f use new spontaneous_pmt_key instead offers_base_key

Author: valentinewallace

lightning/src/ln/inbound_payment.rs

@@ -204,7 +204,7 @@ pub(super) fn create_for_spontaneous_payment(
 		min_final_cltv_expiry_delta
 	)?;
 
-	let mut hmac = HmacEngine::<Sha256>::new(&keys.offers_base_key);
+	let mut hmac = HmacEngine::<Sha256>::new(&keys.spontaneous_pmt_key);
 	hmac.input(&metadata_bytes);
 	let hmac_bytes = Hmac::from_engine(hmac).to_byte_array();
 
@@ -344,7 +344,7 @@ pub(super) fn verify<L: Deref>(payment_hash: PaymentHash, payment_data: &msgs::F
 			}
 		},
 		Ok(Method::SpontaneousPayment) => {
-			let mut hmac = HmacEngine::<Sha256>::new(&keys.offers_base_key);
+			let mut hmac = HmacEngine::<Sha256>::new(&keys.spontaneous_pmt_key);
 			hmac.input(&metadata_bytes[..]);
 			if !fixed_time_eq(&iv_bytes, &Hmac::from_engine(hmac).to_byte_array().split_at_mut(IV_LEN).0) {
 				log_trace!(logger, "Failing async payment HTLC with sender-generated payment_hash {}: unexpected payment_secret", &payment_hash);