f use existing secp context

Author: dunxen

lightning/src/ln/channel.rs

@@ -7636,7 +7636,6 @@ where
 			let all_prevouts = sighash::Prevouts::All(&prev_outputs[..]);
 
 			let mut cache = SighashCache::new(&built_tx);
-			let secp = Secp256k1::verification_only();
 
 			let script_pubkeys = unsigned_tx
 				.inputs()
@@ -7677,10 +7676,12 @@ where
 						.expect("Sighash is a SHA256 which is 32 bytes long");
 					let pubkey = PublicKey::from_slice(&witness[1]).map_err(|_| APIError::APIMisuseError { err: format!("The witness for input at index {input_idx} contains an invalid ECDSA public key") })?;
 					let sig = bitcoin::ecdsa::Signature::from_slice(&witness[0]).map_err(|_| APIError::APIMisuseError { err: format!("The witness for input at index {input_idx} contains an invalid signature") })?;
-					secp.verify_ecdsa(&msg, &sig.signature, &pubkey).map_err(|_| {
-						APIError::APIMisuseError { err:
+					self.context.secp_ctx.verify_ecdsa(&msg, &sig.signature, &pubkey).map_err(
+						|_| {
+							APIError::APIMisuseError { err:
 						format!("Failed signature verification for input at index {input_idx} for P2WPKH spend.") }
-					})?;
+						},
+					)?;
 					continue 'inputs;
 				}
 
@@ -7717,7 +7718,7 @@ where
 						_ => return Err(APIError::APIMisuseError { err: format!("The scriptPubKey of the previous output for input at index {input_idx} for a P2TR key path spend is invalid") }),
 					}.map_err(|_| APIError::APIMisuseError { err: format!("The scriptPubKey of the previous output for input at index {input_idx} for a P2TR key path spend has an invalid public key") })?;
 					let sig = bitcoin::taproot::Signature::from_slice(&witness[0]).map_err(|_| APIError::APIMisuseError { err: format!("The witness for input at index {input_idx} for a P2TR key path spend has an invalid signature") })?;
-					secp.verify_schnorr(&sig.signature, &msg, &pubkey).map_err(|_| {
+					self.context.secp_ctx.verify_schnorr(&sig.signature, &msg, &pubkey).map_err(|_| {
 						APIError::APIMisuseError { err: format!("Failed signature verification for input at index {input_idx} for P2WPKH spend.") }
 					})?;
 					continue 'inputs;