTCRRSAPUBLICKEY blob.
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| 167 | * @param cbKeyBits The size of the blob.
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| 168 | * @param pErrInfo Where to supply addition error details. Optional.
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| 169 | * @param pszErrorTag Error tag. Optional.
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| 170 | */
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| 171 | DECLHIDDEN(int) rtCrKeyCreateEcdsaPublic(PRTCRKEY phKey, PCRTASN1DYNTYPE pParameters, const void *pvKeyBits, uint32_t cbKeyBits,
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| 172 | PRTERRINFO pErrInfo, const char *pszErrorTag)
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[73665] | 173 | {
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[100442] | 174 | #if 0
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[73665] | 175 | /*
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[100442] | 176 | * Decode the key data first since that's what's most likely to fail here.
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| 177 | */
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| 178 | RTASN1CURSORPRIMARY PrimaryCursor;
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| 179 | RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1DefaultAllocator,
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| 180 | RTASN1CURSOR_FLAGS_DER, pszErrorTag ? pszErrorTag : "rsa");
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| 181 | RTCRRSAPUBLICKEY PublicKey;
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| 182 | RT_ZERO(PublicKey);
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| 183 | int rc = RTCrRsaPublicKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &PublicKey, pszErrorTag ? pszErrorTag : "PublicKey");
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| 184 | #else
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| 185 | RT_NOREF(pszErrorTag);
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| 186 | int rc = VINF_SUCCESS;
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| 187 | #endif
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| 188 | if (RT_SUCCESS(rc))
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| 189 | {
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| 190 | /*
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| 191 | * Check the parameter (see RTC-5480, section 2.1.1).
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| 192 | */
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| 193 | if ( pParameters
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| 194 | && pParameters->enmType == RTASN1TYPE_OBJID
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| 195 | && RTAsn1ObjId_IsPresent(&pParameters->u.ObjId) /* paranoia */)
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| 196 | {
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| 197 | /*
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| 198 | * Create a key instance for it.
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| 199 | */
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| 200 | PRTCRKEYINT pThis;
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| 201 | rc = rtCrKeyCreateWorker(&pThis, RTCRKEYTYPE_ECDSA_PUBLIC, RTCRKEYINT_F_PUBLIC, pvKeyBits, cbKeyBits);
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| 202 | if (RT_SUCCESS(rc))
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| 203 | {
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| 204 | rc = RTAsn1ObjId_Clone(&pThis->u.EcdsaPublic.NamedCurve, &pParameters->u.ObjId, &g_RTAsn1DefaultAllocator);
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| 205 | if (RT_SUCCESS(rc))
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| 206 | {
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| 207 | /* Done. */
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| 208 | #if 0
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| 209 | RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
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| 210 | #endif
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| 211 | *phKey = pThis;
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| 212 | return VINF_SUCCESS;
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| 213 | }
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| 214 | RTCrKeyRelease(pThis);
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| 215 | }
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| 216 | }
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| 217 | else if (!pParameters || pParameters->enmType == RTASN1TYPE_NOT_PRESENT)
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| 218 | rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_MISSING,
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| 219 | "%s: ECDSA public key expected a namedCurve parameter", pszErrorTag);
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| 220 | else if (pParameters->enmType == RTASN1TYPE_NULL)
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| 221 | rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNKNOWN,
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| 222 | "%s: ECDSA public key expected a namedCurve parameter, found implicitCurve (NULL) instead",
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| 223 | pszErrorTag);
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| 224 | else
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| 225 | rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNKNOWN,
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| 226 | "%s: ECDSA public key expected namedCurve parameter, found %d",
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| 227 | pszErrorTag, pParameters->enmType);
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| 228 | #if 0
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| 229 | RTAsn1VtDelete(&PublicKey.SeqCore.Asn1Core);
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| 230 | #endif
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| 231 | }
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| 232 | *phKey = NIL_RTCRKEY;
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| 233 | return rc;
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| 234 | }
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| 235 |
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| 236 |
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| 237 | RTDECL(int) RTCrKeyCreateFromPublicAlgorithmAndBits(PRTCRKEY phKey, PCRTASN1OBJID pAlgorithm, PCRTASN1DYNTYPE pParameters,
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| 238 | PCRTASN1BITSTRING pPublicKey, PRTERRINFO pErrInfo, const char *pszErrorTag)
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| 239 | {
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| 240 | /*
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[73665] | 241 | * Validate input.
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| 242 | */
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| 243 | AssertPtrReturn(phKey, VERR_INVALID_POINTER);
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| 244 | *phKey = NIL_RTCRKEY;
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| 245 |
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| 246 | AssertPtrReturn(pAlgorithm, VERR_INVALID_POINTER);
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| 247 | AssertReturn(RTAsn1ObjId_IsPresent(pAlgorithm), VERR_INVALID_PARAMETER);
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| 248 |
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| 249 | AssertPtrReturn(pPublicKey, VERR_INVALID_POINTER);
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| 250 | AssertReturn(RTAsn1BitString_IsPresent(pPublicKey), VERR_INVALID_PARAMETER);
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| 251 |
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| 252 | /*
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[100442] | 253 | * Identify the key type from the algorithm ID
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[73665] | 254 | */
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[100442] | 255 | const char * const pszEncryptionOid = RTCrX509AlgorithmIdentifier_GetEncryptionOidFromOid(pAlgorithm->szObjId,
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| 256 | false /*fMustIncludeHash*/);
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| 257 | if (pszEncryptionOid)
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| 258 | {
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| 259 | if (strcmp(pszEncryptionOid, RTCRX509ALGORITHMIDENTIFIERID_RSA) == 0)
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| 260 | return rtCrKeyCreateRsaPublic(phKey,
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| 261 | RTASN1BITSTRING_GET_BIT0_PTR(pPublicKey),
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| 262 | RTASN1BITSTRING_GET_BYTE_SIZE(pPublicKey),
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| 263 | pErrInfo, pszErrorTag);
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| 264 | if (strcmp(pszEncryptionOid, RTCRX509ALGORITHMIDENTIFIERID_ECDSA) == 0)
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| 265 | return rtCrKeyCreateEcdsaPublic(phKey,
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| 266 | pParameters,
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| 267 | RTASN1BITSTRING_GET_BIT0_PTR(pPublicKey),
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| 268 | RTASN1BITSTRING_GET_BYTE_SIZE(pPublicKey),
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| 269 | pErrInfo, pszErrorTag);
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| 270 | }
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| 271 | Assert(pszEncryptionOid == NULL);
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[73665] | 272 | return RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_CIPHER_ALGO_NOT_KNOWN, "oid=%s", pAlgorithm->szObjId);
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| 273 | }
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| 274 |
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| 275 |
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| 276 | RTDECL(int) RTCrKeyCreateFromSubjectPublicKeyInfo(PRTCRKEY phKey, struct RTCRX509SUBJECTPUBLICKEYINFO const *pSrc,
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| 277 | PRTERRINFO pErrInfo, const char *pszErrorTag)
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| 278 | {
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| 279 | AssertPtrReturn(pSrc, VERR_INVALID_POINTER);
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| 280 | AssertReturn(RTCrX509SubjectPublicKeyInfo_IsPresent(pSrc), VERR_INVALID_PARAMETER);
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[100442] | 281 | return RTCrKeyCreateFromPublicAlgorithmAndBits(phKey, &pSrc->Algorithm.Algorithm, &pSrc->Algorithm.Parameters,
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| 282 | &pSrc->SubjectPublicKey, pErrInfo, pszErrorTag);
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[73665] | 283 | }
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| 284 |
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| 285 |
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| 286 | /**
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| 287 | * Creates an RSA private key from a DER encoded RTCRRSAPRIVATEKEY blob.
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| 288 | *
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| 289 | * @returns IPRT status code.
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| 290 | * @param phKey Where to return the key handle.
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| 291 | * @param pvKeyBits The DER encoded RTCRRSAPRIVATEKEY blob.
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| 292 | * @param cbKeyBits The size of the blob.
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| 293 | * @param pErrInfo Where to supply addition error details. Optional.
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| 294 | * @param pszErrorTag Error tag. Optional.
