From a3788eda6e0a1f3f26e81e81240cfcdf206bdb7b Mon Sep 17 00:00:00 2001
From: David Drysdale <drysdale@google.com>
Date: Thu, 15 Jan 2026 17:17:56 +0000
Subject: [PATCH] Use core version of Error in new helper

---
 src/key/mod.rs | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/key/mod.rs b/src/key/mod.rs
index 9c515a1..ba1af82 100644
--- a/src/key/mod.rs
+++ b/src/key/mod.rs
@@ -105,8 +105,7 @@ pub enum ToSec1OctetStringError {
     UnequalCoordinateLength,
 }
 
-#[cfg(feature = "std")]
-impl std::error::Error for ToSec1OctetStringError {}
+impl core::error::Error for ToSec1OctetStringError {}
 
 impl core::fmt::Display for ToSec1OctetStringError {
     fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
@@ -125,8 +124,7 @@ impl core::fmt::Display for ToSec1OctetStringError {
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub struct ParseSec1OctetStringError;
 
-#[cfg(feature = "std")]
-impl std::error::Error for ParseSec1OctetStringError {}
+impl core::error::Error for ParseSec1OctetStringError {}
 
 impl core::fmt::Display for ParseSec1OctetStringError {
     fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {