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Expose TxCreationKeys in LocalCommitmentTransaction via a method

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This makes it obvious to signer implementers that the pre-derived keys are a local cache and should not be trusted in a validating signer.
This commit is contained in:
Devrandom 2020-08-09 15:56:10 +02:00
parent d2e6f2ac18
commit 6f635c6bc3
1 changed files with 7 additions and 2 deletions
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9
lightning/src/ln/chan_utils.rs
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@ -540,8 +540,7 @@ pub struct LocalCommitmentTransaction {
// Which order the signatures should go in when constructing the final commitment tx witness.
// The user should be able to reconstruc this themselves, so we don't bother to expose it.
our_sig_first: bool,
/// The key derivation parameters for this commitment transaction
pub local_keys: TxCreationKeys,
pub(crate) local_keys: TxCreationKeys,
/// The feerate paid per 1000-weight-unit in this commitment transaction. This value is
/// controlled by the channel initiator.
pub feerate_per_kw: u32,
@ -606,6 +605,12 @@ impl LocalCommitmentTransaction {
}
}
/// The pre-calculated transaction creation public keys.
/// An external validating signer should not trust these keys.
pub fn trust_key_derivation(&self) -> &TxCreationKeys {
&self.local_keys
}
/// Get the txid of the local commitment transaction contained in this
/// LocalCommitmentTransaction
pub fn txid(&self) -> Txid {