Simon Willison’s Weblog

1st March 2007 - Link Blog

The Beauty Of The Diffie-Hellman Protocol. Some useful explanations here. Diffie-Hellman is used by OpenID to establish a shared secret between the provider and the consumer.

Posted 1st March 2007 at 10:08 pm

Recent articles

A new feature for my blog, built using my voice - 9th October 2026
Claude Haiku 5.5 - 7th October 2026
We're going to need default hard budget caps on pretty much everything - 3rd October 2026
OpenAI DevDay 2026 live blog - 29th September 2026

This is a link post by Simon Willison, posted on 1st March 2007.

cryptography 30 diffiehellman 1 openid 213 reddit 29

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe