505 lines
25 KiB
Swift
505 lines
25 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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import Sodium
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import GRDB
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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 MessageReceiverDecryptionSpec: 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 mockSodium: MockSodium!
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var mockBox: MockBox!
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var mockGenericHash: MockGenericHash!
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var mockSign: MockSign!
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var mockAeadXChaCha: MockAeadXChaCha20Poly1305Ietf!
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var mockNonce24Generator: MockNonce24Generator!
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var dependencies: SMKDependencies!
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describe("a MessageReceiver") {
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beforeEach {
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mockStorage = Storage(
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customWriter: try! DatabaseQueue(),
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customMigrationTargets: [
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SNUtilitiesKit.self,
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SNMessagingKit.self
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]
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)
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mockSodium = MockSodium()
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mockBox = MockBox()
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mockGenericHash = MockGenericHash()
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mockSign = MockSign()
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mockAeadXChaCha = MockAeadXChaCha20Poly1305Ietf()
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mockNonce24Generator = MockNonce24Generator()
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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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dependencies = SMKDependencies(
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storage: mockStorage,
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sodium: mockSodium,
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box: mockBox,
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genericHash: mockGenericHash,
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sign: mockSign,
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aeadXChaCha20Poly1305Ietf: mockAeadXChaCha,
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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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mockBox
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.when {
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$0.open(
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anonymousCipherText: anyArray(),
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recipientPublicKey: anyArray(),
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recipientSecretKey: anyArray()
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)
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}
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.thenReturn([UInt8](repeating: 0, count: 100))
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mockSodium
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.when { $0.blindedKeyPair(serverPublicKey: any(), edKeyPair: any(), genericHash: mockGenericHash) }
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.thenReturn(
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KeyPair(
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publicKey: Data(hex: TestConstants.blindedPublicKey).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([])
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mockSodium
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.when { $0.generateBlindingFactor(serverPublicKey: any(), genericHash: mockGenericHash) }
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.thenReturn([])
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mockSodium
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.when { $0.combineKeys(lhsKeyBytes: anyArray(), rhsKeyBytes: anyArray()) }
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.thenReturn(Data(hex: TestConstants.blindedPublicKey).bytes)
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mockSign
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.when { $0.toX25519(ed25519PublicKey: anyArray()) }
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.thenReturn(Data(hex: TestConstants.publicKey).bytes)
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mockSign
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.when { $0.verify(message: anyArray(), publicKey: anyArray(), signature: anyArray()) }
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.thenReturn(true)
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mockAeadXChaCha
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.when { $0.decrypt(authenticatedCipherText: anyArray(), secretKey: anyArray(), nonce: anyArray()) }
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.thenReturn("TestMessage".data(using: .utf8)!.bytes + [UInt8](repeating: 0, count: 32))
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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 decrypting with the session protocol") {
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it("successfully decrypts a message") {
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let result = try? MessageReceiver.decryptWithSessionProtocol(
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ciphertext: Data(
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base64Encoded: "SRP0eBUWh4ez6ppWjUs5/Wph5fhnPRgB5zsWWnTz+FBAw/YI3oS2pDpIfyetMTbU" +
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"sFMhE5G4PbRtQFey1hsxLl221Qivc3ayaX2Mm/X89Dl8e45BC+Lb/KU9EdesxIK4pVgYXs9XrMtX3v8" +
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"dt0eBaXneOBfr7qB8pHwwMZjtkOu1ED07T9nszgbWabBphUfWXe2U9K3PTRisSCI="
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)!,
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using: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.publicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.privateKey)!.bytes
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),
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dependencies: SMKDependencies()
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)
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expect(String(data: (result?.plaintext ?? Data()), encoding: .utf8)).to(equal("TestMessage"))
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expect(result?.senderX25519PublicKey)
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.to(equal("0588672ccb97f40bb57238989226cf429b575ba355443f47bc76c5ab144a96c65b"))
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}
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it("throws an error if it cannot open the message") {
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mockBox
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.when {
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$0.open(
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anonymousCipherText: anyArray(),
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recipientPublicKey: anyArray(),
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recipientSecretKey: anyArray()
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)
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}
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.thenReturn(nil)
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expect {
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try MessageReceiver.decryptWithSessionProtocol(
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ciphertext: "TestMessage".data(using: .utf8)!,
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using: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.publicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.privateKey)!.bytes
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),
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dependencies: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if the open message is too short") {
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mockBox
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.when {
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$0.open(
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anonymousCipherText: anyArray(),
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recipientPublicKey: anyArray(),
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recipientSecretKey: anyArray()
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)
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}
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.thenReturn([1, 2, 3])
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expect {
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try MessageReceiver.decryptWithSessionProtocol(
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ciphertext: "TestMessage".data(using: .utf8)!,
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using: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.publicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.privateKey)!.bytes
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),
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dependencies: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if it cannot verify the message") {
