/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* 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 mozilla_dom_quota_NSSCipherStrategy_h #define mozilla_dom_quota_NSSCipherStrategy_h #include "CipherStrategy.h" #include <cstddef> #include <cstdint> #include "mozilla/InitializedOnce.h" #include "mozilla/Result.h" #include "mozilla/Span.h" #include "ErrorList.h" #include "nsTArray.h" #include "ScopedNSSTypes.h" #include <array> namespace mozilla::dom::quota { struct NSSCipherStrategy { // Use numeric literals here to avoid having to include NSS headers here. // static_assert's in the cpp file check their consistency. using KeyType = std::array<uint8_t, 32>; static constexpr size_t BlockPrefixLength = 32; static constexpr size_t BasicBlockSize = 16; static Result<KeyType, nsresult> GenerateKey(); nsresult Init(CipherMode aCipherMode, Span<const uint8_t> aKey, Span<const uint8_t> aInitialIv = Span<const uint8_t>{}); nsresult Cipher(Span<uint8_t> aIv, Span<const uint8_t> aIn, Span<uint8_t> aOut); static std::array<uint8_t, BlockPrefixLength> MakeBlockPrefix(); static Span<const uint8_t> SerializeKey(const KeyType& aKey); static Maybe<KeyType> DeserializeKey( const Span<const uint8_t>& aSerializedKey); private: // XXX Remove EarlyDestructible, remove moving of the CipherStrategy. LazyInitializedOnceEarlyDestructible<const CipherMode> mMode; LazyInitializedOnceEarlyDestructible<const UniquePK11Context> mPK11Context; nsTArray<uint8_t> mIv; }; } // namespace mozilla::dom::quota #endif