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| 295 | */
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| 296 | DECLHIDDEN(int) rtCrKeyCreateRsaPrivate(PRTCRKEY phKey, const void *pvKeyBits, uint32_t cbKeyBits,
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| 297 | PRTERRINFO pErrInfo, const char *pszErrorTag)
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| 298 | {
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| 299 | /*
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| 300 | * Decode the key data first since that's what's most likely to fail here.
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| 301 | */
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| 302 | RTASN1CURSORPRIMARY PrimaryCursor;
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| 303 | RTAsn1CursorInitPrimary(&PrimaryCursor, pvKeyBits, cbKeyBits, pErrInfo, &g_RTAsn1SaferAllocator,
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| 304 | RTASN1CURSOR_FLAGS_DER, pszErrorTag ? pszErrorTag : "rsa");
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| 305 | RTCRRSAPRIVATEKEY PrivateKey;
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| 306 | RT_ZERO(PrivateKey);
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| 307 | int rc = RTCrRsaPrivateKey_DecodeAsn1(&PrimaryCursor.Cursor, 0, &PrivateKey, pszErrorTag ? pszErrorTag : "PrivateKey");
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| 308 | if (RT_SUCCESS(rc))
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| 309 | {
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| 310 | /*
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| 311 | * Create a key instance for it.
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| 312 | */
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| 313 | PRTCRKEYINT pThis;
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| 314 | rc = rtCrKeyCreateWorker(&pThis, RTCRKEYTYPE_RSA_PRIVATE, RTCRKEYINT_F_PRIVATE | RTCRKEYINT_F_SENSITIVE,
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| 315 | pvKeyBits, cbKeyBits);
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| 316 | if (RT_SUCCESS(rc))
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| 317 | {
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| 318 | rc = RTAsn1Integer_ToBigNum(&PrivateKey.Modulus, &pThis->u.RsaPrivate.Modulus, 0);
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| 319 | if (RT_SUCCESS(rc))
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| 320 | {
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| 321 | pThis->cBits = RTBigNumBitWidth(&pThis->u.RsaPrivate.Modulus);
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| 322 | rc = RTAsn1Integer_ToBigNum(&PrivateKey.PrivateExponent, &pThis->u.RsaPrivate.PrivateExponent, 0);
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| 323 | if (RT_SUCCESS(rc))
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| 324 | {
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| 325 | rc = RTAsn1Integer_ToBigNum(&PrivateKey.PublicExponent, &pThis->u.RsaPrivate.PublicExponent, 0);
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| 326 | if (RT_SUCCESS(rc))
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| 327 | {
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| 328 | /* Done. */
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| 329 | RTAsn1VtDelete(&PrivateKey.SeqCore.Asn1Core);
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| 330 | RTMemWipeThoroughly(&PrivateKey, sizeof(PrivateKey), 3);
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| 331 | *phKey = pThis;
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| 332 | return VINF_SUCCESS;
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| 333 | }
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| 334 | }
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| 335 | }
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| 336 | RTCrKeyRelease(pThis);
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| 337 | }
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| 338 | RTAsn1VtDelete(&PrivateKey.SeqCore.Asn1Core);
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| 339 | RTMemWipeThoroughly(&PrivateKey, sizeof(PrivateKey), 3);
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| 340 | }
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| 341 | *phKey = NIL_RTCRKEY;
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| 342 | return rc;
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| 343 | }
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| 344 |
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| 345 |
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| 346 | RTDECL(uint32_t) RTCrKeyRetain(RTCRKEY hKey)
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| 347 | {
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| 348 | PRTCRKEYINT pThis = hKey;
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[74052] | 349 | AssertPtrReturn(pThis, UINT32_MAX);
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[73665] | 350 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, UINT32_MAX);
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| 351 |
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| 352 | uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs);
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| 353 | AssertMsg(cRefs > 1 && cRefs < 1024, ("%#x\n", cRefs));
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| 354 | return cRefs;
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| 355 | }
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| 356 |
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| 357 |
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| 358 | /**
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| 359 | * Destructor.
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| 360 | *
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| 361 | * @returns 0
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| 362 | * @param pThis The key to destroy.
