diff --git a/bindings/matrix-sdk-ffi/src/lib.rs b/bindings/matrix-sdk-ffi/src/lib.rs
index 8c1b48000ab..8f8cdb99d80 100644
--- a/bindings/matrix-sdk-ffi/src/lib.rs
+++ b/bindings/matrix-sdk-ffi/src/lib.rs
@@ -106,10 +106,11 @@ mod uniffi_types {
             SlidingSyncView, SlidingSyncViewBuilder, StoppableSpawn, UnreadNotificationsCount,
         },
         timeline::{
-            EmoteMessageContent, EventTimelineItem, FormattedBody, ImageInfo, ImageMessageContent,
-            InsertAtData, Message, MessageFormat, MessageType, NoticeMessageContent, Reaction,
-            TextMessageContent, ThumbnailInfo, TimelineChange, TimelineDiff, TimelineItem,
-            TimelineItemContent, TimelineKey, UpdateAtData, VirtualTimelineItem,
+            EmoteMessageContent, EncryptedMessage, EventTimelineItem, FormattedBody, ImageInfo,
+            ImageMessageContent, InsertAtData, Message, MessageFormat, MessageType,
+            NoticeMessageContent, Reaction, TextMessageContent, ThumbnailInfo, TimelineChange,
+            TimelineDiff, TimelineItem, TimelineItemContent, TimelineKey, UpdateAtData,
+            VirtualTimelineItem,
         },
     };
 }
diff --git a/bindings/matrix-sdk-ffi/src/timeline.rs b/bindings/matrix-sdk-ffi/src/timeline.rs
index 951a08416a8..792c1d7169c 100644
--- a/bindings/matrix-sdk-ffi/src/timeline.rs
+++ b/bindings/matrix-sdk-ffi/src/timeline.rs
@@ -220,6 +220,25 @@ impl TimelineItemContent {
         unwrap_or_clone_arc_into_variant!(self, .0, C::Message(msg) => Arc::new(Message(msg)))
     }
 
+    pub fn as_unable_to_decrypt(&self) -> Option<EncryptedMessage> {
+        use matrix_sdk::room::timeline::{EncryptedMessage as E, TimelineItemContent as C};
+
+        match &self.0 {
+            C::UnableToDecrypt(utd) => Some(match utd {
+                E::OlmV1Curve25519AesSha2 { sender_key } => {
+                    let sender_key = sender_key.clone();
+                    EncryptedMessage::OlmV1Curve25519AesSha2 { sender_key }
+                }
+                E::MegolmV1AesSha2 { session_id, .. } => {
+                    let session_id = session_id.clone();
+                    EncryptedMessage::MegolmV1AesSha2 { session_id }
+                }
+                E::Unknown => EncryptedMessage::Unknown,
+            }),
+            _ => None,
+        }
+    }
+
     pub fn is_redacted_message(&self) -> bool {
         use matrix_sdk::room::timeline::TimelineItemContent as C;
         matches!(self.0, C::RedactedMessage)
@@ -374,6 +393,21 @@ impl From<&matrix_sdk::ruma::events::room::ImageInfo> for ImageInfo {
     }
 }
 
+#[derive(Clone, uniffi::Enum)]
+pub enum EncryptedMessage {
+    OlmV1Curve25519AesSha2 {
+        /// The Curve25519 key of the sender.
+        sender_key: String,
+    },
+    // Other fields not included because UniFFI doesn't have the concept of
+    // deprecated fields right now.
+    MegolmV1AesSha2 {
+        /// The ID of the session used to encrypt the message.
+        session_id: String,
+    },
+    Unknown,
+}
+
 #[derive(Clone, uniffi::Record)]
 pub struct Reaction {
     pub key: String,