Firmware security key upgrade algorithm
    4.
    发明授权
    Firmware security key upgrade algorithm 有权
    固件安全密钥升级算法

    公开(公告)号:US08200988B2

    公开(公告)日:2012-06-12

    申请号:US09922041

    申请日:2001-08-03

    IPC分类号: G06F12/14 H04L9/00

    CPC分类号: G06F21/572

    摘要: A portion of a firmware program may be automatically upgraded during power on of a processor-based system. A firmware upgrade file signed by a private key is authenticated using a public key accessible to the firmware program. The authentication and upgrade is performed automatically. Interrupted upgrades are anticipated and resolved by the firmware program. The public key is duplicated and is itself upgradable, in case the private key changes. The firmware program may be locked to prevent both viewing and unauthorized upgrades of the public keys or other parts of the firmware program.

    摘要翻译: 在基于处理器的系统的上电期间,固件程序的一部分可以被自动升级。 由私钥签名的固件升级文件使用固件程序可访问的公钥进行身份验证。 自动执行认证和升级。 中断升级预计将由固件程序解决。 公钥是重复的,并且本身可升级,以防私钥更改。 固件程序可能被锁定,以防止查看和未经授权的升级公钥或固件程序的其他部分。