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58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_quota_NSSCipherStrategy_h
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#define mozilla_dom_quota_NSSCipherStrategy_h
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#include "CipherStrategy.h"
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#include <cstddef>
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#include <cstdint>
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#include "mozilla/InitializedOnce.h"
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#include "mozilla/Result.h"
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#include "mozilla/Span.h"
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#include "ErrorList.h"
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#include "nsTArray.h"
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#include "ScopedNSSTypes.h"
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#include <array>
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namespace mozilla::dom::quota {
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struct NSSCipherStrategy {
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// Use numeric literals here to avoid having to include NSS headers here.
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// static_assert's in the cpp file check their consistency.
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using KeyType = std::array<uint8_t, 32>;
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static constexpr size_t BlockPrefixLength = 32;
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static constexpr size_t BasicBlockSize = 16;
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static Result<KeyType, nsresult> GenerateKey();
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nsresult Init(CipherMode aCipherMode, Span<const uint8_t> aKey,
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Span<const uint8_t> aInitialIv = Span<const uint8_t>{});
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nsresult Cipher(Span<uint8_t> aIv, Span<const uint8_t> aIn,
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Span<uint8_t> aOut);
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static std::array<uint8_t, BlockPrefixLength> MakeBlockPrefix();
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static Span<const uint8_t> SerializeKey(const KeyType& aKey);
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static Maybe<KeyType> DeserializeKey(
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const Span<const uint8_t>& aSerializedKey);
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private:
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// XXX Remove EarlyDestructible, remove moving of the CipherStrategy.
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LazyInitializedOnceEarlyDestructible<const CipherMode> mMode;
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LazyInitializedOnceEarlyDestructible<const UniquePK11Context> mPK11Context;
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nsTArray<uint8_t> mIv;
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};
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} // namespace mozilla::dom::quota
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#endif
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