a0fc4f8a79
Update .gitignore.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
b72ab56312
test-cli/open-anchor.c: add missing file.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
9534dabf7a
Merge branch 'single-funder'
This effectively removes the escape-transaction dual anchor code in
favor of single-funder anchor.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
f693979384
doc: fix KEY-A typo, add missing delay.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
de051f0df9
protocol: add close fee logic.
The closer proposes the fee. This is simple, at least.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
3260fb2ed1
protocol: add commitment fee logic.
Both sides elect a commitment fee, and the lowest is chosen. That means
you can't game the other side (but if you offer too low, then can error
out of course).
Fees are split 50-50 if possible: originally the whole fee has to be
paid by the (single) funder. Neither side can withdraw funds which
would make them unable to pay fees.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
eac3af06f1
protocol: switch to single-funder anchor model.
Most complex change was gather_updates(), which handles all the "what
is the current state of the channel" logic for our dumb test utils.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
2255cb749d
protocol: move commitment key to open_channel message.
And rename final to final_key to be clearer.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
c4d5a85b4e
protocol: remove tx_version field.
It's trivial to add later as an optional field.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
7fbf3b297a
doc: fix KEY-A typo, add missing delay.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
8f0140c542
script: remove now-unnecessary 2of2 ops.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
f78ea05fc5
test-cli/extract-escape-secret: helper to get escape secret from other side.
When other side uses their escape tx, we extract the secret to we
can use our fast-escape.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
7564e3f475
test-cli/create-secret-spend-tx: more general tool to spend secret-or-delay outputs
Immediately replaces create-commit-spend-tx and create-steal-tx.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
402cd67e10
test-cli/extract-revocation-preimage: helper to get preimage from message
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
2e36affb77
test-cli/get-revocation-secret: new helper.
Give the revocation secret (or hash) for a given index number.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
ebb068e975
Escape transaction support, test tools to create/check them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
ee3af28980
test-cli/txid-of: simple helper to get txid.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
06fe371b3f
protocol: add field so we can specify the escape fee.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
114161a6a5
test-cli/scripts/test.sh: send_after_delay()
Extract and generalize: we're about to get more.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
98d994f930
protocol: add open-complete.
This is where we expose the revocation preimages for the escape
transactions.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
6a5ba591ee
signature: match alpha hashing bug for multiple inputs.
https://github.com/ElementsProject/elements/issues/37
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
c03c878afc
Split into two anchors.
This is a major change; instead of creating a mutual anchor (funding)
transaction, each side creates its own. We use escape transactions in
case anything goes wrong; these will be revoked later.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
1a46334bd7
protocol: remove new anchor ops.
We didn't implement them yet, and they'll need revision anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
11099d738f
script: dual anchor input support.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
aa79887d79
script: use the normalized delay script form for commit output.
As documented in the paper; it's also two bytes shorter, and allows
us to use the exact same script for three cases.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
d053181b0b
script: add standard routines for secret-or-timedelay outputs.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
bde07aa6a7
Makefile: fix make clean, depend on bitcoin/ headers.
Didn't remove program object files, nor depend on all headers.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
465c2b04e8
signature: fix -DDEBUG case, add hash printing.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
8a127ab8a9
doc: clarify wording on section 3.1
StephenM347 on #lightning-dev indicated it could be clearer that
this is all about changing commitment transactions.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
305b8cd27d
doc: switch signatures around in escape and commit input scripts.
Because of the way we form the redeemscripts, it's easier to have it
push B's sig then A's.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
da503c1ee1
doc: simplify anchor output script, fix users.
It's slightly clearer to do the "2" outside the branch.
Also, spending it requires the extra 0 due to OP_CHECKMULTISIG bug.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
8a4246cb36
permute: use BIP69 order.
It's a canonical ordering, rather than a random shuffle. Far simpler.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
d93eee22f5
doc: add figures from LN draft (thanks Joseph!).
Also clean up references to Appendix A.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
73ba5acca9
doc: fix flaw in escape transactions.
As reported by mmeijeri on r/Bitcoin:
https://www.reddit.com/r/Bitcoin/comments/3dlxw4/reaching_the_ground_with_lightning_lightning/ct80xpp
As the signature doesn't cover the input itself, you could replace the
secret key from the escape transaction with 0, and it will use the "A and B"
branch of the output.
(This also fixes a bug in the anchor output where the OP_IF consumed the
secret).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
ce4bdb9fe1
doc: fix error in fast-escape redeemscript.
Reported by killerstorm on reddit:
https://www.reddit.com/r/Bitcoin/comments/3dlxw4/reaching_the_ground_with_lightning_lightning/ct6jyim
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
d9c29387d1
doc: typo from roasbeef on reddit.
https://www.reddit.com/r/Bitcoin/comments/3dlxw4/reaching_the_ground_with_lightning_lightning/ct78mk9
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
e4921b9bc6
Add documentation.
First up, a draft of a paper showing the differences between the LN draft
and this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
8f64eb90af
Switch over to CCAN's ripemd160.
Avoids handing naked u8 arrays around, too.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
0f9ae8a19f
ccan: add ripemd160
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
81e73926f3
ccan: update.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
ec399e13a4
Makefile: update-ccan: new target.
Hacky, but syncs up ccan repository.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
402f1d28a8
Update .gitignore.
Reduce the clutter.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
456a43c3b4
Clean up extra ccan dirs.
Turns out that CCAN's create-ccan-tree has a bug with submodules.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
376e5bb584
README.md: Note Elements requirement.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
a663dc322c
Remove signature leaking.
Alpha has segregated witnesses, so txid doesn't include the inputs.
That means we can create the first commit transaction before we sign
the anchor tx.
Bitcoin will need to do this differently: presumbly via new sipops
(a OP_CHECKSIG2VERIFY I imagine).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
69b2690ecb
HOWTO-USE.md: use alpha instead of bitcoind for examples.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
f510e29e22
alpha: switch over to Elements Alpha by default.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
c660629760
test.sh: (alpha) make sure that spending tx fails too soon, succeeds after delay.
This only makes sense when we have CSV support.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
4011f7ae7c
create-commit-spend-tx: set alpha fields, and input locktime.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
20bb6c65aa
protocol fix: use locktime from *other* side.
Which emerged clearly when setting one side's locktime differently than
the other.
Each side specifies the (minimum) time they need to notice a fraud attempt:
this constrains the *other* side.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
9 years ago
Rusty Russell