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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>I want to implement a function that validates a public key produced by either ed25519 or ed448 – according to the tests in NIST SP 800-186 appendix D.1.3<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There doesn’t appear to be any helper functions to assist in this – at least for Edwards curves.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have implemented something for Weierstrass curves – and have used helper functions to obtain the curve/group, domain parameters, EC_POINT_is_at_infinity() etc etc – but nothing for Edwards.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>All I can see is EVCP_PKEY_new_raw_public_key() and EVCP_PKEY_get_raw_public_key() – and that does really help in what I’m trying to do.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>John<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>