From 5a547228486f878e267bdc84b64e8ddeb8fe5a11 Mon Sep 17 00:00:00 2001
From: Marc Hartmayer <mhartmay@linux.ibm.com>
Date: Fri, 15 Nov 2024 12:06:45 +0000
Subject: [PATCH] rust/crypto: Implement `Display` for `SymKeyType`

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
---
 rust/pv/src/crypto.rs | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/rust/pv/src/crypto.rs b/rust/pv/src/crypto.rs
index 13c12bfb..1e3bc940 100644
--- a/rust/pv/src/crypto.rs
+++ b/rust/pv/src/crypto.rs
@@ -2,6 +2,8 @@
 //
 // Copyright IBM Corp. 2023, 2024
 
+use std::{convert::TryInto, fmt::Display, ops::Range};
+
 use enum_dispatch::enum_dispatch;
 use openssl::{
     derive::Deriver,
@@ -17,7 +19,6 @@ use openssl::{
     symm::{decrypt_aead, encrypt_aead, Cipher},
 };
 use pv_core::request::Confidential;
-use std::{convert::TryInto, ops::Range};
 
 use crate::{error::Result, Error};
 
@@ -49,6 +50,16 @@ impl SymKeyType {
     pub const Aes256: Self = Self::Aes256Gcm;
 }
 
+impl Display for SymKeyType {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let s = match self {
+            Self::Aes256Gcm => "AES-256-GCM",
+            Self::Aes256Xts => "AES-256-XTS",
+        };
+        write!(f, "{s}")
+    }
+}
+
 impl From<SymKeyType> for Nid {
     fn from(value: SymKeyType) -> Self {
         match value {