implement signing and verifying for eddsa-ed25519-sha256

[poolpOrg]

The following PR implements eddsa-ed25519-sha256 signing and verifying

[jbowes]

Thanks for the PR!

Is ed25519 in use somewhere with sha256? I see that ed25519 was added to the spec, but with no hash function pre-applied.

Would you be interested in updating the PR to match the spec? or alternatively, point me at uses of the algos as used in the pr?

[poolpOrg]

hello, sorry for the delay in my answer.

Is ed25519 in use somewhere with sha256? I see that ed25519 was added to the spec, but with no hash function pre-applied.

Indeed, you are right

Would you be interested in updating the PR to match the spec? or alternatively, point me at uses of the algos as used in the pr?

Sure, I will have a look at it this week, cheers

[poolpOrg]

I'm very sorry, I got carried away at work + holidays, I had a look but didn't move forward.

I'll be working back at it in a week as I have a use-case at work pop-up again and might as well contribute upstream :-)

Cheers