| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_DEVICES_BLOCK_DRIVERS_BLOCK_VERITY_CONSTANTS_H_ |
| #define SRC_DEVICES_BLOCK_DRIVERS_BLOCK_VERITY_CONSTANTS_H_ |
| |
| #include <zircon/types.h> |
| |
| namespace block_verity { |
| |
| constexpr size_t kBlockSize = 4096; |
| constexpr size_t kHashOutputSize = 32; |
| |
| // A reasonable static maximum block count of (2 ** 20 - 1). 4GB is a reasonable limit |
| // for now. If we want to bump this, we should carefully defend against integer overflow. |
| constexpr size_t kMaxBlockCount = 0xfffff; |
| |
| // "block-verity-v1\0" |
| constexpr uint8_t kBlockVerityMagic[16] = {0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x2d, 0x76, 0x65, |
| 0x72, 0x69, 0x74, 0x79, 0x2d, 0x76, 0x31, 0x00}; |
| |
| constexpr uint32_t kSHA256HashTag = 1; |
| |
| } // namespace block_verity |
| |
| #endif // SRC_DEVICES_BLOCK_DRIVERS_BLOCK_VERITY_CONSTANTS_H_ |
