Encrypt private media before fragmentation

2026-07-25 16:05:19 +00:00 · 2026-07-10 21:00:54 +02:00
parent 733098bb63
commit 7faa9d7d4a
25 changed files with 893 additions and 138 deletions
@@ -117,6 +117,35 @@ struct BLEFragmentAssemblyBufferTests {
        }
    }

+    @Test
+    func encryptedPrivateFileAssemblyGetsFramedFileHeadroom() throws {
+        var buffer = BLEFragmentAssemblyBuffer()
+        let fragmentID = Data(repeating: 0x15, count: 8)
+        let first = try #require(BLEFragmentHeader(packet: makeFragmentPacket(
+            fragmentID: fragmentID,
+            index: 0,
+            total: 2,
+            originalType: MessageType.noiseEncrypted.rawValue,
+            fragmentData: Data(repeating: 0x01, count: FileTransferLimits.maxPayloadBytes)
+        )))
+        let second = try #require(BLEFragmentHeader(packet: makeFragmentPacket(
+            fragmentID: fragmentID,
+            index: 1,
+            total: 2,
+            originalType: MessageType.noiseEncrypted.rawValue,
+            fragmentData: Data([0x02])
+        )))
+
+        _ = buffer.append(first, maxInFlightAssemblies: 8)
+        let result = buffer.append(second, maxInFlightAssemblies: 8)
+
+        if case let .complete(_, data, _) = result {
+            #expect(data.count == FileTransferLimits.maxPayloadBytes + 1)
+        } else {
+            Issue.record("Expected encrypted private-file assembly to use framed-file limit")
+        }
+    }
+
    @Test
    func removeExpiredDropsOldAssemblies() throws {
        var buffer = BLEFragmentAssemblyBuffer()