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| 363 | */
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| 364 | static int rtCrKeyDestroy(PRTCRKEYINT pThis)
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| 365 | {
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| 366 | /* Invalidate the object. */
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| 367 | pThis->u32Magic = ~RTCRKEYINT_MAGIC;
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| 368 |
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| 369 | /* Type specific cleanup. */
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| 370 | switch (pThis->enmType)
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| 371 | {
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| 372 | case RTCRKEYTYPE_RSA_PUBLIC:
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| 373 | RTBigNumDestroy(&pThis->u.RsaPublic.Modulus);
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| 374 | RTBigNumDestroy(&pThis->u.RsaPublic.Exponent);
|
---|
| 375 | break;
|
---|
| 376 |
|
---|
| 377 | case RTCRKEYTYPE_RSA_PRIVATE:
|
---|
| 378 | RTBigNumDestroy(&pThis->u.RsaPrivate.Modulus);
|
---|
| 379 | RTBigNumDestroy(&pThis->u.RsaPrivate.PrivateExponent);
|
---|
| 380 | RTBigNumDestroy(&pThis->u.RsaPrivate.PublicExponent);
|
---|
| 381 | break;
|
---|
| 382 |
|
---|
[100442] | 383 | case RTCRKEYTYPE_ECDSA_PUBLIC:
|
---|
| 384 | RTAsn1ObjId_Delete(&pThis->u.EcdsaPublic.NamedCurve);
|
---|
| 385 | break;
|
---|
| 386 |
|
---|
| 387 | case RTCRKEYTYPE_ECDSA_PRIVATE: /* not yet implemented */
|
---|
[73665] | 388 | case RTCRKEYTYPE_INVALID:
|
---|
| 389 | case RTCRKEYTYPE_END:
|
---|
| 390 | case RTCRKEYTYPE_32BIT_HACK:
|
---|
| 391 | AssertFailed();
|
---|
| 392 | }
|
---|
| 393 | pThis->enmType = RTCRKEYTYPE_INVALID;
|
---|
| 394 |
|
---|
| 395 | #if defined(IPRT_WITH_OPENSSL)
|
---|
| 396 | /* Free the encoded form if sensitive (otherwise it follows pThis). */
|
---|
| 397 | if (pThis->pbEncoded)
|
---|
| 398 | {
|
---|
| 399 | if (pThis->fFlags & RTCRKEYINT_F_SENSITIVE)
|
---|
| 400 | RTMemSaferFree((uint8_t *)pThis->pbEncoded, pThis->cbEncoded);
|
---|
| 401 | else
|
---|
| 402 | Assert(pThis->pbEncoded == (uint8_t *)(pThis + 1));
|
---|
| 403 | pThis->pbEncoded = NULL;
|
---|
| 404 | }
|
---|
| 405 | #endif
|
---|
| 406 |
|
---|
| 407 | /* Finally, free the key object itself. */
|
---|
| 408 | RTMemFree(pThis);
|
---|
| 409 | return 0;
|
---|
| 410 | }
|
---|
| 411 |
|
---|
| 412 |
|
---|
| 413 | RTDECL(uint32_t) RTCrKeyRelease(RTCRKEY hKey)
|
---|
| 414 | {
|
---|
| 415 | if (hKey == NIL_RTCRKEY)
|
---|
| 416 | return 0;
|
---|
| 417 | PRTCRKEYINT pThis = hKey;
|
---|
| 418 | AssertPtrReturn(pThis, UINT32_MAX);
|
---|
| 419 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, UINT32_MAX);
|
---|
| 420 |
|
---|
| 421 | uint32_t cRefs = ASMAtomicDecU32(&pThis->cRefs);
|
---|
| 422 | AssertMsg(cRefs < 1024, ("%#x\n", cRefs));
|
---|
| 423 | if (cRefs != 0)
|
---|
| 424 | return cRefs;
|
---|
| 425 | return rtCrKeyDestroy(pThis);
|
---|
| 426 | }
|
---|
| 427 |
|
---|
| 428 |
|
---|
| 429 | RTDECL(RTCRKEYTYPE) RTCrKeyGetType(RTCRKEY hKey)
|
---|
| 430 | {
|
---|
| 431 | PRTCRKEYINT pThis = hKey;
|
---|
