Looking for ed25519 code

[Garfield]

Hi all.

I'm looking for an implementation for ed25519 sign/verify (crossplatform), but find nothing about it.

I found only for C, C#, vb6 and other languages.

Did someone adapted it without using 3rd party libs and would share it?

C#: https://github.com/CodesInChaos/Chaos.NaCl
C: https://github.com/orlp/ed25519
Javascript: https://github.com/Cyphrme/Ed25519Too
VB6: https://gist.github.com/wqweto/f7d63723 ... 27370fd4f6

[NicTheQuick]

Why do you want to reimplement it? Just use the existing libraries that come pre-installed on the operating system.

[idle]

Pb implementation here
https://www.purebasic.fr/english/viewto ... 54#p420554

[Garfield]

Hi idle, thank you for pointing me to your thread.

I thought there are differences in curve and keys between ed25519 (edwards) used for sign/verify messages) and curve25519 used for message encrypt/decrypt?

[idle]

I missed the Ed part I read it as ec25519, dyslexia does that.

[Garfield]

I found this paper for differences and converting ed points to ec points.

https://billatnapier.medium.com/the-con ... for%20ECDH

https://www.youtube.com/watch?v=rPIpiH3X138

It sounds a bit complicated for me, but maybe your code can be very usefull for it.

[idle]

I don't have time to add it but you could use libretls 3.9.2 I'm not sure when it was added but it's only fairly recent.