diff --git a/crates/tor-llcrypto/src/pk/ed25519.rs b/crates/tor-llcrypto/src/pk/ed25519.rs
index 8f31ee8f8..cbd4a33db 100644
--- a/crates/tor-llcrypto/src/pk/ed25519.rs
+++ b/crates/tor-llcrypto/src/pk/ed25519.rs
@@ -80,6 +80,12 @@ impl From<[u8; ED25519_ID_LEN]> for Ed25519Identity {
     }
 }
 
+impl From<Ed25519Identity> for [u8; ED25519_ID_LEN] {
+    fn from(value: Ed25519Identity) -> Self {
+        value.id.into()
+    }
+}
+
 impl From<PublicKey> for Ed25519Identity {
     fn from(pk: PublicKey) -> Self {
         (&pk).into()
diff --git a/crates/tor-llcrypto/src/semver.md b/crates/tor-llcrypto/src/semver.md
new file mode 100644
index 000000000..53715a5a9
--- /dev/null
+++ b/crates/tor-llcrypto/src/semver.md
@@ -0,0 +1 @@
+ADDED: `Into<[u8;_]>` for Ed25519Identity