From ae56cede1d63133193f5263e6797b97e6b69e6bd 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 | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/der/src/referenced.rs b/der/src/referenced.rs
index bb920db3a..0bcf78fef 100644
--- a/der/src/referenced.rs
+++ b/der/src/referenced.rs
@@ -1,5 +1,7 @@
 //! A module for working with referenced data.
 
+use alloc::boxed::Box;
+
 /// A trait for borrowing data from an owned struct
 pub trait OwnedToRef {
     /// The resulting type referencing back to Self
@@ -45,3 +47,19 @@ where
         self.as_ref().map(|o| o.ref_to_owned())
     }
 }
+
+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()
+    }
+}