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/* $Id: key-openssl.cpp $ */
/** @file
* IPRT - Crypto - Cryptographic Keys, OpenSSL glue.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "internal/iprt.h"
#include <iprt/crypto/key.h>
#include <iprt/err.h>
#include <iprt/string.h>
#include <iprt/crypto/digest.h>
#ifdef IPRT_WITH_OPENSSL
# include "internal/iprt-openssl.h"
# include "internal/magics.h"
# include "openssl/evp.h"
# ifndef OPENSSL_VERSION_NUMBER
# error "Missing OPENSSL_VERSION_NUMBER!"
# endif
# include "key-internal.h"
/**
* Creates an OpenSSL key for the given IPRT one, returning the message digest
* algorithm if desired.
*
* @returns IRPT status code.
* @param hKey The key to convert to an OpenSSL key.
* @param fNeedPublic Set if we need the public side of the key.
* @param pszAlgoObjId Alogrithm stuff we currently need.
* @param ppEvpKey Where to return the pointer to the key structure.
* @param ppEvpMdType Where to optionally return the message digest type.
* @param pErrInfo Where to optionally return more error details.
*/
DECLHIDDEN(int) rtCrKeyToOpenSslKey(RTCRKEY hKey, bool fNeedPublic, const char *pszAlgoObjId,
void /*EVP_PKEY*/ **ppEvpKey, const void /*EVP_MD*/ **ppEvpMdType, PRTERRINFO pErrInfo)
{
*ppEvpKey = NULL;
if (ppEvpMdType)
*ppEvpMdType = NULL;
AssertReturn(hKey->u32Magic == RTCRKEYINT_MAGIC, VERR_INVALID_HANDLE);
AssertReturn(fNeedPublic == !(hKey->fFlags & RTCRKEYINT_F_PRIVATE), VERR_WRONG_TYPE);
rtCrOpenSslInit();
/*
* Translate algorithm object ID into stuff that OpenSSL wants.
*/
int iAlgoNid = OBJ_txt2nid(pszAlgoObjId);
if (iAlgoNid == NID_undef)
return RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_CIPHER_ALGO_NOT_KNOWN,
"Unknown public key algorithm [OpenSSL]: %s", pszAlgoObjId);
const char *pszAlgoSn = OBJ_nid2sn(iAlgoNid);
# if OPENSSL_VERSION_NUMBER >= 0x10001000 && !defined(LIBRESSL_VERSION_NUMBER)
int idAlgoPkey = 0;
int idAlgoMd = 0;
if (!OBJ_find_sigid_algs(iAlgoNid, &idAlgoMd, &idAlgoPkey))
return RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_CIPHER_ALGO_NOT_KNOWN_EVP,
"OBJ_find_sigid_algs failed on %u (%s, %s)", iAlgoNid, pszAlgoSn, pszAlgoObjId);
if (ppEvpMdType)
{
const EVP_MD *pEvpMdType = EVP_get_digestbynid(idAlgoMd);
if (!pEvpMdType)
return RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_CIPHER_ALGO_NOT_KNOWN_EVP,
"EVP_get_digestbynid failed on %d (%s, %s)", idAlgoMd, pszAlgoSn, pszAlgoObjId);
*ppEvpMdType = pEvpMdType;
}
# else
const EVP_MD *pEvpMdType = EVP_get_digestbyname(pszAlgoSn);
if (!pEvpMdType)
return RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_CIPHER_ALGO_NOT_KNOWN_EVP,
"EVP_get_digestbyname failed on %s (%s)", pszAlgoSn, pszAlgoObjId);
if (ppEvpMdType)
*ppEvpMdType = pEvpMdType;
# endif
/*
* Allocate a new key structure and set its type.
*/
EVP_PKEY *pEvpNewKey = EVP_PKEY_new();
if (!pEvpNewKey)
return RTErrInfoSetF(pErrInfo, VERR_NO_MEMORY, "EVP_PKEY_new(%d) failed", iAlgoNid);
int rc;
# if OPENSSL_VERSION_NUMBER >= 0x10001000 && !defined(LIBRESSL_VERSION_NUMBER)
if (EVP_PKEY_set_type(pEvpNewKey, idAlgoPkey))
{
int idKeyType = EVP_PKEY_base_id(pEvpNewKey);
# else
int idKeyType = pEvpNewKey->type = EVP_PKEY_type(pEvpMdType->required_pkey_type[0]);
# endif
if (idKeyType != NID_undef)
{
/*
* Load the key into the structure.
*/
const unsigned char *puchPublicKey = hKey->pbEncoded;
EVP_PKEY *pRet;
if (fNeedPublic)
*ppEvpKey = pRet = d2i_PublicKey(idKeyType, &pEvpNewKey, &puchPublicKey, hKey->cbEncoded);
else
*ppEvpKey = pRet = d2i_PrivateKey(idKeyType, &pEvpNewKey, &puchPublicKey, hKey->cbEncoded);
if (pRet)
return VINF_SUCCESS;
/* Bail out: */
rc = RTErrInfoSet(pErrInfo, VERR_CR_PKIX_OSSL_D2I_PUBLIC_KEY_FAILED,
fNeedPublic ? "d2i_PublicKey failed" : "d2i_PrivateKey failed");
}
else
# if OPENSSL_VERSION_NUMBER < 0x10001000 || defined(LIBRESSL_VERSION_NUMBER)
rc = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_EVP_PKEY_TYPE_ERROR, "EVP_PKEY_type() failed");
# else
rc = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_EVP_PKEY_TYPE_ERROR, "EVP_PKEY_base_id() failed");
}
else
rc = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_EVP_PKEY_TYPE_ERROR,
"EVP_PKEY_set_type(%u) failed (sig algo %s)", idAlgoPkey, pszAlgoSn);
# endif
EVP_PKEY_free(pEvpNewKey);
return rc;
}
#endif /* IPRT_WITH_OPENSSL */
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