Improve documentation for validate_holder_commitment and sign_counterparty_commitment

diff --git a/lightning/src/chain/keysinterface.rs b/lightning/src/chain/keysinterface.rs
index d912740a019a8a6bb215081c94bd084dde380dc0..ee7d4d65972b544db75e842c8de5de1ec527765a 100644 (file)
--- a/lightning/src/chain/keysinterface.rs
+++ b/lightning/src/chain/keysinterface.rs
@@ -216,6 +216,8 @@ pub trait BaseSign {
        ///
        /// This is required in order for the signer to make sure that releasing a commitment
        /// secret won't leave us without a broadcastable holder transaction.
+       /// Policy checks should be implemented in this function, including checking the amount
+       /// sent to us and checking the HTLCs.
        fn validate_holder_commitment(&self, holder_tx: &HolderCommitmentTransaction);
        /// Gets the holder's channel public keys and basepoints
        fn pubkeys(&self) -> &ChannelPublicKeys;
@@ -227,6 +229,9 @@ pub trait BaseSign {
        /// Create a signature for a counterparty's commitment transaction and associated HTLC transactions.
        ///
        /// Note that if signing fails or is rejected, the channel will be force-closed.
+       ///
+       /// Policy checks should be implemented in this function, including checking the amount
+       /// sent to us and checking the HTLCs.
        //
        // TODO: Document the things someone using this interface should enforce before signing.
        fn sign_counterparty_commitment(&self, commitment_tx: &CommitmentTransaction, secp_ctx: &Secp256k1<secp256k1::All>) -> Result<(Signature, Vec<Signature>), ()>;