- 专利标题: Fast initialization of secure HMB
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申请号: US17210174申请日: 2021-03-23
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公开(公告)号: US11494097B2公开(公告)日: 2022-11-08
- 发明人: Shay Benisty , Ishai Ilani
- 申请人: Western Digital Technologies, Inc.
- 申请人地址: US CA San Jose
- 专利权人: Western Digital Technologies, Inc.
- 当前专利权人: Western Digital Technologies, Inc.
- 当前专利权人地址: US CA San Jose
- 代理机构: Patterson & Sheridan, LLP
- 代理商 Steven H. VerSteeg
- 主分类号: G06F12/00
- IPC分类号: G06F12/00 ; G06F3/06 ; H04L9/32
摘要:
The present disclosure generally relates to data storage devices and related methods that use secure host memory buffers (HMBs) and low latency operations. A controller of the data storage device is configured to access the HMB, where the HMB stores a Merkle Tree. When the HMB is initialized, the controller determines a number of hash levels of the Merkle Tree. Each hash level of the Merkle Tree comprises one or more hashes. When storing location data in a target data block of the Merkle Tree, the controller is configured to initialize only the hashes along a path between a top hash and the target data block. Each hash along the path has a non-initialized hash coupled to a common hash. The non-initialized hash is programmed with a non-initialized bit, such that only the relevant hashes and data blocks are initialized.
公开/授权文献
- US20220179571A1 Fast Initialization Of Secure HMB 公开/授权日:2022-06-09