diff --git a/rust/pvimg/src/pv_utils/se_hdr/hdr_v2.rs b/rust/pvimg/src/pv_utils/se_hdr/hdr_v2.rs
index 4d481de1..eaeed7fa 100644
--- a/rust/pvimg/src/pv_utils/se_hdr/hdr_v2.rs
+++ b/rust/pvimg/src/pv_utils/se_hdr/hdr_v2.rs
@@ -118,11 +118,26 @@ impl KeyExchangeTrait for SeHdrAadV2 {
         Self::KEY_TYPE
     }
 
+    /** contains_hash - test if the given hash is in this SE-header
+     *
+     * * `hash`: hash to compare, either 32 or 64 byte long
+     *
+     * Returns:
+     *   - false if the given hash is not 64 or 32 bytes long
+     *   - the comparison result otherwise
+     */
     fn contains_hash<H: AsRef<[u8]>>(&self, hash: H) -> bool {
         let hash = hash.as_ref();
+        let size = hash.len();
+
+        match size {
+            UvKeyHashV1::UV_KEY_HASH_SIZE | SHA_512_HASH_LEN => (),
+            _ => return false,
+        };
+
         self.keyslots
             .iter()
-            .any(|ks| &ks.phkh[..UvKeyHashV1::UV_KEY_HASH_SIZE] == hash)
+            .any(|ks| ks.phkh[..size] == hash[..size])
     }
 
     fn contains<K>(&self, key: K) -> Result<bool>