| 432 | AssertPtrReturn(pThis, RTCRKEYTYPE_INVALID);
|
---|
| 433 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, RTCRKEYTYPE_INVALID);
|
---|
| 434 | return pThis->enmType;
|
---|
| 435 | }
|
---|
| 436 |
|
---|
| 437 |
|
---|
| 438 | RTDECL(bool) RTCrKeyHasPrivatePart(RTCRKEY hKey)
|
---|
| 439 | {
|
---|
| 440 | PRTCRKEYINT pThis = hKey;
|
---|
| 441 | AssertPtrReturn(pThis, false);
|
---|
| 442 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, false);
|
---|
| 443 | return RT_BOOL(pThis->fFlags & RTCRKEYINT_F_PRIVATE);
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 |
|
---|
| 447 | RTDECL(bool) RTCrKeyHasPublicPart(RTCRKEY hKey)
|
---|
| 448 | {
|
---|
| 449 | PRTCRKEYINT pThis = hKey;
|
---|
| 450 | AssertPtrReturn(pThis, false);
|
---|
| 451 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, false);
|
---|
| 452 | return RT_BOOL(pThis->fFlags & RTCRKEYINT_F_PUBLIC);
|
---|
| 453 | }
|
---|
| 454 |
|
---|
| 455 |
|
---|
| 456 | RTDECL(uint32_t) RTCrKeyGetBitCount(RTCRKEY hKey)
|
---|
| 457 | {
|
---|
| 458 | PRTCRKEYINT pThis = hKey;
|
---|
| 459 | AssertPtrReturn(pThis, 0);
|
---|
| 460 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, 0);
|
---|
| 461 | return pThis->cBits;
|
---|
| 462 | }
|
---|
| 463 |
|
---|
[74295] | 464 |
|
---|
| 465 | RTDECL(int) RTCrKeyQueryRsaModulus(RTCRKEY hKey, PRTBIGNUM pModulus)
|
---|
| 466 | {
|
---|
| 467 | PRTCRKEYINT pThis = hKey;
|
---|
| 468 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
|
---|
| 469 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, VERR_INVALID_HANDLE);
|
---|
| 470 | AssertReturn(pThis->enmType == RTCRKEYTYPE_RSA_PRIVATE || pThis->enmType == RTCRKEYTYPE_RSA_PUBLIC, VERR_WRONG_TYPE);
|
---|
| 471 | AssertPtrReturn(pModulus, VERR_INVALID_POINTER);
|
---|
| 472 |
|
---|
| 473 | if (pThis->enmType == RTCRKEYTYPE_RSA_PRIVATE)
|
---|
| 474 | return RTBigNumAssign(pModulus, &pThis->u.RsaPrivate.Modulus);
|
---|
| 475 | return RTBigNumAssign(pModulus, &pThis->u.RsaPublic.Modulus);
|
---|
| 476 | }
|
---|
| 477 |
|
---|
| 478 |
|
---|
| 479 | RTDECL(int) RTCrKeyQueryRsaPrivateExponent(RTCRKEY hKey, PRTBIGNUM pPrivateExponent)
|
---|
| 480 | {
|
---|
| 481 | PRTCRKEYINT pThis = hKey;
|
---|
| 482 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
|
---|
| 483 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, VERR_INVALID_HANDLE);
|
---|
| 484 | AssertReturn(pThis->enmType == RTCRKEYTYPE_RSA_PRIVATE, VERR_WRONG_TYPE);
|
---|
| 485 | AssertPtrReturn(pPrivateExponent, VERR_INVALID_POINTER);
|
---|
| 486 |
|
---|
| 487 | return RTBigNumAssign(pPrivateExponent, &pThis->u.RsaPrivate.PrivateExponent);
|
---|
| 488 | }
|
---|
| 489 |
|
---|
[100442] | 490 |
|
---|
| 491 | RTDECL(int) RTCrKeyVerifyParameterCompatibility(RTCRKEY hKey, PCRTASN1DYNTYPE pParameters, bool fForSignature,
|
---|
| 492 | PCRTASN1OBJID pAlgorithm, PRTERRINFO pErrInfo)
|
---|
| 493 | {
|
---|
| 494 | PRTCRKEYINT pThis = hKey;
|
---|
| 495 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
|
---|
| 496 | AssertReturn(pThis->u32Magic == RTCRKEYINT_MAGIC, VERR_INVALID_HANDLE);
|
---|
| 497 | RT_NOREF(pAlgorithm);
|
---|
| 498 |
|
---|
| 499 | switch (pThis->enmType)
|
---|
| 500 | {
|
---|
| 501 | /*
|
---|
| 502 | * No parameters. Ignore NULL.
