- 专利标题: Method and apparatus to generate zero content over garbage data when encryption parameters are changed
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申请号: US16876365申请日: 2020-05-18
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公开(公告)号: US11416417B2公开(公告)日: 2022-08-16
- 发明人: Darin Edward Gerhart , Cory Lappi , Daniel Robert Lipps , William Jared Walker
- 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: Vierra Magen Marcus LLP
- 主分类号: G06F21/60
- IPC分类号: G06F21/60 ; G06F12/14 ; G09C1/00 ; H04L9/08 ; G06F21/00 ; G06F21/62
摘要:
A method is provided that includes reading data in a storage medium, detecting, during the reading of the data in the storage medium, by a controller a change in an encryption/decryption scheme used to read and write the data in the storage medium, in response to detecting the change in encryption/decryption scheme in the data, causing, by the controller, a logical block address to return an indication of being written in zeros when a physical block address associated with the logical block address encrypted using an first encryption/decryption scheme, and causing, by the controller, a write channel to write zeroes using a second encryption/decryption scheme to the physical block address.
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