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From: Yanteng Si <si.yanteng@linux.dev>
To: Shuo Zhao <zhaoshuo@cqsoftware.com.cn>, alexs@kernel.org, corbet@lwn.net
Cc: dzm91@hust.edu.cn, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] docs/zh_CN: Add secrets coco Chinese translation
Date: Mon, 13 Oct 2025 10:34:37 +0800	[thread overview]
Message-ID: <677a2dc3-9838-4a79-9b7a-888a81c7d4e7@linux.dev> (raw)
In-Reply-To: <20251010054905.602278-1-zhaoshuo@cqsoftware.com.cn>


在 2025/10/10 下午1:49, Shuo Zhao 写道:
> Translate .../security/secrets/coco.rst into Chinese.
>
> Update the translation through commit d56b699d76d1
> ("Documentation: Fix typos").
>
> Signed-off-by: Shuo Zhao <zhaoshuo@cqsoftware.com.cn>
> ---
>   .../zh_CN/security/secrets/coco.rst           | 96 +++++++++++++++++++
>   .../zh_CN/security/secrets/index.rst          |  9 +-
>   2 files changed, 99 insertions(+), 6 deletions(-)
>   create mode 100644 Documentation/translations/zh_CN/security/secrets/coco.rst
>
> diff --git a/Documentation/translations/zh_CN/security/secrets/coco.rst b/Documentation/translations/zh_CN/security/secrets/coco.rst
> new file mode 100644
> index 000000000000..057a8fdf1e3b
> --- /dev/null
> +++ b/Documentation/translations/zh_CN/security/secrets/coco.rst
> @@ -0,0 +1,96 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +.. include:: ../../disclaimer-zh_CN.rst
> +
> +:Original: Documentation/security/secrets/coco.rst
> +
> +:翻译:
> +
> + 赵硕 Shuo Zhao <zhaoshuo@cqsoftware.com.cn>
> +
> +============
> +机密计算密钥
> +============
> +
> +本文档介绍了在EFI驱动程序和efi_secret内核模块中,机密计算密钥从固件
> +到操作系统的注入处理流程。
> +
> +简介
> +====
> +
> +机密计算硬件(如AMD SEV,Secure Encrypted Virtualization)允许虚拟机
> +所有者将密钥注入虚拟机(VM)内存,且主机/虚拟机监控程序无法读取这些密
> +钥。在SEV中,密钥注入需在虚拟机启动流程的早期阶段(客户机开始运行前)
> +执行。
> +
> +efi_secret内核模块允许用户空间应用程序通过securityfs(安全文件系统)访
> +问这些密钥。
> +
> +密钥数据流
> +==========
> +
> +客户机固件可能会为密钥注入预留一块指定的内存区域,并将该区域的位置(基准
> +客户机物理地址GPA和长度)在EFI配置表中,通过 ``LINUX_EFI_COCO_SECRET_AREA_GUID``
> +条目(对应的GUID值为 ``adf956ad-e98c-484c-ae11-b51c7d336447`` )的形式发布。
> +固件应将此内存区域标记为 ``EFI_RESERVED_TYPE`` ,因此内核不应将其用于自身用途。
> +
> +虚拟机启动过程中,虚拟机管理器可向该区域注入密钥。在AMD SEV和SEV-ES中,此
> +操作通过 ``KVM_SEV_LAUNCH_SECRET`` 命令执行(参见 [sev]_ )。注入的“客户机
> +所有者密钥数据”应采用带GUID的密钥值表结构,其二进制格式在 ``drivers/virt/
> +coco/efi_secret/efi_secret.c`` 文件的EFI密钥区域结构部分中有详细描述。
> +
> +内核启动时,内核的EFI驱动程序将保存密钥区域位置(来自EFI配置表)到 ``efi.coco_secret``
> +字段。随后,它会检查密钥区域是否已填充:映射该区域并检查其内容是否以
> +``EFI_SECRET_TABLE_HEADER_GUID`` (对应的GUID为 ``1e74f542-71dd-4d66-963e-ef4287ff173b`` )
> +开头。如果密钥区域已填充,EFI驱动程序将自动加载efi_secret内核模块,并通过securityfs将密钥
> +暴露给用户空间应用程序。efi_secret文件系统接口的详细信息请参考 [secrets-coco-abi]_ 。
> +
> +
> +应用使用示例
> +============
> +
> +假设客户机需要对加密文件进行计算处理。客户机所有者通过密钥注入机制提供解密密钥
> +(即密钥)。客户机应用程序从efi_secret文件系统读取该密钥,然后将文件解密到内存中,
> +接着对内容进行需要的计算。
> +
