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| 1 | import XCTest |
| 2 | @testable import LChatCore |
| 3 | |
| 4 | // Pins the open-group key wire shape shared with the web (shell.js |
| 5 | // createThread / loadThreads): open_key = {k: <thread key, base64url>} |
| 6 | // encrypted under the instance key; the group name decrypts with the carried |
| 7 | // thread key. If either side changes the envelope, this breaks here rather |
| 8 | // than as a silently-undecryptable directory in production. |
| 9 | final class OpenKeyRoundTripTests: XCTestCase { |
| 10 | func testOpenKeyWireShapeRoundTrips() throws { |
| 11 | let ik = try GroupKey(rawKey: ECIES.randomAESKey()) |
| 12 | let threadRaw = ECIES.randomAESKey() |
| 13 | |
| 14 | // What createChat(openGroup:) writes… |
| 15 | let openKey = try ik.encryptJSON(["k": threadRaw.base64urlEncodedString()]) |
| 16 | |
| 17 | // …and what the fold / discoverGroups read back. |
| 18 | let payload = try ik.decryptJSON(OpenKeyPayload.self, blob: openKey) |
| 19 | XCTAssertEqual(Data(base64urlEncoded: payload.k), threadRaw) |
| 20 | |
| 21 | let key = try GroupKey(rawKey: Data(base64urlEncoded: payload.k)!) |
| 22 | let nameBlob = try key.encryptJSON(["name": "Fáilte 🏠"]) |
| 23 | XCTAssertEqual(try key.decryptJSON(GroupNamePayload.self, blob: nameBlob).name, "Fáilte 🏠") |
| 24 | } |
| 25 | } |
| 26 | |
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