51   const std::vector<uint8_t> buffer(size, 0);  in CalculateZeroDigest()
93   std::vector<uint8_t> calculating_hash_block;
116 static std::string VerifyHashtree(int image_fd, uint64_t image_size,  in VerifyHashtree()
117                                   const std::vector<uint8_t> &salt,  in VerifyHashtree()
122                                   const std::vector<uint8_t> &root_digest) {  in VerifyHashtree()
137   std::list<HashtreeLevel> levels;  in VerifyHashtree()
160     for (auto level = std::prev(levels.end()); level != levels.begin();  in VerifyHashtree()
162       std::prev(level)->comparing_tree_offset =  in VerifyHashtree()
167   std::vector<uint8_t> padded_zero_digest(padded_digest_size, 0);  in VerifyHashtree()
173   std::vector<uint8_t> data_block(data_block_size);  in VerifyHashtree()
174   std::vector<uint8_t> tree_block(hash_block_size);  in VerifyHashtree()
187     std::vector<uint8_t> *current_block = &data_block;  in VerifyHashtree()
196       if (std::next(level) == levels.end()) {  in VerifyHashtree()
274 static std::unique_ptr<android::fs_mgr::FsAvbHashtreeDescriptor>
277     std::string *out_system_path) {  in GetSystemHashtreeDescriptor()
300   std::string out_public_key_data;  in GetSystemHashtreeDescriptor()
301   std::string out_avb_partition_name;  in GetSystemHashtreeDescriptor()
302   std::unique_ptr<android::fs_mgr::VBMetaData> vbmeta =  in GetSystemHashtreeDescriptor()
321   std::unique_ptr<android::fs_mgr::FsAvbHashtreeDescriptor> descriptor =  in GetSystemHashtreeDescriptor()
322       android::fs_mgr::GetHashtreeDescriptor("system", std::move(*vbmeta));  in GetSystemHashtreeDescriptor()
335   std::string system_path;  in TEST()
336   std::unique_ptr<android::fs_mgr::FsAvbHashtreeDescriptor> descriptor =  in TEST()
348   const std::string &salt_str = descriptor->salt;  in TEST()
349   const std::string &expected_digest_str = descriptor->root_digest;  in TEST()
354   const std::string hash_algorithm(  in TEST()
358   std::unique_ptr<ShaHasher> hasher = CreateShaHasher(hash_algorithm);  in TEST()
361   std::vector<uint8_t> salt, expected_digest;  in TEST()
374   std::string error_message = VerifyHashtree(  in TEST()
392 static size_t NextWord(const std::string &str, size_t *pos) {  in NextWord()
395   if (start == std::string::npos) {  in NextWord()
399   if (*pos == std::string::npos) {  in NextWord()
410   std::string system_path;  in TEST()
411   std::unique_ptr<android::fs_mgr::FsAvbHashtreeDescriptor> descriptor =  in TEST()
424   std::vector<android::dm::DeviceMapper::TargetInfo> table;  in TEST()
443   std::array<std::string, 10> descriptor_values = {  in TEST()
444       std::to_string(descriptor->dm_verity_version),  in TEST()
447       std::to_string(descriptor->data_block_size),  in TEST()
448       std::to_string(descriptor->hash_block_size),  in TEST()
449       std::to_string(descriptor->image_size /  in TEST()
451       std::to_string(descriptor->image_size /  in TEST()
459   for (const std::string &descriptor_value : descriptor_values) {  in TEST()
461     ASSERT_NE(begin_pos, std::string::npos);  in TEST()
473     ASSERT_NE(begin_pos, std::string::npos);  in TEST()
475         std::stoul(target.data.substr(begin_pos, next_pos - begin_pos));  in TEST()
478   std::set<std::string> opt_params = {  in TEST()
485   std::map<std::string, std::string> opt_fec_params = {  in TEST()
494     ASSERT_NE(begin_pos, std::string::npos);  in TEST()
495     const std::string param_name(target.data, begin_pos, next_pos - begin_pos);  in TEST()
500       ASSERT_NE(begin_pos, std::string::npos);  in TEST()
510             std::to_string(descriptor->fec_num_roots));  in TEST()
513       std::to_string(descriptor->fec_offset / descriptor->data_block_size));  in TEST()
516       std::to_string(descriptor->fec_offset / descriptor->data_block_size));  in TEST()
519   ASSERT_EQ(NextWord(target.data, &next_pos), std::string::npos);  in TEST()
530   std::string partition_name(  in VerifyHashAlgorithm()
569   std::string suffix;  in LoadAndVerifyAvbSlotDataForCurrentSlot()
605   std::unique_ptr<AvbSlotVerifyData, decltype(&avb_slot_verify_data_free)>  in TEST()
610     std::string partition_name = avb_slot_data->vbmeta_images[i].partition_name;  in TEST()
630 static std::optional<std::vector<uint8_t>> GetVbmetaDigestProperty() {  in GetVbmetaDigestProperty()
631   std::string default_value = "not found";  in GetVbmetaDigestProperty()
635     return std::nullopt;  in GetVbmetaDigestProperty()
638   std::vector<uint8_t> vbmeta_digest;  in GetVbmetaDigestProperty()
642     return std::nullopt;  in GetVbmetaDigestProperty()
661   std::vector<uint8_t> digest256(AVB_SHA256_DIGEST_SIZE);  in TEST()
662   std::vector<uint8_t> digest512(AVB_SHA512_DIGEST_SIZE);  in TEST()