From 47e4bff0ee8e17bddbc96ad4e907439f5ea9feaa Mon Sep 17 00:00:00 2001
From: "Tobin C. Harding" <me@tobin.cc>
Date: Wed, 5 Jun 2024 08:39:47 +1000
Subject: [PATCH] pow: Fix off-by-one error

Length check has an off-by-one error in it, we want the check it include
hex strings of length 32 (eg, 128 bytes).
---
 bitcoin/src/pow.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bitcoin/src/pow.rs b/bitcoin/src/pow.rs
index 1642bef46..01e895a15 100644
--- a/bitcoin/src/pow.rs
+++ b/bitcoin/src/pow.rs
@@ -497,7 +497,7 @@ impl U256 {
 
     // Caller to ensure `s` does not contain a prefix.
     fn from_hex_internal(s: &str) -> Result<Self, ParseIntError> {
-        let (high, low) = if s.len() < 32 {
+        let (high, low) = if s.len() <= 32 {
             let low = parse::hex_u128_unchecked(s)?;
             (0, low)
         } else {