Sev Attestation

What This Skill Does

The Sev Attestation skill provides a comprehensive suite of tools for performing AMD SEV-SNP (Secure Encrypted Virtualization-Secure Nested Paging) remote attestation. This skill allows users to verify the integrity and identity of a virtual machine instance running on AMD SEV-SNP hardware. By leveraging a structured workflow of scripts, it automates the complex cryptographic process of generating hardware reports, retrieving AMD-signed certificates, and validating the complete chain of trust. It is an essential utility for security engineers and cloud architects who need to ensure that their confidential computing environments have not been tampered with and are running on genuine, secure AMD hardware.

Installation

To integrate this capability into your OpenClaw environment, execute the following command in your terminal: clawhub install openclaw/skills/skills/xinyuwang/sev-attestation

Ensure that you have snpguest, openssl, and curl installed on your host system. Note that this skill requires root privileges to interact with the hardware security module and perform system-level verification tasks.

Use Cases

• Confidential Computing Audits: Use this skill to verify the hardware-backed security state of cloud-based confidential VMs before provisioning sensitive data.
• Zero-Trust Infrastructure: Integrate attestation workflows into your CI/CD pipelines to ensure only verified, secure nodes join your cluster.
• Compliance Reporting: Generate verifiable evidence that your production environment meets specific security standards regarding memory encryption and hardware integrity.

Example Prompts

1. "OpenClaw, please run the full SEV-SNP attestation process and save the results to the /tmp/attestation-output directory."
2. "Can you check if my current environment supports AMD SEV-SNP and explain any missing dependencies?"
3. "Verify the certificate chain for my recent report using the tools provided in the Sev Attestation skill."

Tips & Limitations

• Hardware Dependency: This skill specifically requires AMD EPYC processors that support SEV-SNP. It will not function on Intel or non-SNP AMD hardware.
• Dependency Management: Ensure your snpguest binary is up-to-date, as AMD certificate formats and report structures may change. Always review the references/error-codes.md file if the verification process fails, as it provides detailed mappings for common cryptographic errors and hardware communication timeouts.
• Security Warning: Since this tool interacts directly with kernel-level security features, ensure your environment is isolated and that you only run attestation scripts on machines you trust to have root access. Regularly clean up your generated report files, as they contain sensitive hardware metadata.