f0fda7ad22
... and use it in the new experimental ODF encryption mode. https://www.w3.org/TR/xmlenc-core1/#sec-AES-GCM Unfortunately it turned out that NSS PK11_CipherOp() does not work with CKM_AES_GCM because it is initialized with "context->multi = PR_FALSE" in sftk_CryptInit(), so the one-step functions PK11_Encrypt() and PK11_Decrypt() have to be used. NSS 3.52 also changed a parameter struct definition - see https://fedoraproject.org/wiki/Changes/NssGCMParams - which is not a problem for RHEL or SUSE system NSS since those are rebased, but it is likely a problem for less well maintained Ubuntu LTS, so use the old struct definition which evidently still works with NSS 3.94. NSS 3.52 also added a new PK11_AEADOp() API but it looks like this doesn't support incremental encryption either. Change-Id: Ibd4a672db74b65b1218926ba35ff8d2f70444c7e Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160505 Tested-by: Jenkins Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <com/sun/star/xml/crypto/XCipherContext.hpp>
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#include <cppuhelper/implbase.hxx>
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#include <mutex>
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#include <seccomon.h>
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#include <secmodt.h>
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class OCipherContext : public cppu::WeakImplHelper< css::xml::crypto::XCipherContext >
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{
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private:
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std::mutex m_aMutex;
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PK11SlotInfo* m_pSlot;
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PK11SymKey* m_pSymKey;
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SECItem* m_pSecParam;
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PK11Context* m_pContext;
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sal_Int32 m_nBlockSize;
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css::uno::Sequence< sal_Int8 > m_aLastBlock;
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css::uno::Sequence<sal_Int8> m_AESGCMIV;
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bool m_bEncryption;
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bool m_bPadding;
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bool m_bW3CPadding;
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sal_Int64 m_nConverted;
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bool m_bDisposed;
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bool m_bBroken;
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void Dispose();
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OCipherContext()
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: m_pSlot( nullptr )
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, m_pSymKey( nullptr )
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, m_pSecParam( nullptr )
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, m_pContext( nullptr )
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, m_nBlockSize( 0 )
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, m_bEncryption( false )
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, m_bPadding( false )
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, m_bW3CPadding( false )
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, m_nConverted( 0 )
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, m_bDisposed( false )
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, m_bBroken( false )
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{}
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public:
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virtual ~OCipherContext() override
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{
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Dispose();
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}
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static css::uno::Reference< css::xml::crypto::XCipherContext > Create( CK_MECHANISM_TYPE nNSSCipherID, const css::uno::Sequence< ::sal_Int8 >& aKey, const css::uno::Sequence< ::sal_Int8 >& aInitializationVector, bool bEncryption, bool bW3CPadding );
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// XCipherContext
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virtual css::uno::Sequence< ::sal_Int8 > SAL_CALL convertWithCipherContext( const css::uno::Sequence< ::sal_Int8 >& aData ) override;
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virtual css::uno::Sequence< ::sal_Int8 > SAL_CALL finalizeCipherContextAndDispose( ) override;
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};
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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