发明授权
US08312534B2 System and method for securely clearing secret data that remain in a computer system memory
有权
用于安全地清除保留在计算机系统存储器中的秘密数据的系统和方法
- 专利标题: System and method for securely clearing secret data that remain in a computer system memory
- 专利标题(中): 用于安全地清除保留在计算机系统存储器中的秘密数据的系统和方法
-
申请号: US12040953申请日: 2008-03-03
-
公开(公告)号: US08312534B2公开(公告)日: 2012-11-13
- 发明人: David Carroll Challener , Daryl Carvis Cromer , Howard Jeffrey Locker , Randall Scott Springfield
- 申请人: David Carroll Challener , Daryl Carvis Cromer , Howard Jeffrey Locker , Randall Scott Springfield
- 申请人地址: SG Singapore
- 专利权人: Lenovo (Singapore) Pte. Ltd.
- 当前专利权人: Lenovo (Singapore) Pte. Ltd.
- 当前专利权人地址: SG Singapore
- 主分类号: G06F21/00
- IPC分类号: G06F21/00 ; G06F17/00 ; G06F17/30 ; G06F15/177
摘要:
A system, method, and program product is provided that initializes a counter maintained in a nonvolatile memory of a security module to an initialization value. The security module receives requests for a secret from requesters. The security module releases the secret to the requesters and the released secrets are stored in memory areas allocated to the requesters. A counter is incremented when the secret is released. Requestors send notifications to the security module indicating that the requestor has removed the secret from the requestor's memory area. The security module decrements the counter each time a notification is received. When the computer system is rebooted, if the counter is not at the initialization value, the system memory is scrubbed erasing any secrets that remain in memory.
公开/授权文献
信息查询