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Remove signature leaking.

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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>
This commit is contained in:
Rusty Russell
2015-07-03 14:00:54 +09:30
parent 69b2690ecb
commit a663dc322c
12 changed files with 36 additions and 246 deletions
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12
test-cli/scripts/test.sh
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@@ -68,18 +68,14 @@ $PREFIX ./open-channel --locktime=60 $B_SEED $B_AMOUNT $B_CHANGEPUBKEY $B_TMPKEY
$PREFIX ./open-anchor-scriptsigs A-open.pb B-open.pb $A_TXINKEY > A-anchor-scriptsigs.pb
$PREFIX ./open-anchor-scriptsigs B-open.pb A-open.pb $B_TXINKEY > B-anchor-scriptsigs.pb
# Now leak that signature.
$PREFIX ./leak-anchor-sigs A-anchor-scriptsigs.pb > A-leak-anchor-sigs.pb
$PREFIX ./leak-anchor-sigs B-anchor-scriptsigs.pb > B-leak-anchor-sigs.pb
# Now create commit signature
$PREFIX ./open-commit-sig A-open.pb B-open.pb $A_TMPKEY A-leak-anchor-sigs.pb B-leak-anchor-sigs.pb > A-commit-sig.pb
$PREFIX ./open-commit-sig A-open.pb B-open.pb $A_TMPKEY > A-commit-sig.pb
$PREFIX ./open-commit-sig B-open.pb A-open.pb $B_TMPKEY B-leak-anchor-sigs.pb A-leak-anchor-sigs.pb > B-commit-sig.pb
$PREFIX ./open-commit-sig B-open.pb A-open.pb $B_TMPKEY > B-commit-sig.pb
# Now check it.
$PREFIX ./check-commit-sig A-open.pb B-open.pb B-commit-sig.pb $A_TMPKEY A-leak-anchor-sigs.pb B-leak-anchor-sigs.pb > A-commit.tx
$PREFIX ./check-commit-sig B-open.pb A-open.pb A-commit-sig.pb $B_TMPKEY B-leak-anchor-sigs.pb A-leak-anchor-sigs.pb > B-commit.tx
$PREFIX ./check-commit-sig A-open.pb B-open.pb B-commit-sig.pb $A_TMPKEY > A-commit.tx
$PREFIX ./check-commit-sig B-open.pb A-open.pb A-commit-sig.pb $B_TMPKEY > B-commit.tx
# Now check anchor sigs and make sure they're the same.
$PREFIX ./check-anchor-scriptsigs A-open.pb B-open.pb A-anchor-scriptsigs.pb B-anchor-scriptsigs.pb > A-anchor.tx