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323 lines
15 KiB
Swift
323 lines
15 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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import GRDB
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import Sodium
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import SessionUtilitiesKit
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import Quick
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import Nimble
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@testable import SessionMessagingKit
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class MessageSenderEncryptionSpec: QuickSpec {
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// MARK: - Spec
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override func spec() {
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var mockStorage: Storage!
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var mockBox: MockBox!
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var mockSign: MockSign!
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var mockNonce24Generator: MockNonce24Generator!
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var dependencies: SMKDependencies!
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describe("a MessageSender") {
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beforeEach {
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mockStorage = Storage(
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customWriter: try! DatabaseQueue(),
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customMigrations: [
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SNUtilitiesKit.migrations(),
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SNMessagingKit.migrations()
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]
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)
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mockBox = MockBox()
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mockSign = MockSign()
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mockNonce24Generator = MockNonce24Generator()
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dependencies = SMKDependencies(
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storage: mockStorage,
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box: mockBox,
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sign: mockSign,
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nonceGenerator24: mockNonce24Generator
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)
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mockStorage.write { db in
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try Identity(variant: .ed25519PublicKey, data: Data(hex: TestConstants.edPublicKey)).insert(db)
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try Identity(variant: .ed25519SecretKey, data: Data(hex: TestConstants.edSecretKey)).insert(db)
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}
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mockNonce24Generator
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.when { $0.nonce() }
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.thenReturn(Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!.bytes)
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}
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context("when encrypting with the session protocol") {
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beforeEach {
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mockBox.when { $0.seal(message: anyArray(), recipientPublicKey: anyArray()) }.thenReturn([1, 2, 3])
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mockSign.when { $0.signature(message: anyArray(), secretKey: anyArray()) }.thenReturn([])
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}
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it("can encrypt correctly") {
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let result = mockStorage.write { db in
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try? MessageSender.encryptWithSessionProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "05\(TestConstants.publicKey)",
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using: SMKDependencies(storage: mockStorage)
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)
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}
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// Note: A Nonce is used for this so we can't compare the exact value when not mocked
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expect(result).toNot(beNil())
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expect(result?.count).to(equal(155))
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}
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it("returns the correct value when mocked") {
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let result = mockStorage.write { db in
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try? MessageSender.encryptWithSessionProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "05\(TestConstants.publicKey)",
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using: dependencies
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)
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}
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expect(result?.bytes).to(equal([1, 2, 3]))
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}
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it("throws an error if there is no ed25519 keyPair") {
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mockStorage.write { db in
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_ = try Identity.filter(id: .ed25519PublicKey).deleteAll(db)
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_ = try Identity.filter(id: .ed25519SecretKey).deleteAll(db)
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}
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "05\(TestConstants.publicKey)",
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.noUserED25519KeyPair))
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}
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}
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it("throws an error if the signature generation fails") {
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mockSign.when { $0.signature(message: anyArray(), secretKey: anyArray()) }.thenReturn(nil)
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "05\(TestConstants.publicKey)",
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.signingFailed))
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}
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}
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it("throws an error if the encryption fails") {
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mockBox.when { $0.seal(message: anyArray(), recipientPublicKey: anyArray()) }.thenReturn(nil)
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "05\(TestConstants.publicKey)",
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.encryptionFailed))
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}
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}
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}
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context("when encrypting with the blinded session protocol") {
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it("successfully encrypts") {
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let result = mockStorage.write { db in
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try? MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "15\(TestConstants.blindedPublicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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expect(result?.toHexString())
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.to(equal(
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"00db16b6687382811d69875a5376f66acad9c49fe5e26bcf770c7e6e9c230299" +
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"f61b315299dd1fa700dd7f34305c0465af9e64dc791d7f4123f1eeafa5b4d48b" +
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"3ade4f4b2a2764762e5a2c7900f254bd91633b43"
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))
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}
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it("includes a version at the start of the encrypted value") {
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let result = mockStorage.write { db in
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try? MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "15\(TestConstants.blindedPublicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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expect(result?.toHexString().prefix(2)).to(equal("00"))
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}
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it("includes the nonce at the end of the encrypted value") {
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let maybeResult = mockStorage.write { db in
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try? MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "15\(TestConstants.blindedPublicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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let result: [UInt8] = (maybeResult?.bytes ?? [])
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let nonceBytes: [UInt8] = Array(result[max(0, (result.count - 24))..<result.count])
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expect(Data(nonceBytes).base64EncodedString())
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.to(equal("pbTUizreT0sqJ2R2LloseQDyVL2RYztD"))
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}
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it("throws an error if the recipient isn't a blinded id") {
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "05\(TestConstants.publicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.signingFailed))
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}
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}
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it("throws an error if there is no ed25519 keyPair") {
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mockStorage.write { db in
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_ = try Identity.filter(id: .ed25519PublicKey).deleteAll(db)
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_ = try Identity.filter(id: .ed25519SecretKey).deleteAll(db)
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}
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "15\(TestConstants.blindedPublicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.noUserED25519KeyPair))
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}
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}
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it("throws an error if it fails to generate a blinded keyPair") {
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let mockSodium: MockSodium = MockSodium()
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let mockGenericHash: MockGenericHash = MockGenericHash()
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dependencies = dependencies.with(sodium: mockSodium, genericHash: mockGenericHash)
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mockSodium
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.when {
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$0.blindedKeyPair(
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serverPublicKey: any(),
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edKeyPair: any(),
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genericHash: mockGenericHash
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)
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}
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.thenReturn(nil)
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "15\(TestConstants.blindedPublicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.signingFailed))
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}
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}
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it("throws an error if it fails to generate an encryption key") {
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let mockSodium: MockSodium = MockSodium()
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let mockGenericHash: MockGenericHash = MockGenericHash()
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dependencies = dependencies.with(sodium: mockSodium, genericHash: mockGenericHash)
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mockSodium
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.when {
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$0.blindedKeyPair(
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serverPublicKey: any(),
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edKeyPair: any(),
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genericHash: mockGenericHash
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)
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}
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.thenReturn(
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KeyPair(
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publicKey: Data(hex: TestConstants.edPublicKey).bytes,
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secretKey: Data(hex: TestConstants.edSecretKey).bytes
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)
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)
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mockSodium
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.when {
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$0.sharedBlindedEncryptionKey(
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secretKey: anyArray(),
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otherBlindedPublicKey: anyArray(),
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fromBlindedPublicKey: anyArray(),
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toBlindedPublicKey: anyArray(),
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genericHash: mockGenericHash
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)
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}
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.thenReturn(nil)
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "15\(TestConstants.blindedPublicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.signingFailed))
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}
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}
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it("throws an error if it fails to encrypt") {
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let mockAeadXChaCha: MockAeadXChaCha20Poly1305Ietf = MockAeadXChaCha20Poly1305Ietf()
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dependencies = dependencies.with(aeadXChaCha20Poly1305Ietf: mockAeadXChaCha)
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mockAeadXChaCha
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.when { $0.encrypt(message: anyArray(), secretKey: anyArray(), nonce: anyArray()) }
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.thenReturn(nil)
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mockStorage.write { db in
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expect {
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try MessageSender.encryptWithSessionBlindingProtocol(
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db,
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plaintext: "TestMessage".data(using: .utf8)!,
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for: "15\(TestConstants.blindedPublicKey)",
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openGroupPublicKey: TestConstants.serverPublicKey,
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using: dependencies
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)
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}
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.to(throwError(MessageSenderError.encryptionFailed))
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}
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}
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}
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}
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}
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}
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