> +在此示例中,主机无法从磁盘镜像中读取文件,因为文件是加密的;主机无法读取解密密钥,
> +因为它是通过密钥注入机制(即安全通道)传递的;主机也无法读取内存中的解密内容,因为
> +这是一个机密型(内存加密)客户机。
> +
> +以下是一个简单的示例,展示了在客户机中使用efi_secret模块的过程,在启动时注入了
> +一个包含4个密钥的EFI密钥区域::
> +
> +        # ls -la /sys/kernel/security/secrets/coco
> +        total 0
> +        drwxr-xr-x 2 root root 0 Jun 28 11:54 .
> +        drwxr-xr-x 3 root root 0 Jun 28 11:54 ..
> +        -r--r----- 1 root root 0 Jun 28 11:54 736870e5-84f0-4973-92ec-06879ce3da0b
> +        -r--r----- 1 root root 0 Jun 28 11:54 83c83f7f-1356-4975-8b7e-d3a0b54312c6
> +        -r--r----- 1 root root 0 Jun 28 11:54 9553f55d-3da2-43ee-ab5d-ff17f78864d2
> +        -r--r----- 1 root root 0 Jun 28 11:54 e6f5a162-d67f-4750-a67c-5d065f2a9910
> +
> +        # hd /sys/kernel/security/secrets/coco/e6f5a162-d67f-4750-a67c-5d065f2a9910
> +        00000000  74 68 65 73 65 2d 61 72  65 2d 74 68 65 2d 6b 61  |these-are-the-ka|
> +        00000010  74 61 2d 73 65 63 72 65  74 73 00 01 02 03 04 05  |ta-secrets......|
> +        00000020  06 07                                             |..|
> +        00000022
> +
> +        # rm /sys/kernel/security/secrets/coco/e6f5a162-d67f-4750-a67c-5d065f2a9910
> +
> +        # ls -la /sys/kernel/security/secrets/coco
> +        total 0
> +        drwxr-xr-x 2 root root 0 Jun 28 11:55 .
> +        drwxr-xr-x 3 root root 0 Jun 28 11:54 ..
> +        -r--r----- 1 root root 0 Jun 28 11:54 736870e5-84f0-4973-92ec-06879ce3da0b
> +        -r--r----- 1 root root 0 Jun 28 11:54 83c83f7f-1356-4975-8b7e-d3a0b54312c6
> +        -r--r----- 1 root root 0 Jun 28 11:54 9553f55d-3da2-43ee-ab5d-ff17f78864d2
> +
> +
> +参考文献
> +========
> +
> +请参见 [sev-api-spec]_ 以获取有关SEV ``LAUNCH_SECRET`` 操作的更多信息。
> +

> +[sev] Documentation/virt/kvm/x86/amd-memory-encryption.rst
> +[secrets-coco-abi] Documentation/ABI/testing/securityfs-secrets-coco
> +[sev-api-spec] https://www.amd.com/system/files/TechDocs/55766_SEV-KM_API_Specification.pdf

sev_CN will not introduce build warning.


Thanks,

Yanteng

> +
> diff --git a/Documentation/translations/zh_CN/security/secrets/index.rst b/Documentation/translations/zh_CN/security/secrets/index.rst
> index 5ea78713f10e..38464dcb2c3c 100644
> --- a/Documentation/translations/zh_CN/security/secrets/index.rst
> +++ b/Documentation/translations/zh_CN/security/secrets/index.rst
> @@ -5,13 +5,10 @@
>   
>   :翻译:
>   
> -=====================
> +========
>   密钥文档
> -=====================
> +========
>   
>   .. toctree::
>   
> -
> -TODOLIST:
> -
> -* coco
> +   coco

  reply	other threads:[~2025-10-13  2:34 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-10  5:49 [PATCH] docs/zh_CN: Add secrets coco Chinese translation Shuo Zhao
2025-10-13  2:34 ` Yanteng Si [this message]
2025-10-13  2:43   ` zhaoshuo

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