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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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8
test-cli/open-commit-sig.c
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@@ -36,14 +36,14 @@ int main(int argc, char *argv[])
err_set_progname(argv[0]);
opt_register_noarg("--help|-h", opt_usage_and_exit,
"<open-channel-file1> <open-channel-file2> <commit-privkey> <leak-anchor-sigs1> <leak-anchor-sigs2>\n"
"<open-channel-file1> <open-channel-file2> <commit-privkey>\n"
"Create the signature needed for the commit transaction",
"Print this message.");
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc != 6)
opt_usage_exit_fail("Expected 5 arguments");
if (argc != 4)
opt_usage_exit_fail("Expected 3 arguments");
o1 = pkt_from_file(argv[1], PKT__PKT_OPEN)->open;
o2 = pkt_from_file(argv[2], PKT__PKT_OPEN)->open;
@@ -59,7 +59,7 @@ int main(int argc, char *argv[])
errx(1, "Failed transaction merge");
/* Get the transaction ID of the anchor. */
anchor_txid(anchor, argv[4], argv[5], inmap, &txid);
anchor_txid(anchor, &txid);
/* Now create THEIR commitment tx to spend 2/2 output of anchor. */
proto_to_sha256(o2->revocation_hash, &rhash);