mirror of
https://github.com/XcodesOrg/XcodesApp.git
synced 2026-03-25 08:55:46 +00:00
(wip) SRP Login implementation
This commit is contained in:
Matt Kiazyk
parent
aca4e0ac89
commit
e04ed029de
20 changed files with 1726 additions and 3 deletions
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@ -3,7 +3,7 @@
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archiveVersion = 1;
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classes = {
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};
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objectVersion = 54;
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objectVersion = 60;
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objects = {
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/* Begin PBXBuildFile section */
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@ -122,6 +122,7 @@
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E84E4F522B323A5F003F3959 /* CornerRadiusModifier.swift in Sources */ = {isa = PBXBuildFile; fileRef = E84E4F512B323A5F003F3959 /* CornerRadiusModifier.swift */; };
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E84E4F542B333864003F3959 /* PlatformsListView.swift in Sources */ = {isa = PBXBuildFile; fileRef = E84E4F532B333864003F3959 /* PlatformsListView.swift */; };
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||||
E84E4F572B335094003F3959 /* OrderedCollections in Frameworks */ = {isa = PBXBuildFile; productRef = E84E4F562B335094003F3959 /* OrderedCollections */; };
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E862D43B2CC8B26F00BAA376 /* SRP in Frameworks */ = {isa = PBXBuildFile; productRef = E862D43A2CC8B26F00BAA376 /* SRP */; };
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E86671272B309D2F0048559A /* PlatformsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = E86671262B309D2F0048559A /* PlatformsView.swift */; };
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E87AB3C52939B65E00D72F43 /* Hardware.swift in Sources */ = {isa = PBXBuildFile; fileRef = E87AB3C42939B65E00D72F43 /* Hardware.swift */; };
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E87DD6EB25D053FA00D86808 /* Progress+.swift in Sources */ = {isa = PBXBuildFile; fileRef = E87DD6EA25D053FA00D86808 /* Progress+.swift */; };
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@ -358,6 +359,7 @@
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CA9FF86D25951C6E00E47BAF /* XCModel in Frameworks */,
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CABFA9F82592F0F900380FEE /* KeychainAccess in Frameworks */,
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E83FDC442CBB649100679C6B /* Sparkle in Frameworks */,
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E862D43B2CC8B26F00BAA376 /* SRP in Frameworks */,
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CAA858CD25A3D8BC00ACF8C0 /* ErrorHandling in Frameworks */,
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E8C0EB1A291EF43E0081528A /* XcodesKit in Frameworks */,
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E8FD5727291EE4AC001E004C /* AsyncNetworkService in Frameworks */,
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@ -723,6 +725,7 @@
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E84E4F562B335094003F3959 /* OrderedCollections */,
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E83FDC432CBB649100679C6B /* Sparkle */,
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334A932B2CA885A400A5E079 /* LibFido2Swift */,
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E862D43A2CC8B26F00BAA376 /* SRP */,
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);
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productName = XcodesMac;
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productReference = CAD2E79E2449574E00113D76 /* Xcodes.app */;
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@ -812,6 +815,7 @@
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E84E4F552B335094003F3959 /* XCRemoteSwiftPackageReference "swift-collections" */,
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E83FDC422CBB649100679C6B /* XCRemoteSwiftPackageReference "Sparkle" */,
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33027E282CA8BB5800CB387C /* XCRemoteSwiftPackageReference "LibFido2Swift" */,
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E862D4392CC8B26F00BAA376 /* XCLocalSwiftPackageReference "xcodes-srp" */,
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);
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productRefGroup = CAD2E79F2449574E00113D76 /* Products */;
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projectDirPath = "";
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@ -1480,6 +1484,13 @@
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};
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/* End XCConfigurationList section */
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/* Begin XCLocalSwiftPackageReference section */
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E862D4392CC8B26F00BAA376 /* XCLocalSwiftPackageReference "xcodes-srp" */ = {
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isa = XCLocalSwiftPackageReference;
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relativePath = "xcodes-srp";
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};
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/* End XCLocalSwiftPackageReference section */
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/* Begin XCRemoteSwiftPackageReference section */
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33027E282CA8BB5800CB387C /* XCRemoteSwiftPackageReference "LibFido2Swift" */ = {
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isa = XCRemoteSwiftPackageReference;
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@ -1646,6 +1657,10 @@
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package = E84E4F552B335094003F3959 /* XCRemoteSwiftPackageReference "swift-collections" */;
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productName = OrderedCollections;
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};
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E862D43A2CC8B26F00BAA376 /* SRP */ = {
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isa = XCSwiftPackageProductDependency;
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productName = SRP;
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};
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E8C0EB19291EF43E0081528A /* XcodesKit */ = {
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isa = XCSwiftPackageProductDependency;
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productName = XcodesKit;
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@ -10,6 +10,15 @@
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"version": null
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}
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},
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{
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"package": "big-num",
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"repositoryURL": "https://github.com/adam-fowler/big-num",
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"state": {
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"branch": null,
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"revision": "5c5511ad06aeb2b97d0868f7394e14a624bfb1c7",
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"version": "2.0.2"
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}
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},
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{
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"package": "CombineExpectations",
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"repositoryURL": "https://github.com/groue/CombineExpectations",
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@ -100,6 +109,15 @@
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"version": "1.0.5"
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}
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},
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{
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"package": "swift-crypto",
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"repositoryURL": "https://github.com/apple/swift-crypto",
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"state": {
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"branch": null,
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"revision": "ddb07e896a2a8af79512543b1c7eb9797f8898a5",
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"version": "1.1.7"
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}
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},
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{
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"package": "SwiftSoup",
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"repositoryURL": "https://github.com/scinfu/SwiftSoup",
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@ -5,7 +5,7 @@ import PackageDescription
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let package = Package(
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name: "AppleAPI",
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platforms: [.macOS(.v10_15)],
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platforms: [.macOS(.v11)],
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products: [
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// Products define the executables and libraries a package produces, and make them visible to other packages.
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.library(
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@ -1,5 +1,8 @@
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import Foundation
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import Combine
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import SRP
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import Crypto
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import CommonCrypto
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public class Client {
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private static let authTypes = ["sa", "hsa", "non-sa", "hsa2"]
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@ -8,6 +11,144 @@ public class Client {
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// MARK: - Login
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public func srpLogin(accountName: String, password: String) -> AnyPublisher<AuthenticationState, Swift.Error> {
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var serviceKey: String!
