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Special Publication 800-63 Digital Identity Guidelines

The finalized four-volume SP 800-63 Digital Identity Guidelines is now available, both in PDF format and online.

The official versions of these documents are the PDFs available at:

This repository, used for development of the SP 800-63 document suite, is available as a resource for those who prefer to view the documents in HTML form or who wish to view the original Markdown.

Because of differences in Markdown rendering engines, the best place to view the HTML is on the NIST Pages website at rather than the GitHub rendering of the documents.

While this is believed to be a faithful representation of the official PDF documents, NIST would appreciate being informed about any inconsistencies that may be found other than minor formatting differences. These may be reported to


Home to public development of NIST Special Publication 800-63-3: Digital Authentication Guidelines


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