1/*
2 * Copyright (c) 2024-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15#ifndef SIGNATRUETOOLS_ELF_SIGN_BLOCK_H
16#define SIGNATRUETOOLS_ELF_SIGN_BLOCK_H
17
18#include <vector>
19#include <string>
20
21#include "fs_verity_descriptor_with_sign.h"
22
23namespace OHOS {
24namespace SignatureTools {
25
26class ElfSignBlock {
27public:
28    static constexpr int32_t PAGE_SIZE_4K = 4096;
29    static constexpr int32_t MERKLE_TREE_INLINED = 0x2;
30
31public:
32    ElfSignBlock();
33    ElfSignBlock(int32_t paddingSize, const std::vector<int8_t> &merkleTreeData,
34                 const FsVerityDescriptorWithSign &descriptorWithSign);
35    int32_t Size();
36    std::vector<int8_t>& GetMerkleTreeWithPadding();
37    int64_t GetDataSize();
38    int64_t GetTreeOffset();
39    std::vector<int8_t>& GetSignature();
40    void ToByteArray(std::vector<int8_t>& ret);
41    static bool FromByteArray(std::vector<int8_t>& bytes, ElfSignBlock& elfSignBlock);
42    static int32_t ComputeMerkleTreePaddingLength(int64_t signBlockOffset);
43
44private:
45    int32_t type = MERKLE_TREE_INLINED;
46    int32_t treeLength;
47    std::vector<int8_t> merkleTreeWithPadding;
48    FsVerityDescriptorWithSign descriptorWithSign;
49};
50} // namespace SignatureTools
51} // namespace OHOS
52#endif // SIGNATRUETOOLS_ELF_SIGN_BLOCK_H