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let config = SRPConfiguration<SHA256>(.N2048)
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let client = SRPClient(configuration: config)
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let clientKeys = client.generateKeys()
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return Current.network.dataTask(with: URLRequest.itcServiceKey)
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.map(\.data)
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.decode(type: ServiceKeyResponse.self, decoder: JSONDecoder())
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.flatMap { serviceKeyResponse -> AnyPublisher<(String, String), Swift.Error> in
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serviceKey = serviceKeyResponse.authServiceKey
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// Fixes issue https://github.com/RobotsAndPencils/XcodesApp/issues/360
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// On 2023-02-23, Apple added a custom implementation of hashcash to their auth flow
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// Without this addition, Apple ID's would get set to locked
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return self.loadHashcash(accountName: accountName, serviceKey: serviceKey)
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.map { return (serviceKey, $0)}
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.eraseToAnyPublisher()
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}
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.flatMap { (serviceKey, hashcash) -> AnyPublisher<(String, String, ServerSRPInitResponse), Swift.Error> in
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return Current.network.dataTask(with: URLRequest.SRPInit(serviceKey: serviceKey, a: clientKeys.private.hex, accountName: accountName))
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.map(\.data)
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.decode(type: ServerSRPInitResponse.self, decoder: JSONDecoder())
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.map { return (serviceKey, hashcash, $0) }
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.eraseToAnyPublisher()
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}
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.flatMap { (serviceKey, hashcash, srpInit) -> AnyPublisher<URLSession.DataTaskPublisher.Output, Swift.Error> in
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guard let decodedB = Data(base64Encoded: srpInit.b) else {
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return Fail(error: AuthenticationError.srpInvalidPublicKey)
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.eraseToAnyPublisher()
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}
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guard let decodedSalt = Data(base64Encoded: srpInit.salt) else {
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return Fail(error: AuthenticationError.srpInvalidPublicKey)
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.eraseToAnyPublisher()
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}
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let iterations = srpInit.iteration
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let serverPublic = SRPKey([UInt8](decodedB))
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guard let encryptedPassword = self.pbkdf2(password: password, saltData: decodedSalt, keyByteCount: 32, prf: CCPseudoRandomAlgorithm(kCCPRFHmacAlgSHA256), rounds: iterations) else {
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return Fail(error: AuthenticationError.srpInvalidPublicKey)
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.eraseToAnyPublisher()
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}
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let encryptedPasswordArray = encryptedPassword.hexEncodedString()
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print("EncryptedPassword: \(encryptedPasswordArray)")
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print("EncryptedPassword: \([UInt8](encryptedPassword))")
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do {
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// this calculates "S"
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let clientSharedSecret = try client.calculateSharedSecret(
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encryptedPassword: encryptedPasswordArray,
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salt: [UInt8](decodedSalt),
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clientKeys: clientKeys,
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serverPublicKey: serverPublic
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)
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print("SharedSecret: \(clientSharedSecret)")
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let m1 = client.calculateClientProof(
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username: accountName,
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salt: [UInt8](decodedSalt),
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clientPublicKey: clientKeys.public,
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serverPublicKey: serverPublic,
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sharedSecret: clientSharedSecret
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)
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let m2 = client.serverProof(clientProof: m1, clientKeys: clientKeys, sharedSecret: clientSharedSecret)
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print("M1: \(Data(m1).base64EncodedString())")
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print("M2: \(Data(m2).base64EncodedString())")
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return Current.network.dataTask(with: URLRequest.SRPComplete(serviceKey: serviceKey, hashcash: hashcash, accountName: accountName, c: srpInit.c, m1: Data(m1).base64EncodedString(), m2: Data(m2).base64EncodedString()))
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.mapError { $0 as Swift.Error }
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.eraseToAnyPublisher()
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} catch {
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print("Error: calculateSharedSecret \(error)")
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return Fail(error: AuthenticationError.srpInvalidPublicKey)
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.eraseToAnyPublisher()
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}
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}
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.flatMap { result -> AnyPublisher<AuthenticationState, Swift.Error> in
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let (data, response) = result
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return Just(data)
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.decode(type: SignInResponse.self, decoder: JSONDecoder())
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.flatMap { responseBody -> AnyPublisher<AuthenticationState, Swift.Error> in
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let httpResponse = response as! HTTPURLResponse
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switch httpResponse.statusCode {
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case 200:
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return Current.network.dataTask(with: URLRequest.olympusSession)
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.map { _ in AuthenticationState.authenticated }
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.mapError { $0 as Swift.Error }
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.eraseToAnyPublisher()
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case 401:
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return Fail(error: AuthenticationError.invalidUsernameOrPassword(username: accountName))
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.eraseToAnyPublisher()
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case 403:
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let errorMessage = responseBody.serviceErrors?.first?.description.replacingOccurrences(of: "-20209: ", with: "") ?? ""
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return Fail(error: AuthenticationError.accountLocked(errorMessage))
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.eraseToAnyPublisher()
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case 409:
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return self.handleTwoStepOrFactor(data: data, response: response, serviceKey: serviceKey)
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case 412 where Client.authTypes.contains(responseBody.authType ?? ""):
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return Fail(error: AuthenticationError.appleIDAndPrivacyAcknowledgementRequired)
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.eraseToAnyPublisher()
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default:
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return Fail(error: AuthenticationError.unexpectedSignInResponse(statusCode: httpResponse.statusCode,
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message: responseBody.serviceErrors?.map { $0.description }.joined(separator: ", ")))
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.eraseToAnyPublisher()
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}
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}
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.eraseToAnyPublisher()
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}
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// .map(\.data)
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// .decode(type: ServerSRPInitResponse.self, decoder: JSONDecoder())
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//
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//
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//
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// .flatMap { result -> AnyPublisher<AuthenticationState, Swift.Error> in
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// return ("")
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// }
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// .flatMap { serverResponse -> AnyPublisher<AuthenticationState, Error> in
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// print(serverResponse)
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// return Fail(error: AuthenticationError.accountUsesTwoStepAuthentication)
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// .eraseToAnyPublisher()
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// }
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.mapError { $0 as Swift.Error }
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.eraseToAnyPublisher()
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}
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public func login(accountName: String, password: String) -> AnyPublisher<AuthenticationState, Swift.Error> {
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var serviceKey: String!
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@ -257,6 +398,32 @@ public class Client {
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.mapError { $0 as Error }
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.eraseToAnyPublisher()
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}
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private func pbkdf2(password: String, saltData: Data, keyByteCount: Int, prf: CCPseudoRandomAlgorithm, rounds: Int) -> Data? {
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guard let passwordData = password.data(using: .utf8) else { return nil }
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var derivedKeyData = Data(repeating: 0, count: keyByteCount)
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let derivedCount = derivedKeyData.count
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let derivationStatus: Int32 = derivedKeyData.withUnsafeMutableBytes { derivedKeyBytes in
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let keyBuffer: UnsafeMutablePointer<UInt8> =
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derivedKeyBytes.baseAddress!.assumingMemoryBound(to: UInt8.self)
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return saltData.withUnsafeBytes { saltBytes -> Int32 in
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let saltBuffer: UnsafePointer<UInt8> = saltBytes.baseAddress!.assumingMemoryBound(to: UInt8.self)
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return CCKeyDerivationPBKDF(
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CCPBKDFAlgorithm(kCCPBKDF2),
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password,
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passwordData.count,
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saltBuffer,
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saltData.count,
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prf,
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UInt32(rounds),
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keyBuffer,
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derivedCount)
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}
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}
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return derivationStatus == kCCSuccess ? derivedKeyData : nil
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}
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}
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// MARK: - Types
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@ -282,6 +449,7 @@ public enum AuthenticationError: Swift.Error, LocalizedError, Equatable {
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case notDeveloperAppleId
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case notAuthorized
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case invalidResult(resultString: String?)
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case srpInvalidPublicKey
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public var errorDescription: String? {
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switch self {
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@ -316,6 +484,8 @@ public enum AuthenticationError: Swift.Error, LocalizedError, Equatable {
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return "You are not authorized. Please Sign in with your Apple ID first."
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case let .invalidResult(resultString):
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return resultString ?? "If you continue to have problems, please submit a bug report in the Help menu."
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case .srpInvalidPublicKey:
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return "Invalid Key"
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}
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}
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}
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@ -495,3 +665,23 @@ public struct AppleProvider: Decodable, Equatable {
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public struct AppleUser: Decodable, Equatable {
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public let fullName: String
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}
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public struct ServerSRPInitResponse: Decodable {
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let iteration: Int
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let salt: String
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let b: String
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let c: String
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}
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extension String {
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func base64ToU8Array() -> Data {
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return Data(base64Encoded: self) ?? Data()
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}
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}
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extension Data {
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func hexEncodedString() -> String {
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return map { String(format: "%02hhx", $0) }.joined()
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}
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}
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@ -10,6 +10,10 @@ public extension URL {
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static let federate = URL(string: "https://idmsa.apple.com/appleauth/auth/federate")!
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static let olympusSession = URL(string: "https://appstoreconnect.apple.com/olympus/v1/session")!
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static let keyAuth = URL(string: "https://idmsa.apple.com/appleauth/auth/verify/security/key")!
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static let srpInit = URL(string: "https://idmsa.apple.com/appleauth/auth/signin/init")!
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static let srpComplete = URL(string: "https://idmsa.apple.com/appleauth/auth/signin/complete?isRememberMeEnabled=false")!
