EdDSA-rfc-python

This repository provides a python implementation of EdDSA taken directly from RFC 8032, "Edwards-Curve Digital Signature Algorithm (EdDSA)" by S. Josefsson & I. Liusvaara.

RFC 8032 gives python code in Section 6, Appendix A and Appendix B; test vectors are given in Section 7.

The code from Section 6 is for the Ed25519 variant only. You can exercise that code like this:

$ python3 Section-6.py

The code from Appendix A covers all five variants: Ed25519, Ed25519ctx, Ed25519ph, Ed448, Ed448ph.

The code from Appendix B reads a file of Ed25519 test vectors and exercises them against the library code in Appendix A:

$ python3 Appendix-B.py < sign.input

The 21 test vectors given in RFC 8032 are pulled out into the file Section-7.input. To parse those test vectors and exercise them against the library code, the script test-eddsa2.py was created. It can be used like so:

$ python3 test-eddsa2.py < Section-7.input