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/* 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,
#ifndef DOM_QUOTA_DUMMYRANDOMACCESSCIPHERSTRATEGY_H_
#define DOM_QUOTA_DUMMYRANDOMACCESSCIPHERSTRATEGY_H_
#include <algorithm>
#include <array>
#include <cstddef>
#include <cstdint>
#include "ErrorList.h"
#include "mozilla/Maybe.h"
#include "mozilla/Result.h"
#include "mozilla/Span.h"
namespace mozilla::dom::quota {
struct DummyRandomAccessCipherStrategy {
struct KeyType {};
using BlockNumberType = uint64_t;
static constexpr size_t BlockNonceSize = 12;
static constexpr size_t AuthenticationTagSize = 16;
static Result<KeyType, nsresult> GenerateKey() { return KeyType{}; }
static nsresult Init() { return NS_OK; }
struct EncryptionInput {
const KeyType mMasterKey;
const BlockNumberType mBlockNumber;
Span<uint8_t, BlockNonceSize> mNonce;
Span<const uint8_t> mPlaintext;
Span<const uint8_t> mAad;
};
struct EncryptionOutput {
Span<uint8_t> mCiphertext;
Span<uint8_t, AuthenticationTagSize> mTag;
};
static nsresult Encrypt(const EncryptionInput& aInput,
EncryptionOutput& aOutput) {
std::transform(aInput.mPlaintext.cbegin(), aInput.mPlaintext.cend(),
aOutput.mCiphertext.begin(),
[](const uint8_t byte) { return byte ^ 42; });
std::fill(aOutput.mTag.begin(), aOutput.mTag.end(), 0);
return NS_OK;
}
struct DecryptionInput {
const KeyType mMasterKey;
const BlockNumberType mBlockNumber;
Span<uint8_t, BlockNonceSize> mNonce;
Span<const uint8_t> mCiphertext;
Span<const uint8_t> mAad;
Span<uint8_t, AuthenticationTagSize> mTag;
};
struct DecryptionOutput {
Span<uint8_t> mPlaintext;
};
static nsresult Decrypt(const DecryptionInput& aInput,
DecryptionOutput& aOutput) {
std::transform(aInput.mCiphertext.cbegin(), aInput.mCiphertext.cend(),
aOutput.mPlaintext.begin(),
[](const uint8_t byte) { return byte ^ 42; });
return NS_OK;
}
static std::array<uint8_t, BlockNonceSize> MakeBlockNonce() { return {}; }
static Span<const uint8_t> SerializeKey(const KeyType&) { return {}; }
static Maybe<KeyType> DeserializeKey(Span<const uint8_t>) {
return Some(KeyType{});
}
};
} // namespace mozilla::dom::quota
#endif // DOM_QUOTA_DUMMYRANDOMACCESSCIPHERSTRATEGY_H_