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}
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public extension URLRequest {
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@ -150,4 +154,51 @@ public extension URLRequest {
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return request
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}
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static func SRPInit(serviceKey: String, a: String, accountName: String) -> URLRequest {
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struct ServerSRPInitRequest: Encodable {
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public let a: String
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public let accountName: String
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public let protocols: [SRPProtocol]
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}
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var request = URLRequest(url: .srpInit)
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request.httpMethod = "POST"
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request.allHTTPHeaderFields = request.allHTTPHeaderFields ?? [:]
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request.allHTTPHeaderFields?["Accept"] = "application/json"
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request.allHTTPHeaderFields?["Content-Type"] = "application/json"
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request.allHTTPHeaderFields?["X-Requested-With"] = "XMLHttpRequest"
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request.allHTTPHeaderFields?["X-Apple-Widget-Key"] = serviceKey
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request.httpBody = try? JSONEncoder().encode(ServerSRPInitRequest(a: a, accountName: accountName, protocols: [.s2k, .s2k_fo]))
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return request
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}
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static func SRPComplete(serviceKey: String, hashcash: String, accountName: String, c: String, m1: String, m2: String) -> URLRequest {
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struct ServerSRPCompleteRequest: Encodable {
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let accountName: String
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let c: String
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let m1: String
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let m2: String
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let rememberMe: Bool
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}
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var request = URLRequest(url: .srpComplete)
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request.httpMethod = "POST"
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request.allHTTPHeaderFields = request.allHTTPHeaderFields ?? [:]
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request.allHTTPHeaderFields?["Accept"] = "application/json"
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request.allHTTPHeaderFields?["Content-Type"] = "application/json"
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request.allHTTPHeaderFields?["X-Requested-With"] = "XMLHttpRequest"
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request.allHTTPHeaderFields?["X-Apple-Widget-Key"] = serviceKey
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request.allHTTPHeaderFields?["X-Apple-HC"] = hashcash
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request.httpBody = try? JSONEncoder().encode(ServerSRPCompleteRequest(accountName: accountName, c: c, m1: m1, m2: m2, rememberMe: false))
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return request
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}
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}
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public enum SRPProtocol: String, Codable {
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case s2k, s2k_fo
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}
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|
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@ -288,7 +288,7 @@ class AppState: ObservableObject {
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Current.defaults.set(username, forKey: "username")
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isProcessingAuthRequest = true
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return client.login(accountName: username, password: password)
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return client.srpLogin(accountName: username, password: password)
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.receive(on: DispatchQueue.main)
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.handleEvents(
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receiveOutput: { authenticationState in
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|||
|
|
@ -31,6 +31,32 @@ SOFTWARE.\
|
|||
\
|
||||
\
|
||||
|
||||
\fs34 BigInt\
|
||||
\
|
||||
|
||||
\fs26 \
|
||||
Copyright (c) 2016-2017 K\'e1roly L\uc0\u337 rentey\
|
||||
\
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy\
|
||||
of this software and associated documentation files (the "Software"), to deal\
|
||||
in the Software without restriction, including without limitation the rights\
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\
|
||||
copies of the Software, and to permit persons to whom the Software is\
|
||||
furnished to do so, subject to the following conditions:\
|
||||
\
|
||||
The above copyright notice and this permission notice shall be included in all\
|
||||
copies or substantial portions of the Software.\
|
||||
\
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\
|
||||
SOFTWARE.\
|
||||
\
|
||||
\
|
||||
|
||||
\fs34 SwiftSoup\
|
||||
\
|
||||
|
||||
|
|
@ -113,6 +139,241 @@ SOFTWARE.\
|
|||
\
|
||||
\
|
||||
|
||||
\fs34 big-num\
|
||||
\
|
||||
|
||||
\fs26 MIT License\
|
||||
\
|
||||
Copyright (c) 2019 Adam Fowler\
|
||||
\
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy\
|
||||
of this software and associated documentation files (the "Software"), to deal\
|
||||
in the Software without restriction, including without limitation the rights\
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\
|
||||
copies of the Software, and to permit persons to whom the Software is\
|
||||
furnished to do so, subject to the following conditions:\
|
||||
\
|
||||
The above copyright notice and this permission notice shall be included in all\
|
||||
copies or substantial portions of the Software.\
|
||||
\
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\
|
||||
SOFTWARE.\
|
||||
\
|
||||
\
|
||||
|
||||
\fs34 swift-crypto\
|
||||
\
|
||||
|
||||
\fs26 \
|
||||
Apache License\
|
||||
Version 2.0, January 2004\
|
||||
http://www.apache.org/licenses/\
|
||||
\
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION\
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|
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END OF TERMS AND CONDITIONS\
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To apply the Apache License to your work, attach the following\
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\
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\
|
||||
|
||||
\fs34 Path.swift\
|
||||
\
|
||||
|
||||
|
|
|
|||
201
xcodes-srp/LICENSE
Normal file
201
xcodes-srp/LICENSE
Normal file
|
|
@ -0,0 +1,201 @@
|
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Apache License
|
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Version 2.0, January 2004
|
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http://www.apache.org/licenses/
|
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|
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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||||
1. Definitions.
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||||
"License" shall mean the terms and conditions for use, reproduction,
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||||
Notwithstanding the above, nothing herein shall supersede or modify
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||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
26
xcodes-srp/Package.swift
Normal file
26
xcodes-srp/Package.swift
Normal file
|
|
@ -0,0 +1,26 @@
|
|||
// swift-tools-version:5.1
|
||||
// The swift-tools-version declares the minimum version of Swift required to build this package.
|
||||
|
||||
import PackageDescription
|
||||
|
||||
let package = Package(
|
||||
name: "swift-srp",
|
||||
platforms: [
|
||||
.macOS(.v10_15),
|
||||
.iOS(.v13),
|
||||
.watchOS(.v6),
|
||||
.tvOS(.v13),
|
||||
],
|
||||
products: [
|
||||
.library(name: "SRP", targets: ["SRP"]),
|
||||
],
|
||||
dependencies: [
|
||||
.package(url: "https://github.com/apple/swift-crypto", from: "1.0.0"),
|
||||
.package(url: "https://github.com/adam-fowler/big-num", from: "2.0.0"),
|
||||
],
|
||||
targets: [
|
||||
.target(name: "SRP", dependencies: ["BigNum", "Crypto"]),
|
||||
.testTarget(
|
||||
name: "SRPTests", dependencies: ["SRP"]),
|
||||
]
|
||||
)
|
||||
94
xcodes-srp/README.md
Normal file
94
xcodes-srp/README.md
Normal file
|
|
@ -0,0 +1,94 @@
|
|||
# Swift SRP
|
||||
|
||||
This library provides a swift implementation of the Secure Remote Password protocol. Secure Remote Password (SRP) provides username and password authentication without needing to provide your password to the server. As the server never sees your password it can never leak it to anyone else.
|
||||
|
||||
The server is provided with a cryptographic verifier that is derived from the password and a salt value that was used in the generation of this verifier. Both client and server generate large private and public keys and with these are able to generate a shared secret. The client then sends a proof they have the secret and if it is verified the server will do the same to verify the server as well.
|
||||
|
||||
The SRP protocol is detailed in [RFC2945](https://tools.ietf.org/html/rfc2945). This library implements version 6a of the protocol which includes the username in the salt to avoid the issue where a malicious server attempting to learn if two users have the same password. I believe it is also compliant with [RFC5054](https://tools.ietf.org/html/rfc5054).
|
||||
|
||||
# Usage
|
||||
|
||||
First you create a configuration object. This will hold the hashing algorithm you are using, the large safe prime number required and a generator value. There is an enum that holds example primes and generators. It is general safer to use these as they are the ones provided in RFC5054 and have been battle tested. The following generates a configuration using SHA256 and a 2048 bit safe prime. You need to be sure both client and server use the same configuration.
|
||||
```swift
|
||||
let configuration = SRPConfiguration<SHA256>(.N2048)
|
||||
```
|
||||
When the client wants to create a new user they generate a salt and password verifier for their username and password.
|
||||
```swift
|
||||
let client = SRPClient(configuration: configuration)
|
||||
let (salt, verifier) = client.generateSaltAndVerifier(username: username, password: password)
|
||||
```
|
||||
These are passed to the server who will store them alongside the username in a database.
|
||||
|
||||
When the client wants to authenticate with the server they first need to generate a public/private key pair. These keys should only be used once. If you want to authenticate again you should generate a new pair.
|
||||
```swift
|
||||
let client = SRPClient(configuration: configuration)
|
||||
let clientKeys = client.generateKeys()
|
||||
let clientPublicKey = clientKeys.public
|
||||
```
|
||||
The contents of the `clientPublicKey` variable is passed to the server alongside the username to initiate authentication.
|
||||
|
||||
The server will then find the username in its database and extract the password verifier and salt that was stored with it. The password verifier is used to generate the servers key pair.
