Implemnts Adaptor Signatures [1] introduced by Poelstra et al. with ECDSA Adaptor Signatures [2] formalized by Aumayr et al.

• ECDSA Adaptor Signatures [x]

  • pre-signatures [x]
  • pre-verification [x]
  • NIZK proofs for pre-signatures [x]
  • witness extraction [x]
  • signature adaption [x]

• Schnorr Adaptor Signatures [ ]

  • pre-signatures [ ]
  • pre-verification [ ]
  • witness extraction [ ]
  • signature adaption [ ]

This library implements cryptographic primitives, has not been tested by the cryptographic community, has minimal validation tests, and is in the earliest stages of development.

DON'T USE THIS LIBRARY FOR PRODUCTION UNTIL FURTHER TESTING

The above warning will be removed after more thorough testing of this library.

• [1]: https://download.wpsoftware.net/bitcoin/wizardry/mw-slides/2017-05-milan-meetup/slides.pdf
• [2]: https://eprint.iacr.org/2020/476.pdf