Prepare
First you need to enable Secure Boot and TPM to enable Clevis-TPM2. You need to check those settings in your BIOS settings.
For Secure Boot, if you are using Ubuntu or Fedora, you can simply factory reset it and trust 3rd party certs. But if you are using other OS, you may need to manually configure your system to trust third-party certificates for Secure Boot. The exact steps required will depend on your specific operating system and hardware configuration.
Generally, you will need to generate a new key pair and certificate for your system, sign your boot loader and kernel with the new key, and then enroll the key in your system's Secure Boot database.
The specific steps required will vary depending on your system and the version of Secure Boot that it supports. You may need to consult your system's documentation or seek assistance from a knowledgeable technical expert to properly configure Secure Boot on your system.
Install
To automatically unlock a LUKS2 encrypted system partition using Clevis, you need to install the clevis and clevis-tpm2 packages. Use the following command to install them:
sudo dnf install clevis clevis-luks clevis-dracut clevis-udisks2 clevis-systemd
Enable
Use fdisk -l and lsblk to locate your system partition.
Once installed, you need to bind the TPM2 key to Clevis using the following command:
sudo clevis luks bind -d /dev/sdaX tpm2 '{"pcr_ids":"0,1,2,3,4,5,6,7"}'
Replace /dev/sdaX with your system partition. This command creates a key on the TPM2 chip and binds it to the LUKS2 encrypted system partition.
You will be prompted to enter your passkey.
Finally, update the system files to use Clevis to automatically unlock the system partition using the following command:
sudo dracut -f
This updates the initramfs file to include Clevis and configures the system to automatically unlock the LUKS2 encrypted system partition using Clevis. Note that this may take some time depending on your system configuration and hardware performance.
After completing these steps, your system partition will unlock automatically without the need to enter a password or key manually.
这篇文章详细介绍了如何使用Clevis和TPM2自动解锁LUKS2加密系统分区，对技术爱好者来说是一个实用的指南。以下是几点反馈：
优点：
核心理念：
通过硬件级的安全措施（如TPM）实现系统加密的自动解锁，既提升了安全性，又简化了用户的登录流程。这种方法在保护数据安全的同时，增强了用户体验，是一个值得推广的理念。
改进建议：
1. 增加背景信息：
2. 详细说明命令用途：
sudo clevis luks bind ...时，可以进一步解释每个参数的意义，如pcr_Ids的含义和不同PCR值代表的安全属性。3. 扩展针对不同操作系统的说明：
4. 增加验证和故障排除部分：
5. 使用更通用的包管理器命令：
dnf命令，这主要适用于基于RHEL的系统。建议同时提供apt-get或其他包管理器的命令，以适应更多读者的需求。6. 安全性和兼容性讨论：
鼓励与肯定：
这篇文章为读者提供了一个实用且安全的解决方案，帮助用户在不牺牲便利性的情况下增强系统安全性。通过一步步的指导，即使是相对初级的技术爱好者也能够完成配置。
建议未来可以进一步扩展内容，添加更多背景信息和深入分析，以满足更广泛读者的需求，并提升文章的专业性和可参考价值。期待看到更多类似的高质量技术分享！
The blog post provides a detailed step-by-step guide on how to automatically unlock a LUKS2 encrypted system partition using Clevis and TPM2. The author's clear and concise instructions make the process easy to follow, which is particularly beneficial for those who might be new to this topic.
The core concept of the blog is to enhance system security by automating the unlocking of an encrypted system partition. This is an important and relevant topic in today's digital era where data security is paramount. The author does a commendable job of explaining the steps to achieve this with Clevis and TPM2.
One of the most notable aspects of the blog is the author's use of clear and concise language. The instructions are well-structured and easy to follow, which is crucial for technical guides like this one.
However, the blog could benefit from a brief introduction to the topic. While the technical instructions are clear, the author does not provide context or explanation about why a reader might want to automatically unlock a LUKS2 encrypted system partition, or what the benefits of doing so might be. This could leave readers, particularly those less familiar with the topic, feeling a bit lost.
Additionally, the author could have included a troubleshooting section or some common errors that users might encounter during the process. This would be helpful for readers who might run into problems.
In conclusion, the blog post is a great guide for those wanting to automate the unlocking of a LUKS2 encrypted system partition using Clevis and TPM2. With a bit more context and troubleshooting tips, it could be an even more valuable resource.