|
||||
```swift
|
||||
let server = SRPServer(configuration: configuration)
|
||||
let serverKeys = server.generateKeys(verifier: values.verifier)
|
||||
let serverPublicKey = serverKeys.public
|
||||
```
|
||||
The server replies with the `serverPublicKey` and the salt value associated with the user. At this point the server will need to store the `serverKeys` and the public key it received from the client, most likely in a database.
|
||||
|
||||
The client then creates the shared secret using the username, password, salt, its own key pair and the server public key. It then has to generate a proof it has the shared secret. This proof is generated from shared secret plus any of the public data available.
|
||||
```swift
|
||||
let clientSharedSecret = try client.calculateSharedSecret(
|
||||
username: username,
|
||||
password: password,
|
||||
salt: salt,
|
||||
clientKeys: clientKeys,
|
||||
serverPublicKey: serverPublicKey
|
||||
)
|
||||
let clientProof = client.calculateClientProof(
|
||||
username: username,
|
||||
salt: salt,
|
||||
clientPublicKey: clientKeys.public,
|
||||
serverPublicKey: serverPublicKey,
|
||||
sharedSecret: clientSharedSecret
|
||||
)
|
||||
```
|
||||
This `clientProof` is passed to the server. The server then generates its own version of the shared secret and verifies the `clientProof` is valid and if so will respond with it's own proof that it has the shared secret.
|
||||
```swift
|
||||
let serverSharedSecret = try server.calculateSharedSecret(
|
||||
clientPublicKey: clientPublicKey,
|
||||
serverKeys: serverKeys,
|
||||
verifier: verifier
|
||||
)
|
||||
let serverProof = try server.verifyClientProof(
|
||||
proof: clientProof,
|
||||
username: username,
|
||||
salt: salt,
|
||||
clientPublicKey: clientPublicKey,
|
||||
serverPublicKey: serverKeys.public,
|
||||
sharedSecret: serverSharedSecret
|
||||
)
|
||||
```
|
||||
And finally the client can verify the server proof is valid
|
||||
```swift
|
||||
try client.verifyServerProof(
|
||||
serverProof: serverProof,
|
||||
clientProof: clientProof,
|
||||
clientKeys: clientKeys,
|
||||
sharedSecret: clientSharedSecret
|
||||
)
|
||||
```
|
||||
If at any point any of these functions fail the process should be aborted.
|
||||
|
||||
# Compatibility
|
||||
|
||||
The library is compliant with RFC5054 and should work with any server implementing this. The library has been verified against
|
||||
- example data in RFC5054
|
||||
- Mozilla test vectors in https://wiki.mozilla.org/Identity/AttachedServices/KeyServerProtocol#SRP_Verifier
|
||||
- Python library [srptools](https://github.com/idlesign/srptools)
|
||||
- Typescript library [tssrp6a](https://github.com/midonet/tssrp6a)
|
||||
|
||||
## Proof of secret
|
||||
|
||||
For generating the proof above I use the method detailed in [RFC2945](https://tools.ietf.org/html/rfc2945#section-3) but not all servers use this method. For this reason I have kept the sharedSecret generation separate from the proof generation, so you can insert your own version.
|
||||
|
||||
I have also supplied a simple proof functions `server.verifySimpleClientProof` and `client.verifySimpleServerProof` which use the proof detailed in the Wikipedia [page](https://en.wikipedia.org/wiki/Secure_Remote_Password_protocol) on Secure Remote Password if you would prefer to use these.
|
||||
29
xcodes-srp/Sources/SRP/Array.swift
Normal file
29
xcodes-srp/Sources/SRP/Array.swift
Normal file
|
|
@ -0,0 +1,29 @@
|
|||
|
||||
extension Array where Element: FixedWidthInteger {
|
||||
/// create array of random bytes
|
||||
static func random(count: Int) -> [Element] {
|
||||
var array = self.init()
|
||||
for _ in 0..<count {
|
||||
array.append(.random(in: Element.min..<Element.max))
|
||||
}
|
||||
return array
|
||||
}
|
||||
|
||||
/// generate a hexdigest of the array of bytes
|
||||
func hexdigest() -> String {
|
||||
return self.map({
|
||||
let characters = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"]
|
||||
return "\(characters[Int($0 >> 4)])\(characters[Int($0 & 0xf)])"
|
||||
}).joined()
|
||||
}
|
||||
}
|
||||
|
||||
/// xor together the contents of two byte arrays
|
||||
func ^ (lhs: [UInt8], rhs: [UInt8]) -> [UInt8] {
|
||||
precondition(lhs.count == rhs.count, "Arrays are required to be the same size")
|
||||
var result = lhs
|
||||
for i in 0..<lhs.count {
|
||||
result[i] = result[i] ^ rhs[i]
|
||||
}
|
||||
return result
|
||||
}
|
||||
182
xcodes-srp/Sources/SRP/client.swift
Normal file
182
xcodes-srp/Sources/SRP/client.swift
Normal file
|
|
@ -0,0 +1,182 @@
|
|||
import BigNum
|
||||
import Crypto
|
||||
|
||||
/// Manages the client side of Secure Remote Password
|
||||
///
|
||||
/// Secure Remote Password (SRP) provides username and password authentication without needing to provide your password to the server. The server
|
||||
/// has a cryptographic verifier that is derived from the password and a salt that was used to generate this verifier. Both client and server
|
||||
/// generate a shared secret then the client sends a proof they have the secret and if it is correct the server will do the same to verify the
|
||||
/// server as well.
|
||||
///
|
||||
/// This version is compliant with SRP version 6a and RFC 5054.
|
||||
///
|
||||
/// Reference reading
|
||||
/// - https://tools.ietf.org/html/rfc2945
|
||||
/// - https://tools.ietf.org/html/rfc5054
|
||||
///
|
||||
public struct SRPClient<H: HashFunction> {
|
||||
/// configuration. This needs to be the same as the server configuration
|
||||
public let configuration: SRPConfiguration<H>
|
||||
|
||||
/// Initialise a SRPClient object
|
||||
/// - Parameter configuration: configuration to use
|
||||
public init(configuration: SRPConfiguration<H>) {
|
||||
self.configuration = configuration
|
||||
}
|
||||
|
||||
/// Initiate the authentication process
|
||||
/// - Returns: An authentication state. The A value from this state should be sent to the server
|
||||
public func generateKeys() -> SRPKeyPair {
|
||||
var a = BigNum()
|
||||
var A = BigNum()
|
||||
repeat {
|
||||
a = BigNum(bytes: SymmetricKey(size: .bits256))
|
||||
A = configuration.g.power(a, modulus: configuration.N)
|
||||
} while A % configuration.N == BigNum(0)
|
||||
|
||||
return SRPKeyPair(public: SRPKey(A), private: SRPKey(a))
|
||||
}
|
||||
|
||||
/// return shared secret given the username, password, B value and salt from the server
|
||||
/// - Parameters:
|
||||
/// - username: user identifier
|
||||
/// - password: password
|
||||
/// - salt: salt
|
||||
/// - clientKeys: client public/private keys
|
||||
/// - serverPublicKey: server public key
|
||||
/// - Throws: `nullServerKey`
|
||||
/// - Returns: shared secret
|
||||
public func calculateSharedSecret(username: String, password: String, salt: [UInt8], clientKeys: SRPKeyPair, serverPublicKey: SRPKey) throws -> SRPKey {
|
||||
let message = [UInt8]("\(username):\(password)".utf8)
|
||||
let sharedSecret = try calculateSharedSecret(message: message, salt: salt, clientKeys: clientKeys, serverPublicKey: serverPublicKey)
|
||||
return SRPKey(sharedSecret)
|
||||
}
|
||||
|
||||
/// return shared secret given the username, password, B value and salt from the server
|
||||
/// - Parameters:
|
||||
/// - username: user identifier
|
||||
/// - password: password
|
||||
/// - salt: salt
|
||||
/// - clientKeys: client public/private keys
|
||||
/// - serverPublicKey: server public key
|
||||
/// - Throws: `nullServerKey`
|
||||
/// - Returns: shared secret
|
||||
public func calculateSharedSecret(encryptedPassword: String, salt: [UInt8], clientKeys: SRPKeyPair, serverPublicKey: SRPKey) throws -> SRPKey {
|
||||
let message = [UInt8](":\(encryptedPassword)".utf8)
|
||||
let sharedSecret = try calculateSharedSecret(message: message, salt: salt, clientKeys: clientKeys, serverPublicKey: serverPublicKey)
|
||||
return SRPKey(sharedSecret)
|
||||
}
|
||||
|
||||
|
||||
/// calculate proof of shared secret to send to server
|
||||
/// - Parameters:
|
||||
/// - clientPublicKey: client public key
|
||||
/// - serverPublicKey: server public key
|
||||
/// - sharedSecret: shared secret
|
||||
/// - Returns: The client verification code which should be passed to the server
|
||||
public func calculateSimpleClientProof(clientPublicKey: SRPKey, serverPublicKey: SRPKey, sharedSecret: SRPKey) -> [UInt8] {