|
---|
| 503 | */
|
---|
| 504 | case RTCRKEYTYPE_RSA_PRIVATE:
|
---|
| 505 | case RTCRKEYTYPE_RSA_PUBLIC:
|
---|
| 506 | if ( !pParameters
|
---|
| 507 | || pParameters->enmType == RTASN1TYPE_NOT_PRESENT
|
---|
| 508 | || pParameters->enmType == RTASN1TYPE_NULL)
|
---|
| 509 | return VINF_SUCCESS;
|
---|
| 510 | return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNEXPECTED,
|
---|
| 511 | "RSA keys does not generally take parameters (enmType=%d)", pParameters->enmType);
|
---|
| 512 |
|
---|
| 513 | /*
|
---|
| 514 | * ECDSA requires a parameter. Currently only the named curve choice is supported.
|
---|
| 515 | * RFC-3279 section 2.2.3 states that for ecdsa-with-SHA1 the parameter MUST be
|
---|
| 516 | * omitted. ASSUMING the same applies to the other ecdsa-with-xxxx variants.
|
---|
| 517 | */
|
---|
| 518 | case RTCRKEYTYPE_ECDSA_PUBLIC:
|
---|
| 519 | if (!fForSignature)
|
---|
| 520 | {
|
---|
| 521 | /* Key rules: Parameters required. */
|
---|
| 522 | if (pParameters)
|
---|
| 523 | {
|
---|
| 524 | if (pParameters->enmType == RTASN1TYPE_OBJID)
|
---|
| 525 | {
|
---|
| 526 | if (RTAsn1ObjId_Compare(&pParameters->u.ObjId, &pThis->u.EcdsaPublic.NamedCurve) == 0)
|
---|
| 527 | return VINF_SUCCESS;
|
---|
| 528 | return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_MISMATCH,
|
---|
| 529 | "ECDSA NamedCurve difference: %s, key uses %s",
|
---|
| 530 | pParameters->u.ObjId.szObjId, pThis->u.EcdsaPublic.NamedCurve.szObjId);
|
---|
| 531 | }
|
---|
| 532 | /* We don't implement the other variants. */
|
---|
| 533 | return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNKNOWN,
|
---|
| 534 | "Unexpected ECDSA parameter: enmType=%d", pParameters->enmType);
|
---|
| 535 | }
|
---|
| 536 | return RTERRINFO_LOG_SET(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_MISSING, "ECDSA keys requires parameter(s)");
|
---|
| 537 | }
|
---|
| 538 |
|
---|
| 539 | /* Hash+ecdsa parameter rules: No parameters */
|
---|
| 540 | if ( !pParameters
|
---|
| 541 | || pParameters->enmType == RTASN1TYPE_NOT_PRESENT
|
---|
| 542 | || pParameters->enmType == RTASN1TYPE_NULL)
|
---|
| 543 | return VINF_SUCCESS;
|
---|
| 544 | return RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_KEY_ALGO_PARAMS_UNEXPECTED,
|
---|
| 545 | "ECDSA signature should have no parameters (enmType=%d)", pParameters->enmType);
|
---|
| 546 |
|
---|
| 547 | case RTCRKEYTYPE_ECDSA_PRIVATE:
|
---|
| 548 | AssertFailedReturn(VERR_NOT_IMPLEMENTED);
|
---|
| 549 |
|
---|
| 550 | case RTCRKEYTYPE_INVALID:
|
---|
| 551 | case RTCRKEYTYPE_END:
|
---|
| 552 | case RTCRKEYTYPE_32BIT_HACK:
|
---|
| 553 | break;
|
---|
| 554 | }
|
---|
| 555 | AssertFailedReturn(VERR_INTERNAL_ERROR_5);
|
---|
| 556 | }
|
---|
| 557 |
|
---|