What does tboot mean in linux

Tboot in Linux is a secure boot technology used to protect computer systems from malware and unauthorized changes. TBoot achieves secure boot in the following ways: 1. During the system startup process Measure and record the integrity of the boot loader and operating system kernel; 2. Use the trusted platform module in the computer hardware to verify the integrity and authenticity of the boot environment; 3. Communicate with the remote server and send the measurement results to the server authenticating.

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

In Linux, TBoot (Trusted Boot) is a secure boot technology used to protect computer systems from malware and unauthorized changes. TBoot is based on the implementation of the Trusted Computing Group (TCG) specification and ensures the security of the system by verifying and measuring the integrity and credibility of the boot environment.

TBoot implements secure boot in the following ways:

1. Startup environment measurement: TBoot will measure and record the boot loader (Boot Loader) and operations during the system startup process System kernel integrity. It will save these measurement results in special secure storage areas called PCRs (Platform Configuration Registers).

2. Hardware certification: TBoot uses the Trusted Platform Module (TPM) in computer hardware to verify the integrity and authenticity of the boot environment. The TPM is a security chip integrated into the computer motherboard that stores encryption keys and security policies and provides security functions such as measuring, storing and verifying data.

3. Remote verification: TBoot can communicate with the remote server and send the measurement results to the server for verification. A remote server can analyze the measurements and verify the integrity of the system. This helps detect any unauthorized changes or the presence of malware.

By using TBoot, administrators can ensure that the system has not been tampered with during boot and matches the expected configuration on the remote server. This helps prevent malware and attackers from performing untrusted operations at system startup, increasing the security and trustworthiness of your system.

It is worth noting that TBoot requires the support of hardware and related drivers that support TPM technology. Therefore, to use TBoot, you need to ensure that the computer hardware and firmware support TPM and that the corresponding functions are correctly configured and enabled.

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