发明名称 |
Methods, systems and computer program products for secure firmware updates |
摘要 |
Methods, systems and computer program products which provide secure updates of firmware (i.e. data stored in a programmable memory device of a processing system) are disclosed. Updates of a programmable memory of a device may be controlled by providing an update window of finite duration during which the programmable memory may be updated. Access to the programmable memory may be based on the state of an access latch. The access latch may be set to allow access after a hardware reset of the device. An update control program may be executed to control access to the programmable memory and the latch reset to prevent access upon completion of the update control program. Verification of the update may be provided through encryption techniques and rules incorporated in certificates for application of updates to provide for selectively updating devices. Also disclosed are methods of securely providing differing functionality to generic devices.
|
申请公布号 |
US7069452(B1) |
申请公布日期 |
2006.06.27 |
申请号 |
US20000614982 |
申请日期 |
2000.07.12 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
HIND JOHN R.;PETERS MARCIA LAMBERT |
分类号 |
G06F17/00 |
主分类号 |
G06F17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|