From 1fc6842917db3efa4449a9160dc524cc0844f50a Mon Sep 17 00:00:00 2001
From: Hendrik Hofstadt <hendrik@nexantic.com>
Date: Tue, 20 Jul 2021 09:54:11 +0200
Subject: [PATCH] Double hashing on terra

Change-Id: Ie3d65030d221585245d94d7650694fc545e72174
---
 terra/contracts/wormhole/src/state.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/terra/contracts/wormhole/src/state.rs b/terra/contracts/wormhole/src/state.rs
index d0d509ec..a0a5f7eb 100644
--- a/terra/contracts/wormhole/src/state.rs
+++ b/terra/contracts/wormhole/src/state.rs
@@ -114,6 +114,11 @@ impl ParsedVAA {
         hasher.update(body);
         let hash = hasher.finalize().to_vec();
 
+        // Rehash the hash
+        let mut hasher = Keccak256::new();
+        hasher.update(hash);
+        let hash = hasher.finalize().to_vec();
+
         // Signatures valid, apply VAA
         if body_offset + Self::VAA_PAYLOAD_POS > data.len() {
             return ContractError::InvalidVAA.std_err();