Ed25519 Spec

[yandi-banyu]

So, I was changing the cryptographic module used to that of noble cryptography and modernizing some other thing. However, as I was changing the test I noticed that the Ed25519 secret key output length of noble is 32-byte. In the docs, it is mentioned that PASETO demand Ed25519 secret which are NOT 64 bytes long (See his point 4). So this is just implementation detail. I think it is better to explain that in the docs so there are no misunderstanding regarding the choice there.

P.S. : It seems like this issue has persisted from before too

[miunau]

Thanks for bringing this up. Did you find that tests did not pass with the 32-byte key?

[yandi-banyu]

Yes, hence why I bring up this issue. Although I forgot which test fails since its been a while.

[miunau]

Thanks, I will clear up the docs. I forgot where in the spec the 64 byte key is defined as required but will dig that up.

[yandi-banyu]

Hi, I just noticed there's an update to this library so I just got back from reworking my changes. Coming back to it I can see now that it was this test that needs to be changed. Currently I just assert it to strictly 32 byte, but other implementation may use the 64 byte.