From c13fb5fb610ac40b428c90fe81d84b598fa93792 Mon Sep 17 00:00:00 2001
From: Bruce Leidl <bruce@subgraph.com>
Date: Tue, 29 Jan 2019 13:39:30 -0500
Subject: [PATCH] method to clear signature field

---
 libcitadel/src/header.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libcitadel/src/header.rs b/libcitadel/src/header.rs
index 3e5aaac..0c2fd69 100644
--- a/libcitadel/src/header.rs
+++ b/libcitadel/src/header.rs
@@ -226,6 +226,11 @@ impl ImageHeader {
         Ok(())
     }
 
+    pub fn clear_signature(&self) -> Result<()> {
+        let zeros = vec![0u8; SIGNATURE_LENGTH];
+        self.set_signature(&zeros)
+    }
+
     pub fn public_key(&self) -> Result<Option<PublicKey>> {
         let metainfo = self.metainfo()?;
         public_key_for_channel(metainfo.channel())