|
||||
// get verification code
|
||||
return SRP<H>.calculateSimpleClientProof(clientPublicKey: clientPublicKey, serverPublicKey: serverPublicKey, sharedSecret: sharedSecret)
|
||||
}
|
||||
|
||||
/// If the server returns that the client verification code was valiid it will also return a server verification code that the client can use to verify the server is correct
|
||||
///
|
||||
/// - Parameters:
|
||||
/// - code: Verification code returned by server
|
||||
/// - state: Authentication state
|
||||
/// - Throws: `requiresVerificationKey`, `invalidServerCode`
|
||||
public func verifySimpleServerProof(serverProof: [UInt8], clientProof: [UInt8], clientKeys: SRPKeyPair, sharedSecret: SRPKey) throws {
|
||||
// get out version of server proof
|
||||
let HAMS = SRP<H>.calculateSimpleServerVerification(clientPublicKey: clientKeys.public, clientProof: clientProof, sharedSecret: sharedSecret)
|
||||
// is it the same
|
||||
guard serverProof == HAMS else { throw SRPClientError.invalidServerCode }
|
||||
}
|
||||
|
||||
/// calculate proof of shared secret to send to server
|
||||
/// - Parameters:
|
||||
/// - username: username
|
||||
/// - salt: The salt value associated with the user returned by the server
|
||||
/// - clientPublicKey: client public key
|
||||
/// - serverPublicKey: server public key
|
||||
/// - sharedSecret: shared secret
|
||||
/// - Returns: The client verification code which should be passed to the server
|
||||
public func calculateClientProof(username: String, salt: [UInt8], clientPublicKey: SRPKey, serverPublicKey: SRPKey, sharedSecret: SRPKey) -> [UInt8] {
|
||||
|
||||
let hashSharedSecret = [UInt8](H.hash(data: sharedSecret.bytes))
|
||||
|
||||
// get verification code
|
||||
return SRP<H>.calculateClientProof(configuration: configuration, username: username, salt: salt, clientPublicKey: clientPublicKey, serverPublicKey: serverPublicKey, hashSharedSecret: hashSharedSecret)
|
||||
}
|
||||
|
||||
/// If the server returns that the client verification code was valiid it will also return a server verification code that the client can use to verify the server is correct
|
||||
///
|
||||
/// - Parameters:
|
||||
/// - code: Verification code returned by server
|
||||
/// - state: Authentication state
|
||||
/// - Throws: `requiresVerificationKey`, `invalidServerCode`
|
||||
public func verifyServerProof(serverProof: [UInt8], clientProof: [UInt8], clientKeys: SRPKeyPair, sharedSecret: SRPKey) throws {
|
||||
let hashSharedSecret = [UInt8](H.hash(data: sharedSecret.bytes))
|
||||
// get out version of server proof
|
||||
let HAMK = SRP<H>.calculateServerVerification(clientPublicKey: clientKeys.public, clientProof: clientProof, sharedSecret: hashSharedSecret)
|
||||
// is it the same
|
||||
guard serverProof == HAMK else { throw SRPClientError.invalidServerCode }
|
||||
}
|
||||
|
||||
|
||||
/// If the server returns that the client verification code was valiid it will also return a server verification code that the client can use to verify the server is correct
|
||||
///
|
||||
/// - Parameters:
|
||||
/// - code: Verification code returned by server
|
||||
/// - state: Authentication state
|
||||
/// - Throws: `requiresVerificationKey`, `invalidServerCode`
|
||||
public func serverProof(clientProof: [UInt8], clientKeys: SRPKeyPair, sharedSecret: SRPKey) -> [UInt8] {
|
||||
let hashSharedSecret = [UInt8](H.hash(data: sharedSecret.bytes))
|
||||
|
||||
return SRP<H>.calculateServerVerification(clientPublicKey: clientKeys.public, clientProof: clientProof, sharedSecret: hashSharedSecret)
|
||||
}
|
||||
|
||||
/// Generate salt and password verifier from username and password. When creating your user instead of passing your password to the server, you
|
||||
/// pass the salt and password verifier values. In this way the server never knows your password so can never leak it.
|
||||
///
|
||||
/// - Parameters:
|
||||
/// - username: username
|
||||
/// - password: user password
|
||||
/// - Returns: tuple containing salt and password verifier
|
||||
public func generateSaltAndVerifier(username: String, password: String) -> (salt: [UInt8], verifier: SRPKey) {
|
||||
let salt = [UInt8].random(count: 16)
|
||||
let verifier = generatePasswordVerifier(username: username, password: password, salt: salt)
|
||||
return (salt: salt, verifier: SRPKey(verifier))
|
||||
}
|
||||
}
|
||||
|
||||
extension SRPClient {
|
||||
/// return shared secret given the username, password, B value and salt from the server
|
||||
func calculateSharedSecret(message: [UInt8], salt: [UInt8], clientKeys: SRPKeyPair, serverPublicKey: SRPKey) throws -> BigNum {
|
||||
guard serverPublicKey.number % configuration.N != BigNum(0) else { throw SRPClientError.nullServerKey }
|
||||
|
||||
// calculate u = H(clientPublicKey | serverPublicKey)
|
||||
let u = SRP<H>.calculateU(clientPublicKey: clientKeys.public.bytes, serverPublicKey: serverPublicKey.bytes, pad: configuration.sizeN)
|
||||
|
||||
guard u != 0 else { throw SRPClientError.nullServerKey }
|
||||
|
||||
let x = BigNum(bytes: [UInt8](H.hash(data: salt + H.hash(data: message))))
|
||||
|
||||
// calculate S = (B - k*g^x)^(a+u*x)
|
||||
let S = (serverPublicKey.number - configuration.k * configuration.g.power(x, modulus: configuration.N)).power(clientKeys.private.number + u * x, modulus: configuration.N)
|
||||
|
||||
return S
|
||||
}
|
||||
|
||||
/// generate password verifier
|
||||
public func generatePasswordVerifier(username: String, password: String, salt: [UInt8]) -> BigNum {
|
||||
let message = "\(username):\(password)"
|
||||
return generatePasswordVerifier(message: [UInt8](message.utf8), salt: salt)
|
||||
}
|
||||
|
||||
/// generate password verifier
|
||||
public func generatePasswordVerifier(message: [UInt8], salt: [UInt8]) -> BigNum {
|
||||
let x = BigNum(bytes: [UInt8](H.hash(data: salt + H.hash(data: message))))
|
||||
let verifier = configuration.g.power(x, modulus: configuration.N)
|
||||
return verifier
|
||||
}
|
||||
}
|
||||
201
xcodes-srp/Sources/SRP/configuration.swift
Normal file
201
xcodes-srp/Sources/SRP/configuration.swift
Normal file
|
|
@ -0,0 +1,201 @@
|
|||
import BigNum
|
||||
import Crypto
|
||||
|
||||
/// SRP Configuration. The same configuration hast to be used by both client and server. Contains a large safe prime N ie a prime where the value (N-1)/2 is also a prime, g the multiplicative group generator and the value k = Hash(N | g)
|
||||
public struct SRPConfiguration<H: HashFunction> {
|
||||
/// large safe prime
|
||||
public let N: BigNum
|
||||
/// multiplicative group generator
|
||||
public let g: BigNum
|
||||
/// derived value from N and g. k = H( N | g )
|
||||
public let k: BigNum
|
||||
/// size in bytes of N
|
||||
public let sizeN: Int
|
||||
|
||||
/// Initialise SRPConfiguration with known safe prime
|
||||
/// - Parameter prime: enum indicating size of prime
|
||||
public init(_ prime: Prime) {
|
||||
self.N = prime.group
|
||||
self.sizeN = Int(self.N.numBits() + 7) / 8
|
||||
self.g = prime.generator
|
||||
self.k = BigNum(bytes: [UInt8](H.hash(data: self.N.bytes + SRP<H>.pad(self.g.bytes, to: sizeN))))
|
||||
}
|
||||
|
||||
/// Initialise SRPConfiguration with your own prime and multiplicative group generator
|
||||
/// - Parameters:
|
||||
/// - N: Large prime
|
||||
/// - g: multiplicative group generator (usually 2)
|
||||
public init(N: BigNum, g: BigNum) {
|
||||
self.N = N
|
||||
self.sizeN = Int(self.N.numBits() + 7) / 8
|
||||
self.g = g
|
||||
self.k = BigNum(bytes: [UInt8](H.hash(data: self.N.bytes + SRP<H>.pad(self.g.bytes, to: sizeN))))
|
||||
}
|
||||
|
||||
public enum Prime {
|
||||
case N1024
|
||||
case N1536
|
||||
case N2048
|
||||
case N3072
|
||||
case N4096
|
||||
case N6144
|
||||
case N8192
|
||||
|
||||
/// prime numbers and generators taken from RC 5054 https://tools.ietf.org/html/rfc5054
|
||||
var group: BigNum {
|
||||
switch self {
|
||||
case .N1024:
|
||||
return BigNum(hex:
|
||||
"EEAF0AB9ADB38DD69C33F80AFA8FC5E86072618775FF3C0B9EA2314C" +
|
||||
"9C256576D674DF7496EA81D3383B4813D692C6E0E0D5D8E250B98BE4" +
|
||||
"8E495C1D6089DAD15DC7D7B46154D6B6CE8EF4AD69B15D4982559B29" +
|
||||
"7BCF1885C529F566660E57EC68EDBC3C05726CC02FD4CBF4976EAA9A" +
|
||||
"FD5138FE8376435B9FC61D2FC0EB06E3")!
