From 95a67967783178579c595ced89236925e3d24850 Mon Sep 17 00:00:00 2001
From: Oliver Gugger <gugger@gmail.com>
Date: Fri, 17 Jan 2020 23:19:27 +0100
Subject: [PATCH] lnwallet/btcwallet: use fast scrypt options in itest

---
 lnwallet/btcwallet/btcwallet_rpctest.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 lnwallet/btcwallet/btcwallet_rpctest.go

diff --git a/lnwallet/btcwallet/btcwallet_rpctest.go b/lnwallet/btcwallet/btcwallet_rpctest.go
new file mode 100644
index 00000000..7139e4cc
--- /dev/null
+++ b/lnwallet/btcwallet/btcwallet_rpctest.go
@@ -0,0 +1,23 @@
+// +build rpctest
+
+package btcwallet
+
+import (
+	"github.com/btcsuite/btcwallet/snacl"
+	"github.com/btcsuite/btcwallet/waddrmgr"
+)
+
+func init() {
+	// Instruct waddrmgr to use the cranked down scrypt parameters when
+	// creating new wallet encryption keys. This will speed up the itests
+	// considerably.
+	fastScrypt := waddrmgr.FastScryptOptions
+	keyGen := func(passphrase *[]byte, config *waddrmgr.ScryptOptions) (
+		*snacl.SecretKey, error) {
+
+		return snacl.NewSecretKey(
+			passphrase, fastScrypt.N, fastScrypt.R, fastScrypt.P,
+		)
+	}
+	waddrmgr.SetSecretKeyGen(keyGen)
+}