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Make derive_private_key public

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This commit is contained in:
Antoine Riard 2020-05-05 18:36:06 -04:00
parent 06445b6189
commit 4f84b05d31
1 changed files with 3 additions and 2 deletions
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5
lightning/src/ln/chan_utils.rs
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@ -171,9 +171,10 @@ impl Readable for CounterpartyCommitmentSecrets {
}
}
/// Derives a per-commitment-transaction private key (eg an htlc key or payment key) from the base
/// Derives a per-commitment-transaction private key (eg an htlc key, payment key or delayed_payment
/// key) from the base.
/// private key for that type of key and the per_commitment_point (available in TxCreationKeys)
pub(crate) fn derive_private_key<T: secp256k1::Signing>(secp_ctx: &Secp256k1<T>, per_commitment_point: &PublicKey, base_secret: &SecretKey) -> Result<SecretKey, secp256k1::Error> {
pub fn derive_private_key<T: secp256k1::Signing>(secp_ctx: &Secp256k1<T>, per_commitment_point: &PublicKey, base_secret: &SecretKey) -> Result<SecretKey, secp256k1::Error> {
let mut sha = Sha256::engine();
sha.input(&per_commitment_point.serialize());
sha.input(&PublicKey::from_secret_key(&secp_ctx, &base_secret).serialize());