<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Raymond Mc Creesh</title><description>Engineering notes on Linux systems, AI infrastructure, RAG, and platform security.</description><link>https://raymondmccreesh.dev/</link><language>en-ie</language><item><title>What a TPM Actually Does, and How Linux Uses It to Protect Disk Unlock</title><link>https://raymondmccreesh.dev/</link><guid isPermaLink="true">https://raymondmccreesh.dev/</guid><description>How TPM 2.0, LUKS2, PCRs and measured boot work together to unlock encrypted Linux systems without storing the unlock secret on disk.</description><pubDate>Sun, 30 Aug 2026 00:00:00 GMT</pubDate><category>Linux Boot Security</category><category>tpm</category><category>tpm2</category><category>measured-boot</category><category>linux</category><category>luks</category><category>pcr</category></item></channel></rss>