Support kdf paths on Keystore

[MegaRedHand]

Context: #1013

ERC-2335 keystores have a path field with a EIP-2333 path for deriving the secret. We should support non-empty values of that field.

[afsanehForsat]

comment

[artemd24]

I'd like to tackle this!

[MegaRedHand]

Sure! Go ahead!

[artemd24]

Hello @MegaRedHand!
I have started this issue, but it's a bit unclear for me, so I have a question about implementation.
Should I make password parameter in decode_str! optional and in case of nil get "secret" from decoded_json["path"] file?

[MegaRedHand]

No. The path attribute is for deriving the secret key. I'm not sure how it works, but once the secret is retrieved you should be able to use secret + path to derive a secret key. There is more info in the EIP linked in the issue.

[Arkenan]

Unassigned (more than 1 month of inactivity)