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Community & Business Groups

Proposed Group: Passkey Document Signing Community Group

The Passkey Document Signing Community Group has been proposed by Mohammed Zakari:


The mission of this group is to bring legally meaningful, cryptographically verifiable digital signatures to the Web.

Although the Web has historically lacked primitives for digitally signing documents, widespread adoption of passkeys creates new opportunities, while regulatory and market demand for digital signatures continues to grow. For example, a business signing a contract today typically relies on an emailed link and ad hoc identity verification; a citizen seeking a qualified electronic signature under regulations such as eIDAS typically must verify their identity, at cost, with each new signing provider they use.

Prior research found that closing this gap requires no new cryptography: every needed building block already exists, but has not been composed into an open, interoperable whole. This group intends to develop that composition with security as a first-order concern, combining a small number of building blocks into a signing ceremony, an evidence format any third party can verify independently, and a way to express the resulting signature’s legal strength.

The group expects to build on WebAuthn, OpenID4VP/the Digital Credentials API, CAdES/PAdES/JAdES, the CSC API, and RFC 3161 as-is. In particular, the group expects to build upon the signing extension under discussion in the Web Authentication Working Group. The group will not define new cryptography or authenticator behavior.

This group intends to publish one or more Specifications, and may produce supporting test suites, use-case documentation, and other material.


You are invited to support the creation of this group. Once the group has a total of 5 supporters, it will be launched and people can join to begin work. In order to support the group, you will need a W3C account.

Once launched, the group will no longer be listed as “proposed”; it will be in the list of current groups.

If you believe that there is an issue with this group that requires the attention of the W3C staff, please send us email on site-comments@w3.org

Thank you,
W3C Community Development Team

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