Security researcher Remy demonstrates how users can store SSH private keys directly on a computer's Trusted Platform Module to prevent unauthorized access and protect against malware-based credential theft.

Key Points

• The Trusted Platform Module (TPM) acts as a hardware-based vault that prevents private keys from being exported or stored in vulnerable system memory.
• Storing keys on a TPM provides a higher security baseline than keeping them on a standard hard drive, though it remains tied to the physical motherboard.
• BIOS updates on some computer models may wipe TPM data, requiring users to implement specific workarounds to maintain key persistence.
• The process is incompatible with the Windows Subsystem for Linux but offers a straightforward alternative for standard Windows environments.

Why it Matters

Moving SSH keys to a TPM significantly reduces the risk of credential theft by ensuring sensitive data never touches the file system. This practice provides a practical security upgrade for standard PCs without requiring the purchase of external hardware security tokens.