WSCA / SECDSA educational lab
Copyright 2026 the WSCA lab contributors

This product includes software developed for studying the HSM-based EUDI
wallet design described in:

  Eric R. Verheul — An HSM-based EUDI wallet using Split-ECDSA (SECDSA)
  https://wellet.nl/SECDSA-EUDI-wallet-latest.pdf

The paper states that SECDSA is subject to patents.

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IMPORTANT — PATENTS ARE SEPARATE FROM THIS COPYRIGHT LICENSE
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The Apache License 2.0 in LICENSE covers copyright in *this repository's
source code* (and patent claims of *contributors to this repository* on
their own Contributions, as described in Apache-2.0 §3).

That license does **NOT**:

  • grant any license under Split-ECDSA (SECDSA) patents or related patents
    owned by Eric R. Verheul, Key Controls, or any other third party;
  • authorize commercial production use of SECDSA;
  • constitute legal advice or a freedom-to-operate opinion.

If you intend to use SECDSA in a product, pilot, or commercial service,
obtain advice from qualified counsel and contact the patent rights holders
about licensing. Do not assume that open-source availability of this code
implies patent clearance.

See USAGE.md for permitted and non-permitted uses of this project.