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UOS 安全启动

bios 启动

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uefi 启动

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efibootmanager 这个工具可以修改启动项。

系统启动

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开源固件

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把 shim 提交绐微软,微软绐其它厂商提供签名。

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昆仑,百敖,华为。

都封装成 PE 结构的列表,只要有一个验证通过就是可信的。这是一种保护安全性的手段。

shim-signed 这个包有一个我们自己的签名。

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TPM 是可信安全模块的意思,这个是芯片。变化太快,越来越多的系统服务,使得很难做到这个可信启动。做了 grub 的摘要值,TPM 做了。磁盘加密相关的。还有一个 TCM ,和 TPM 类似。