Using the sha256 utils to generate a hash preimage for the htlc

side-node/src/bitcoin/driver/htlc.rs

@@ -1,4 +1,5 @@
 use crate::bitcoin::{self, driver};
+use crate::utils;
 use bdk::wallet::AddressIndex::New;
 use bdk::SignOptions;
 
@@ -14,12 +15,13 @@ pub(crate) async fn run() -> anyhow::Result<()> {
     let mut commitment_builder = dave.wallet.build_tx();
     let amount = 500;
     let recipient = sammy.wallet.get_address(New)?.script_pubkey();
+    let hash_preimage = utils::sha256("blah".to_string());
 
     // Feed it 500 sats, a redeem identity, a hashlock, a refund timelock, and a refund identity
     //
     let htlc = bitcoin::htlc::Htlc::new(
         dave.external_public_key,
-        "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff".to_string(),
+        hash_preimage,
         100,
         sammy.external_public_key,
     );