No code changes, just catching up with the BOLT changes which rework our
blinded path terminology (for the better!).
Another patch will sweep the rest of our internal names, this tries only to
make things compile and fix up the BOLT quotes.
1. Inside payload: current_blinding_point -> current_path_key
2. Inside update_add_htlc TLV: blinding_point -> blinded_path
3. Inside blinded_path: blinding -> first_path_key
4. Inside onion_message: blinding -> path_key.
5. Inside encrypted_data_tlv: next_blinding_override -> next_path_key_override
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. onion-message
2. blinded-payments
3. route-blinding
4. channel-type
5. warnings.
Now they'll be checked correctly, and if the spec changes, we'll know
to reexamine this code.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In particular:
- Bolt 4: add route blinding construction
- Bolt 4: add blinded payments
And this means it's not experimental, so we can turn it on
by default!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: Protocol: blinded payments are now supported by default (not just with `--experimental-onion-messages`)
```
make check-source-bolt CHECK_BOLT_PREFIX="--prefix=BOLT-route-blinding" BOLTVERSION=guilt/offers
```
Other than textual changes, this does:
1. Ensures we put total_amount_msat in onion final hop (reported by @t-bast).
2. Require that they put total_amount_msat in onion final hop.
3. Return `invalid_onion_blinding` exactly as defined by the spec (i.e. less
aggressive when we're the final hop) (also reported by @t-bast, but I already
knew).
See: #5823
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-EXPERIMENTAL: `offers` breaking blinded payments change (total_amount_sat required, Eclair compat)
This makes us match eed2ab0c30ad7f93e3b2641ca9d7ade32f3d121d
("Use `invalid_onion_blinding` everywhere").
1. Numerous typographical changes.
2. Make sure we *always* return WIRE_INVALID_ONION_BLINDING if
we're in a blinded path.
3. Handle p->total_msat correctly (MPP payments).
4. Reorganize blinding handling just like spec order.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Don't shoehorn it into onion_nonfinal_hop() and onion_final_hop(), but
provide an explicit routine "blinded_onion_hops" and an onion helper
"onion_blinded_hop()" for it to call.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
