From 755f23bf0a01c09ac01566eda12e7e61e54bde69 Mon Sep 17 00:00:00 2001
From: Arthur Gautier <baloo@superbaloo.net>
Date: Fri, 4 Aug 2023 19:08:21 +0000
Subject: [PATCH] der: impl `RefToOwned`/`OwnedToRef` for `&[u8]`/`Box<[u8]>`

Signed-off-by: Arthur Gautier <baloo@superbaloo.net>
---
 der/src/referenced.rs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/der/src/referenced.rs b/der/src/referenced.rs
index bb920db3a..b0c8f0325 100644
--- a/der/src/referenced.rs
+++ b/der/src/referenced.rs
@@ -45,3 +45,25 @@ where
         self.as_ref().map(|o| o.ref_to_owned())
     }
 }
+
+#[cfg(feature = "alloc")]
+mod allocating {
+    use super::{OwnedToRef, RefToOwned};
+    use alloc::boxed::Box;
+
+    impl<'a> RefToOwned<'a> for &'a [u8] {
+        type Owned = Box<[u8]>;
+
+        fn ref_to_owned(&self) -> Self::Owned {
+            Box::from(*self)
+        }
+    }
+
+    impl OwnedToRef for Box<[u8]> {
+        type Borrowed<'a> = &'a [u8];
+
+        fn owned_to_ref(&self) -> Self::Borrowed<'_> {
+            self.as_ref()
+        }
+    }
+}