This was included in the lightningnetwork/lightning-rfc#105 update
to the test vectors, and it's a good idea. Takes a bit of work to
calculate (particularly, being aware of rounding issues).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
aka "BOLT 3: Use revocation key hash rather than revocation key",
which builds on top of lightningnetwork/lightning-rfc#105 "BOLT 2,3,5:
Make htlc outputs of the commitment tx spendable with revocation key".
This affects callers, since they now need to hand us the revocation
pubkey, but commit_tx has that already anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
All the daemons will use a common seed for point derivation, so drag
it out of lightningd/opening.
This also provide a nice struct wrapper to reduce argument count.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is a bit tricky: for our signing code, we don't want scriptsigs,
but to calculate the txid, we need them. For most transactions in lightning,
they're pure segwit so it doesn't matter, but funding transactions can
have P2SH-wrapped P2WPKH inputs.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
built_utxos needs to calculate fees for figuring out how many utxos to
use, so fix that logic and rely on it.
We make build_utxos return a pointer array, so funding_tx can simply hand
that to permute_inputs.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Only minor changes, but I add some more spec text to
lightningd/test/run-commit_tx.c to be sure to catch if it changes
again.
One reference isn't upstream yet, so had to be commented out.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The signing helper was really just for testing, so remove it. But
turn the funding_tx() function into a useful one by making it take the
utxo array.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Raw crypto_state is what we send across the wire: the peer one is for
use in async crypto io routines (peer_read_message/peer_write_message).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This object is basically the embodyment of BOLT #2. Each HTLC already
knows its own state; this moves them between states and keeps them
consistent.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's currently written to produce "local" commit-txs, but of course we
need to produce remote ones too, for signing.
Thus instead of using "remote" and "local" we use "other" and "self",
and indicate with a single "side" flag which we're generating (because
that changes how HTLCs are interpreted).
This also adds to the tests: generate the remote view of the commit_tx
and make sure it matches!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We were using the remote per_commitment_point instead of the local
per_commitment_point to generate the remotekey for the local transaction.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We can't run them in parallel, but we can at least have 'make check'
run them all.
Developers should be running "make check-source && make check".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
These use the same infrastructure as the daemon/test blackbox tests,
so they're not currently wired into make check; use make
"lightningd-blackbox-tests".
Rusty Russell