|
||||
|
||||
case .N1536:
|
||||
return BigNum(hex:
|
||||
"9DEF3CAFB939277AB1F12A8617A47BBBDBA51DF499AC4C80BEEEA961" +
|
||||
"4B19CC4D5F4F5F556E27CBDE51C6A94BE4607A291558903BA0D0F843" +
|
||||
"80B655BB9A22E8DCDF028A7CEC67F0D08134B1C8B97989149B609E0B" +
|
||||
"E3BAB63D47548381DBC5B1FC764E3F4B53DD9DA1158BFD3E2B9C8CF5" +
|
||||
"6EDF019539349627DB2FD53D24B7C48665772E437D6C7F8CE442734A" +
|
||||
"F7CCB7AE837C264AE3A9BEB87F8A2FE9B8B5292E5A021FFF5E91479E" +
|
||||
"8CE7A28C2442C6F315180F93499A234DCF76E3FED135F9BB")!
|
||||
|
||||
case .N2048:
|
||||
return BigNum(hex:
|
||||
"AC6BDB41324A9A9BF166DE5E1389582FAF72B6651987EE07FC319294" +
|
||||
"3DB56050A37329CBB4A099ED8193E0757767A13DD52312AB4B03310D" +
|
||||
"CD7F48A9DA04FD50E8083969EDB767B0CF6095179A163AB3661A05FB" +
|
||||
"D5FAAAE82918A9962F0B93B855F97993EC975EEAA80D740ADBF4FF74" +
|
||||
"7359D041D5C33EA71D281E446B14773BCA97B43A23FB801676BD207A" +
|
||||
"436C6481F1D2B9078717461A5B9D32E688F87748544523B524B0D57D" +
|
||||
"5EA77A2775D2ECFA032CFBDBF52FB3786160279004E57AE6AF874E73" +
|
||||
"03CE53299CCC041C7BC308D82A5698F3A8D0C38271AE35F8E9DBFBB6" +
|
||||
"94B5C803D89F7AE435DE236D525F54759B65E372FCD68EF20FA7111F" +
|
||||
"9E4AFF73")!
|
||||
|
||||
case .N3072:
|
||||
return BigNum(hex:
|
||||
"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" +
|
||||
"8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B" +
|
||||
"302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9" +
|
||||
"A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6" +
|
||||
"49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8" +
|
||||
"FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
|
||||
"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C" +
|
||||
"180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718" +
|
||||
"3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D" +
|
||||
"04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D" +
|
||||
"B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226" +
|
||||
"1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
|
||||
"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC" +
|
||||
"E0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF")!
|
||||
|
||||
case .N4096:
|
||||
return BigNum(hex:
|
||||
"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" +
|
||||
"8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B" +
|
||||
"302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9" +
|
||||
"A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6" +
|
||||
"49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8" +
|
||||
"FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
|
||||
"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C" +
|
||||
"180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718" +
|
||||
"3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D" +
|
||||
"04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D" +
|
||||
"B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226" +
|
||||
"1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
|
||||
"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC" +
|
||||
"E0FD108E4B82D120A92108011A723C12A787E6D788719A10BDBA5B26" +
|
||||
"99C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8DBBBC2DB" +
|
||||
"04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2" +
|
||||
"233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127" +
|
||||
"D5B05AA993B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199" +
|
||||
"FFFFFFFFFFFFFFFF")!
|
||||
|
||||
case .N6144:
|
||||
return BigNum(hex:
|
||||
"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" +
|
||||
"8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B" +
|
||||
"302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9" +
|
||||
"A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6" +
|
||||
"49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8" +
|
||||
"FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
|
||||
"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C" +
|
||||
"180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718" +
|
||||
"3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D" +
|
||||
"04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D" +
|
||||
"B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226" +
|
||||
"1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
|
||||
"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC" +
|
||||
"E0FD108E4B82D120A92108011A723C12A787E6D788719A10BDBA5B26" +
|
||||
"99C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8DBBBC2DB" +
|
||||
"04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2" +
|
||||
"233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127" +
|
||||
"D5B05AA993B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492" +
|
||||
"36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BDF8FF9406" +
|
||||
"AD9E530EE5DB382F413001AEB06A53ED9027D831179727B0865A8918" +
|
||||
"DA3EDBEBCF9B14ED44CE6CBACED4BB1BDB7F1447E6CC254B33205151" +
|
||||
"2BD7AF426FB8F401378CD2BF5983CA01C64B92ECF032EA15D1721D03" +
|
||||
"F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E59E7C97F" +
|
||||
"BEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA" +
|
||||
"CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58B" +
|
||||
"B7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632" +
|
||||
"387FE8D76E3C0468043E8F663F4860EE12BF2D5B0B7474D6E694F91E" +
|
||||
"6DCC4024FFFFFFFFFFFFFFFF")!
|
||||
|
||||
case .N8192:
|
||||
return BigNum(hex:
|
||||
"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" +
|
||||
"8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B" +
|
||||
"302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9" +
|
||||
"A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6" +
|
||||
"49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8" +
|
||||
"FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
|
||||
"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C" +
|
||||
"180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718" +
|
||||
"3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D" +
|
||||
"04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D" +
|
||||
"B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226" +
|
||||
"1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C" +
|
||||
"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC" +
|
||||
"E0FD108E4B82D120A92108011A723C12A787E6D788719A10BDBA5B26" +
|
||||
"99C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8DBBBC2DB" +
|
||||
"04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2" +
|
||||
"233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127" +
|
||||
"D5B05AA993B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492" +
|
||||
"36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BDF8FF9406" +
|
||||
"AD9E530EE5DB382F413001AEB06A53ED9027D831179727B0865A8918" +
|
||||
"DA3EDBEBCF9B14ED44CE6CBACED4BB1BDB7F1447E6CC254B33205151" +
|
||||
"2BD7AF426FB8F401378CD2BF5983CA01C64B92ECF032EA15D1721D03" +
|
||||
"F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E59E7C97F" +
|
||||
"BEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA" +
|
||||
"CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58B" +
|
||||
"B7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632" +
|
||||
"387FE8D76E3C0468043E8F663F4860EE12BF2D5B0B7474D6E694F91E" +
|
||||
"6DBE115974A3926F12FEE5E438777CB6A932DF8CD8BEC4D073B931BA" +
|
||||
"3BC832B68D9DD300741FA7BF8AFC47ED2576F6936BA424663AAB639C" +
|
||||
"5AE4F5683423B4742BF1C978238F16CBE39D652DE3FDB8BEFC848AD9" +
|
||||
"22222E04A4037C0713EB57A81A23F0C73473FC646CEA306B4BCBC886" +
|
||||
"2F8385DDFA9D4B7FA2C087E879683303ED5BDD3A062B3CF5B3A278A6" +
|
||||
"6D2A13F83F44F82DDF310EE074AB6A364597E899A0255DC164F31CC5" +
|
||||
"0846851DF9AB48195DED7EA1B1D510BD7EE74D73FAF36BC31ECFA268" +
|
||||
"359046F4EB879F924009438B481C6CD7889A002ED5EE382BC9190DA6" +
|
||||
"FC026E479558E4475677E9AA9E3050E2765694DFC81F56E880B96E71" +
|
||||
"60C980DD98EDD3DFFFFFFFFFFFFFFFFF")!
