diff --git a/lib/types/media-types.js b/lib/types/media-types.js
--- a/lib/types/media-types.js
+++ b/lib/types/media-types.js
@@ -261,6 +261,38 @@
       +exceptionMessage: ?string,
     };
 
+export type DecryptFileMediaMissionStep =
+  | {
+      +step: 'fetch_file',
+      +file: string,
+      +time: number,
+      +success: boolean,
+      +exceptionMessage: ?string,
+    }
+  | {
+      +step: 'decrypt_data',
+      +dataSize: number,
+      +time: number,
+      +isPadded: boolean,
+      +success: boolean,
+      +exceptionMessage: ?string,
+    }
+  | {
+      +step: 'write_file',
+      +file: string,
+      +mimeType: string,
+      +time: number,
+      +success: boolean,
+      +exceptionMessage: ?string,
+    }
+  | {
+      +step: 'create_data_uri',
+      +mimeType: string,
+      +time: number,
+      +success: boolean,
+      +exceptionMessage: ?string,
+    };
+
 export type MediaLibrarySelection =
   | {
       +step: 'photo_library',
@@ -471,6 +503,7 @@
   | FetchFileHashMediaMissionStep
   | CopyFileMediaMissionStep
   | EncryptFileMediaMissionStep
+  | DecryptFileMediaMissionStep
   | GetOrientationMediaMissionStep
   | GenerateThumbhashMediaMissionStep
   | {
@@ -644,7 +677,14 @@
     }
   | { +success: false, +reason: 'digest_failed' }
   | { +success: false, +reason: 'thumbhash_failed' }
-  | { +success: false, +reason: 'preload_image_failed' };
+  | { +success: false, +reason: 'preload_image_failed' }
+  | DecryptionFailure;
+
+export type DecryptionFailure = {
+  +success: false,
+  +reason: 'fetch_file_failed' | 'decrypt_data_failed' | 'write_file_failed',
+  +exceptionMessage: ?string,
+};
 
 export type MediaMissionResult = MediaMissionFailure | { +success: true };
 
diff --git a/native/media/encryption-utils.js b/native/media/encryption-utils.js
--- a/native/media/encryption-utils.js
+++ b/native/media/encryption-utils.js
@@ -13,6 +13,7 @@
 import type {
   MediaMissionFailure,
   MediaMissionStep,
+  DecryptFileMediaMissionStep,
   EncryptFileMediaMissionStep,
 } from 'lib/types/media-types.js';
 import { getMessageForException } from 'lib/utils/errors.js';
@@ -244,48 +245,6 @@
   };
 }
 
-type DecryptFileStep =
-  | {
-      +step: 'fetch_file',
-      +file: string,
-      +time: number,
-      +success: boolean,
-      +exceptionMessage: ?string,
-    }
-  | {
-      +step: 'decrypt_data',
-      +dataSize: number,
-      +time: number,
-      +isPadded: boolean,
-      +success: boolean,
-      +exceptionMessage: ?string,
-    }
-  | {
-      +step: 'write_file',
-      +file: string,
-      +mimeType: string,
-      +time: number,
-      +success: boolean,
-      +exceptionMessage: ?string,
-    }
-  | {
-      +step: 'create_data_uri',
-      +mimeType: string,
-      +time: number,
-      +success: boolean,
-      +exceptionMessage: ?string,
-    };
-type DecryptionFailure =
-  | MediaMissionFailure
-  | {
-      +success: false,
-      +reason:
-        | 'fetch_file_failed'
-        | 'decrypt_data_failed'
-        | 'write_file_failed',
-      +exceptionMessage: ?string,
-    };
-
 async function decryptMedia(
   blobURI: string,
   encryptionKey: string,
@@ -294,12 +253,12 @@
     +destinationDirectory?: string,
   },
 ): Promise<{
-  steps: $ReadOnlyArray<DecryptFileStep>,
-  result: DecryptionFailure | { success: true, uri: string },
+  steps: $ReadOnlyArray<DecryptFileMediaMissionStep>,
+  result: MediaMissionFailure | { success: true, uri: string },
 }> {
   let success = true,
     exceptionMessage;
-  const steps: DecryptFileStep[] = [];
+  const steps: DecryptFileMediaMissionStep[] = [];
 
   // Step 1. Fetch the file and convert it to a Uint8Array
   const fetchStartTime = Date.now();