bolt12: initial support for incoming blinded payment htlcs#10746
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move decryption of recipient_data to process_onion_packet, add handling of blinding in peer msgs, handle properties in ProcessedOnionPacket in case of path blinding, move repeated next blinding key derivation to func lnonion.next_blinding_from_shared_secret() Co-Authored-By: f321x <f@f321x.com>
check encrypted_recipient_data constraints, fail invalid blinded htlcs with INVALID_ONION_BLINDING, reject being the final recipient of a blinded payment for now, maybe_forward_htlc: derive forwarding parameters from payment_relay data, allow next hop lookup by node_id, validate_features: reject unknown odd feature bits in blinded path context Co-Authored-By: f321x <f@f321x.com>
Minor refactor of htlc failure handling to override routing errors with `INVALID_ONION_BLINDING` if they are part of a blinded payment. Also implements random delay at introduction point against probing.
... and lnutil.LN_FEATURES_IMPLEMENTED
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Adds initial support for handling incoming blinded payment htlcs in lnpeer/htlc switch.
lnonion.process_onion_packet()Unittest coverage is lacking, this will be simpler to add to
test_lnpeeronce we can create bolt 12 offers/invoices (similar to the existing tests using bolt11 invoices).Trampoline stays as-is, support for trampoline (forwarding) will follow later on.
I tested this as part of my
bolt12_2branch which is built on top of these commits.Main PR: #10671