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mockSign
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.when { $0.verify(message: anyArray(), publicKey: anyArray(), signature: anyArray()) }
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.thenReturn(false)
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expect {
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try MessageReceiver.decryptWithSessionProtocol(
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ciphertext: "TestMessage".data(using: .utf8)!,
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using: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.publicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.privateKey)!.bytes
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),
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dependencies: dependencies
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)
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}
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.to(throwError(MessageReceiverError.invalidSignature))
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}
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it("throws an error if it cannot get the senders x25519 public key") {
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mockSign.when { $0.toX25519(ed25519PublicKey: anyArray()) }.thenReturn(nil)
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expect {
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try MessageReceiver.decryptWithSessionProtocol(
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ciphertext: "TestMessage".data(using: .utf8)!,
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using: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.publicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.privateKey)!.bytes
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),
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dependencies: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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}
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context("when decrypting with the blinded session protocol") {
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it("successfully decrypts a message") {
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let result = try? MessageReceiver.decryptWithSessionBlindingProtocol(
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data: Data(
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hex: "00db16b6687382811d69875a5376f66acad9c49fe5e26bcf770c7e6e9c230299" +
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"f61b315299dd1fa700dd7f34305c0465af9e64dc791d7f4123f1eeafa5b4d48b3ade4" +
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"f4b2a2764762e5a2c7900f254bd91633b43"
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: SMKDependencies()
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)
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expect(String(data: (result?.plaintext ?? Data()), encoding: .utf8)).to(equal("TestMessage"))
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expect(result?.senderX25519PublicKey)
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.to(equal("0588672ccb97f40bb57238989226cf429b575ba355443f47bc76c5ab144a96c65b"))
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}
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it("successfully decrypts a mocked incoming message") {
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let result = try? MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: false,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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expect(String(data: (result?.plaintext ?? Data()), encoding: .utf8)).to(equal("TestMessage"))
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expect(result?.senderX25519PublicKey)
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.to(equal("0588672ccb97f40bb57238989226cf429b575ba355443f47bc76c5ab144a96c65b"))
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}
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it("throws an error if the data is too short") {
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: Data([1, 2, 3]),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if it cannot get the blinded keyPair") {
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mockSodium
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.when { $0.blindedKeyPair(serverPublicKey: any(), edKeyPair: any(), genericHash: mockGenericHash) }
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.thenReturn(nil)
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if it cannot get the decryption key") {
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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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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if the data version is not 0") {
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([1]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if it cannot decrypt the data") {
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mockAeadXChaCha
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.when { $0.decrypt(authenticatedCipherText: anyArray(), secretKey: anyArray(), nonce: anyArray()) }
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.thenReturn(nil)
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if the inner bytes are too short") {
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mockAeadXChaCha
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.when { $0.decrypt(authenticatedCipherText: anyArray(), secretKey: anyArray(), nonce: anyArray()) }
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.thenReturn([1, 2, 3])
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.decryptionFailed))
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}
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it("throws an error if it cannot generate the blinding factor") {
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mockSodium
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.when { $0.generateBlindingFactor(serverPublicKey: any(), genericHash: mockGenericHash) }
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.thenReturn(nil)
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.invalidSignature))
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}
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it("throws an error if it cannot generate the combined key") {
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mockSodium
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.when { $0.combineKeys(lhsKeyBytes: anyArray(), rhsKeyBytes: anyArray()) }
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.thenReturn(nil)
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.invalidSignature))
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}
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it("throws an error if the combined key does not match kA") {
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mockSodium
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.when { $0.combineKeys(lhsKeyBytes: anyArray(), rhsKeyBytes: anyArray()) }
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.thenReturn(Data(hex: TestConstants.publicKey).bytes)
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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Data([0]) +
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"TestMessage".data(using: .utf8)! +
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Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
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),
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isOutgoing: true,
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otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
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with: TestConstants.serverPublicKey,
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userEd25519KeyPair: KeyPair(
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publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
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secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
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),
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using: dependencies
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)
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}
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.to(throwError(MessageReceiverError.invalidSignature))
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}
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it("throws an error if it cannot get the senders x25519 public key") {
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mockSign
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.when { $0.toX25519(ed25519PublicKey: anyArray()) }
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.thenReturn(nil)
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expect {
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try MessageReceiver.decryptWithSessionBlindingProtocol(
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data: (
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|
Data([0]) +
|
|
"TestMessage".data(using: .utf8)! +
|
|
Data(base64Encoded: "pbTUizreT0sqJ2R2LloseQDyVL2RYztD")!
|
|
),
|
|
isOutgoing: true,
|
|
otherBlindedPublicKey: "15\(TestConstants.blindedPublicKey)",
|
|
with: TestConstants.serverPublicKey,
|
|
userEd25519KeyPair: KeyPair(
|
|
publicKey: Data.data(fromHex: TestConstants.edPublicKey)!.bytes,
|
|
secretKey: Data.data(fromHex: TestConstants.edSecretKey)!.bytes
|
|
),
|
|
using: dependencies
|
|
)
|
|
}
|
|
.to(throwError(MessageReceiverError.decryptionFailed))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|