Authenticate blinded payment paths (Blinded Paths, Bolt12, Offer)
https://github.com/lightningdevkit/rust-lightning/pull/3435
Host: vincenzopalazzo -
Notes
Questions
- Did you review ldk/3435? Is it a Concept ACK, Approach ACK, Tested ACK, or NACK?
- What problem is this patch solving? Can you provide a user story?
- What is the concept behind the HMAC in LDK? See the [online definition](https://en.wikipedia.org/wiki/HMAC#:~:text=In%20cryptography%2C%20an%20HMAC%20(sometimes,and%20a%20secret%20cryptographic%20key.)
- In commit 7cdcd, why is the struct
ExpandedKey
used? - Does LDK authenticate a keysend payment? If yes, what is the commit that proves it is true?
- When is the
payment_context
Some
? Is it specified when just routing an HTLC and the LDK node is just a middle hop in the path? If yes, why?