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Diffstat (limited to 'include/oox/crypto/AgileEngine.hxx')
-rw-r--r-- | include/oox/crypto/AgileEngine.hxx | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/include/oox/crypto/AgileEngine.hxx b/include/oox/crypto/AgileEngine.hxx new file mode 100644 index 0000000000..07ce3cb5ee --- /dev/null +++ b/include/oox/crypto/AgileEngine.hxx @@ -0,0 +1,148 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + */ + +#ifndef INCLUDED_OOX_CRYPTO_AGILEENGINE_HXX +#define INCLUDED_OOX_CRYPTO_AGILEENGINE_HXX + +#include <vector> + +#include <oox/dllapi.h> +#include <oox/crypto/CryptTools.hxx> +#include <oox/crypto/CryptoEngine.hxx> +#include <rtl/ustring.hxx> +#include <sal/types.h> + +namespace oox { + class BinaryXInputStream; + class BinaryXOutputStream; +} + +namespace oox::crypto { + +struct OOX_DLLPUBLIC AgileEncryptionInfo +{ + sal_Int32 spinCount; + sal_Int32 saltSize; + sal_Int32 keyBits; + sal_Int32 hashSize; + sal_Int32 blockSize; + + OUString cipherAlgorithm; + OUString cipherChaining; + OUString hashAlgorithm; + + std::vector<sal_uInt8> keyDataSalt; + + // Key Encryptor + std::vector<sal_uInt8> saltValue; + std::vector<sal_uInt8> encryptedVerifierHashInput; + std::vector<sal_uInt8> encryptedVerifierHashValue; + std::vector<sal_uInt8> encryptedKeyValue; + + // HMAC + std::vector<sal_uInt8> hmacKey; + std::vector<sal_uInt8> hmacHash; + std::vector<sal_uInt8> hmacCalculatedHash; + std::vector<sal_uInt8> hmacEncryptedKey; // encrypted Key + std::vector<sal_uInt8> hmacEncryptedValue; // encrypted Hash +}; + +struct OOX_DLLPUBLIC AgileEncryptionParameters +{ + sal_Int32 spinCount; + sal_Int32 saltSize; + sal_Int32 keyBits; + sal_Int32 hashSize; + sal_Int32 blockSize; + + OUString cipherAlgorithm; + OUString cipherChaining; + OUString hashAlgorithm; +}; + +enum class AgileEncryptionPreset +{ + AES_128_SHA1, + AES_128_SHA384, + AES_256_SHA512, +}; + +class OOX_DLLPUBLIC AgileEngine final : public CryptoEngine +{ +private: + AgileEncryptionInfo mInfo; + AgileEncryptionPreset meEncryptionPreset; + + void calculateHashFinal(const OUString& rPassword, std::vector<sal_uInt8>& aHashFinal); + + void calculateBlock( + std::vector<sal_uInt8> const & rBlock, + std::vector<sal_uInt8>& rHashFinal, + std::vector<sal_uInt8>& rInput, + std::vector<sal_uInt8>& rOutput); + + void encryptBlock( + std::vector<sal_uInt8> const & rBlock, + std::vector<sal_uInt8>& rHashFinal, + std::vector<sal_uInt8>& rInput, + std::vector<sal_uInt8>& rOutput); + + static Crypto::CryptoType cryptoType(const AgileEncryptionInfo& rInfo); + +public: + AgileEngine(); + + AgileEncryptionInfo& getInfo() { return mInfo;} + + void setPreset(AgileEncryptionPreset ePreset) + { + meEncryptionPreset = ePreset; + } + + // Decryption + + void decryptEncryptionKey(OUString const & rPassword); + bool decryptAndCheckVerifierHash(OUString const & rPassword); + + bool generateEncryptionKey(OUString const & rPassword) override; + bool readEncryptionInfo(css::uno::Reference<css::io::XInputStream> & rxInputStream) override; + bool decrypt(BinaryXInputStream& aInputStream, + BinaryXOutputStream& aOutputStream) override; + + bool checkDataIntegrity() override; + + bool decryptHmacKey(); + bool decryptHmacValue(); + + // Encryption + + void writeEncryptionInfo(BinaryXOutputStream& rStream) override; + + void encrypt(const css::uno::Reference<css::io::XInputStream>& rxInputStream, + css::uno::Reference<css::io::XOutputStream>& rxOutputStream, + sal_uInt32 nSize) override; + + bool setupEncryption(OUString const & rPassword) override; + + bool generateAndEncryptVerifierHash(OUString const & rPassword); + + bool encryptHmacKey(); + bool encryptHmacValue(); + + bool encryptEncryptionKey(OUString const & rPassword); + void setupEncryptionParameters(AgileEncryptionParameters const & rAgileEncryptionParameters); + bool setupEncryptionKey(OUString const & rPassword); +}; + +} // namespace oox::crypto + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |