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derive_basepoints: actually derive a separate HTLC key.

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This means we'll find anywhere still using the payment key,
even though we still expose the private payment key to channeld.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2017-11-15 19:56:20 +10:30
committed by Christian Decker
parent 46f2e17905
commit 7ece90038b
1 changed files with 3 additions and 4 deletions
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7
common/derive_basepoints.c
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@@ -11,7 +11,7 @@ bool derive_basepoints(const struct privkey *seed,
struct sha256 *shaseed)
{
struct keys {
struct privkey f, r, p, d;
struct privkey f, r, h, p, d;
struct sha256 shaseed;
} keys;
@@ -22,8 +22,7 @@ bool derive_basepoints(const struct privkey *seed,
secrets->funding_privkey = keys.f;
secrets->revocation_basepoint_secret = keys.r.secret;
secrets->payment_basepoint_secret = keys.p.secret;
/* We currently make htlc_basepoint_secret the same */
secrets->htlc_basepoint_secret = keys.p.secret;
secrets->htlc_basepoint_secret = keys.h.secret;
secrets->delayed_payment_basepoint_secret = keys.d.secret;
}
@@ -34,8 +33,8 @@ bool derive_basepoints(const struct privkey *seed,
if (basepoints) {
if (!pubkey_from_privkey(&keys.r, &basepoints->revocation)
|| !pubkey_from_privkey(&keys.p, &basepoints->htlc)
|| !pubkey_from_privkey(&keys.p, &basepoints->payment)
|| !pubkey_from_privkey(&keys.h, &basepoints->htlc)
|| !pubkey_from_privkey(&keys.d, &basepoints->delayed_payment))
return false;
}