# Key length

> Minimum key sizes, post-quantum migration deadlines and cryptographic control requirements, each traced to its source document. Reviewed 2026-09-21.

Every figure links to the document it comes from and says whether it was checked against that document (primary) or rests on reporting about it (secondary).

## Content

- [Full content as Markdown](https://keylength.goodkey.co/llms-full.txt): key sizes by source, migration deadlines by jurisdiction, the cryptographic requirements matrix, and the FAQ
- [Interactive site](https://keylength.goodkey.co/): the same content with charts

## Open data (CC BY 4.0)

- [Sources](https://keylength.goodkey.co/data/sources.json): every document cited, with status and verification
- [Key sizes](https://keylength.goodkey.co/data/key-sizes.json): minimum sizes per source and validity window
- [Migration timeline](https://keylength.goodkey.co/data/timeline.json): dated milestones per jurisdiction
- [Requirements](https://keylength.goodkey.co/data/requirements.json): control matrix across frameworks
- [Quantum estimates](https://keylength.goodkey.co/data/quantum.json): resource estimates and hardware built
- [Developments](https://keylength.goodkey.co/data/developments.json): dated log of findings and rules
- [FAQ](https://keylength.goodkey.co/data/faq.json)