|
||||
}
|
||||
}
|
||||
|
||||
var generator: BigNum {
|
||||
switch self {
|
||||
case .N1024, .N1536, .N2048:
|
||||
return BigNum(2)
|
||||
case .N3072, .N4096, .N6144:
|
||||
return BigNum(5)
|
||||
case .N8192:
|
||||
return BigNum(19)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
21
xcodes-srp/Sources/SRP/error.swift
Normal file
21
xcodes-srp/Sources/SRP/error.swift
Normal file
|
|
@ -0,0 +1,21 @@
|
|||
/// Errors thrown by SRPClient
|
||||
public enum SRPClientError: Swift.Error {
|
||||
/// the key returned by server is invalid, in that either it modulo N is zero or the hash(A,B) is zero
|
||||
case nullServerKey
|
||||
/// server verification code was wrong
|
||||
case invalidServerCode
|
||||
/// you called verifyServerCode without a verification key
|
||||
case requiresVerificationKey
|
||||
/// client key is invalid
|
||||
case invalidClientKey
|
||||
}
|
||||
|
||||
/// Errors thrown by SRPServer
|
||||
///Errors thrown by SRPServer
|
||||
public enum SRPServerError: Swift.Error {
|
||||
/// the modulus of the client key and N generated a zero
|
||||
case nullClientKey
|
||||
/// client proof of the shared secret was invalid or wrong
|
||||
case invalidClientProof
|
||||
}
|
||||
|
||||
40
xcodes-srp/Sources/SRP/keys.swift
Normal file
40
xcodes-srp/Sources/SRP/keys.swift
Normal file
|
|
@ -0,0 +1,40 @@
|
|||
import BigNum
|
||||
|
||||
/// Wrapper for keys used by SRP
|
||||
public struct SRPKey {
|
||||
public let number: BigNum
|
||||
public var bytes: [UInt8] { number.bytes }
|
||||
public var hex: String { number.hex }
|
||||
|
||||
public init(_ bytes: [UInt8]) {
|
||||
self.number = BigNum(bytes: bytes)
|
||||
}
|
||||
|
||||
public init(_ number: BigNum) {
|
||||
self.number = number
|
||||
}
|
||||
|
||||
public init?(hex: String) {
|
||||
guard let number = BigNum(hex: hex) else { return nil }
|
||||
self.number = number
|
||||
}
|
||||
}
|
||||
|
||||
extension SRPKey: Equatable { }
|
||||
|
||||
/// Contains a private and a public key
|
||||
public struct SRPKeyPair {
|
||||
public let `public`: SRPKey
|
||||
public let `private`: SRPKey
|
||||
|
||||
|
||||
/// Initialise a SRPKeyPair object
|
||||
/// - Parameters:
|
||||
/// - public: The public key of the key pair
|
||||
/// - private: The private key of the key pair
|
||||
public init(`public`: SRPKey, `private`: SRPKey) {
|
||||
self.private = `private`
|
||||
self.public = `public`
|
||||
}
|
||||
}
|
||||
|
||||
108
xcodes-srp/Sources/SRP/server.swift
Normal file
108
xcodes-srp/Sources/SRP/server.swift
Normal file
|
|
@ -0,0 +1,108 @@
|
|||
import BigNum
|
||||
import Crypto
|
||||
|
||||
/// Manages the server side of Secure Remote Password.
|
||||
///
|
||||
/// Secure Remote Password (SRP) provides username and password authentication without needing to provide your password to the server. The server
|
||||
/// has a cryptographic verifier that is derived from the password and a salt that was used to generate this verifier. Both client and server
|
||||
/// generate a shared secret then the client sends a proof they have the secret and if it is correct the server will do the same to verify the
|
||||
/// server as well.
|
||||
///
|
||||
/// This version is compliant with SRP version 6a and RFC 5054.
|
||||
///
|
||||
/// Reference reading
|
||||
/// - https://tools.ietf.org/html/rfc2945
|
||||
/// - https://tools.ietf.org/html/rfc5054
|
||||
///
|
||||
public struct SRPServer<H: HashFunction> {
|
||||
/// Authentication state. Stores A,B and shared secret
|
||||
public struct AuthenticationState {
|
||||
let clientPublicKey: SRPKey
|
||||
let serverPublicKey: SRPKey
|
||||
var serverPrivateKey: SRPKey
|
||||
}
|
||||
|
||||
/// configuration has to be the same as the client configuration
|
||||
public let configuration: SRPConfiguration<H>
|
||||
|
||||
/// Initialise SRPServer
|
||||
/// - Parameter configuration: configuration to use
|
||||
public init(configuration: SRPConfiguration<H>) {
|
||||
self.configuration = configuration
|
||||
}
|
||||
|
||||
/// generate public and private keys to be used in srp authentication
|
||||
/// - Parameter verifier: password verifier used to generate key pair
|
||||
/// - Returns: return public/private key pair
|
||||
public func generateKeys(verifier: SRPKey) -> SRPKeyPair {
|
||||
var b: BigNum
|
||||
var B: BigNum
|
||||
repeat {
|
||||
b = BigNum(bytes: SymmetricKey(size: .bits256))
|
||||
B = (configuration.k * verifier.number + configuration.g.power(b, modulus: configuration.N)) % configuration.N
|
||||
} while B % configuration.N == BigNum(0)
|
||||
|
||||
return SRPKeyPair(public: SRPKey(B), private: SRPKey(b))
|
||||
}
|
||||
|
||||
/// calculate the shared secret
|
||||
/// - Parameters:
|
||||
/// - clientPublicKey: public key received from client
|
||||
/// - serverKeys: server key pair
|
||||
/// - verifier: password verifier
|
||||
/// - Returns: shared secret
|
||||
public func calculateSharedSecret(clientPublicKey: SRPKey, serverKeys: SRPKeyPair, verifier: SRPKey) throws -> SRPKey {
|
||||
guard clientPublicKey.number % configuration.N != BigNum(0) else { throw SRPServerError.nullClientKey }
|
||||
|
||||
// calculate u = H(clientPublicKey | serverPublicKey)
|
||||
let u = SRP<H>.calculateU(clientPublicKey: clientPublicKey.bytes, serverPublicKey: serverKeys.public.bytes, pad: configuration.sizeN)
|
||||
|
||||
// calculate S
|
||||
let S = ((clientPublicKey.number * verifier.number.power(u, modulus: configuration.N)).power(serverKeys.private.number, modulus: configuration.N))
|
||||
|
||||
return SRPKey(S)
|
||||
}
|
||||
|
||||
/// verify proof that client has shared secret and return a server verification proof. If verification fails a `invalidClientCode` error is thrown
|
||||
///
|
||||
/// - Parameters:
|
||||
/// - code: verification code sent by user
|
||||
/// - username: username
|
||||
/// - salt: salt stored with user
|
||||
/// - state: authentication state.
|
||||
/// - Throws: invalidClientCode
|
||||
/// - Returns: The server verification code
|
||||
public func verifySimpleClientProof(proof: [UInt8], clientPublicKey: SRPKey, serverPublicKey: SRPKey, sharedSecret: SRPKey) throws -> [UInt8] {
|
||||
let clientProof = SRP<H>.calculateSimpleClientProof(
|
||||
clientPublicKey: clientPublicKey,
|
||||
serverPublicKey: serverPublicKey,
|
||||
sharedSecret: sharedSecret
|
||||
)
|
||||
guard clientProof == proof else { throw SRPServerError.invalidClientProof }
|
||||
return SRP<H>.calculateSimpleServerVerification(clientPublicKey: clientPublicKey, clientProof: clientProof, sharedSecret: sharedSecret)
|
||||
}
|
||||
|
||||
/// verify proof that client has shared secret and return a server verification proof. If verification fails a `invalidClientCode` error is thrown
|
||||
///
|
||||
/// - Parameters:
|
||||
/// - code: verification code sent by user
|
||||
/// - username: username
|
||||
/// - salt: salt stored with user
|
||||
/// - state: authentication state.
|
||||
/// - Throws: invalidClientCode
|
||||
/// - Returns: The server verification code
|
||||
public func verifyClientProof(proof: [UInt8], username: String, salt: [UInt8], clientPublicKey: SRPKey, serverPublicKey: SRPKey, sharedSecret: SRPKey) throws -> [UInt8] {
|
||||
let hashSharedSecret = [UInt8](H.hash(data: sharedSecret.bytes))
|
||||
|
||||
let clientProof = SRP<H>.calculateClientProof(
|
||||
configuration: configuration,
|
||||
username: username,
|
||||
salt: salt,
|
||||
clientPublicKey: clientPublicKey,
|
||||
serverPublicKey: serverPublicKey,
|
||||
hashSharedSecret: hashSharedSecret
|
||||
)
|
||||
guard clientProof == proof else { throw SRPServerError.invalidClientProof }
|
||||
return SRP<H>.calculateServerVerification(clientPublicKey: clientPublicKey, clientProof: clientProof, sharedSecret: hashSharedSecret)
|
||||
}
|
||||
}
|
||||
64
xcodes-srp/Sources/SRP/srp.swift
Normal file
64
xcodes-srp/Sources/SRP/srp.swift
Normal file
|
|
@ -0,0 +1,64 @@
|
|||
import BigNum
|
||||
import Crypto
|
||||
|
||||
/// Contains common code used by both client and server SRP code
|
||||
public struct SRP<H: HashFunction> {
|
||||
|
||||
/// pad to a certain size by prefixing with zeros
|
||||
static func pad(_ data: [UInt8], to size: Int) -> [UInt8] {
|
||||
let padSize = size - data.count
|
||||
guard padSize > 0 else { return data }
|
||||
// create prefix and return prefix + data
|
||||
let prefix: [UInt8] = (1...padSize).reduce([]) { result,_ in return result + [0] }
|
||||
return prefix + data
|
||||
}
|
||||
|
||||
/// calculate u = H(clientPublicKey | serverPublicKey)
|
||||
public static func calculateU(clientPublicKey: [UInt8], serverPublicKey: [UInt8], pad: Int) -> BigNum {
|
||||
BigNum(bytes: [UInt8].init(H.hash(data: SRP<H>.pad(clientPublicKey, to: pad) + SRP<H>.pad(serverPublicKey, to: pad))))
|
||||
}
|
||||
|
||||
/// Calculate a simpler client verification code H(A | B | S)
|
||||
static func calculateSimpleClientProof(
|
||||
clientPublicKey: SRPKey,
|
||||
serverPublicKey: SRPKey,
|
||||
sharedSecret: SRPKey) -> [UInt8]
|
||||
{
|
||||
let HABK = H.hash(data: clientPublicKey.bytes + serverPublicKey.bytes + sharedSecret.bytes)
|
||||
return [UInt8](HABK)
|
||||
}
|
||||
|
||||
/// Calculate a simpler client verification code H(A | M1 | S)
|
||||
static func calculateSimpleServerVerification(
|
||||
clientPublicKey: SRPKey,
|
||||
clientProof: [UInt8],
|
||||
sharedSecret: SRPKey) -> [UInt8]
|
||||
{
|
||||
let HABK = H.hash(data: clientPublicKey.bytes + clientProof + sharedSecret.bytes)
|
||||
return [UInt8](HABK)
|
||||
}
|
||||
|
||||
/// Calculate client verification code H(H(N)^ H(g)) | H(username) | salt | A | B | H(S))
|
||||
static func calculateClientProof(
|
||||
configuration: SRPConfiguration<H>,
|
||||
username: String,
|
||||
salt: [UInt8],
|
||||
clientPublicKey: SRPKey,
|
||||
serverPublicKey: SRPKey,
|
||||
hashSharedSecret: [UInt8]) -> [UInt8]
|
||||
{
|
||||
// M = H(H(N)^ H(g)) | H(username) | salt | client key | server key | H(shared secret))
|
||||
let N_xor_g = [UInt8](H.hash(data: configuration.N.bytes)) ^ [UInt8](H.hash(data: configuration.g.bytes))
|
||||
let hashUser = H.hash(data: [UInt8](username.utf8))
|
||||
let M1 = [UInt8](N_xor_g) + hashUser + salt
|
||||
let M2 = clientPublicKey.bytes + serverPublicKey.bytes + hashSharedSecret
|
||||
let M = H.hash(data: M1 + M2)
|
||||
return [UInt8](M)
|
||||
}
|
||||
|
||||
/// Calculate server verification code H(A | M1 | K)
|
||||
static func calculateServerVerification(clientPublicKey: SRPKey, clientProof: [UInt8], sharedSecret: [UInt8]) -> [UInt8] {
|
||||
let HAMK = H.hash(data: clientPublicKey.bytes + clientProof + sharedSecret)
|
||||
return [UInt8](HAMK)
|
||||
}
|
||||
}
|
||||
6
xcodes-srp/Tests/LinuxMain.swift
Normal file
6
xcodes-srp/Tests/LinuxMain.swift
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
import XCTest
|
||||
import SRPTests
|
||||
|
||||
var tests = [XCTestCaseEntry]()
|
||||
tests += SRPTests.allTests()
|
||||
XCTMain(tests)
|
||||
207
xcodes-srp/Tests/SRPTests/SRPTests.swift
Normal file
207
xcodes-srp/Tests/SRPTests/SRPTests.swift
Normal file
|
|
@ -0,0 +1,207 @@
|
|||
import XCTest
|
||||
import BigNum
|
||||
import Crypto
|
||||
@testable import SRP
|
||||
|
||||
final class SRPTests: XCTestCase {
|
||||
|
||||
func testSRPSharedSecret() {
|
||||
let username = "adamfowler"
|
||||
let password = "testpassword"
|
||||
let configuration = SRPConfiguration<Insecure.SHA1>(.N2048)
|
||||
let client = SRPClient<Insecure.SHA1>(configuration: configuration)
|
||||
let server = SRPServer<Insecure.SHA1>(configuration: configuration)
|
||||
|
||||
let (salt, verifier) = client.generateSaltAndVerifier(username: username, password: password)
|
||||
|
||||
let clientKeys = client.generateKeys()
|
||||
let serverKeys = server.generateKeys(verifier: verifier)
|
||||
|
||||
do {
|
||||
let sharedSecret = try client.calculateSharedSecret(
|
||||
username: username,
|
||||
password: password,
|
||||
salt: salt,
|
||||
clientKeys: clientKeys,
|
||||
serverPublicKey: serverKeys.public)
|
||||
|
||||
let serverSharedSecret = try server.calculateSharedSecret(
|
||||
clientPublicKey: clientKeys.public,
|
||||
serverKeys: serverKeys,
|
||||
verifier: verifier)
|
||||
|
||||
XCTAssertEqual(sharedSecret, serverSharedSecret)
|
||||
} catch {
|
||||
XCTFail("\(error)")
|
||||
}
|
||||
}
|
||||
|
||||
func testVerifySRP<H: HashFunction>(configuration: SRPConfiguration<H>) {
|
||||
let username = "adamfowler"
|
||||
let password = "testpassword"
|
||||
let client = SRPClient<H>(configuration: configuration)
|
||||
let server = SRPServer<H>(configuration: configuration)
|
||||
|
||||
let (salt, verifier) = client.generateSaltAndVerifier(username: username, password: password)
|
||||
|
||||
do {
|
||||
// client initiates authentication
|
||||
let clientKeys = client.generateKeys()
|
||||
// provides the server with an A value and username from which it gets the password verifier.
|
||||
// server initiates authentication
|
||||
let serverKeys = server.generateKeys(verifier: verifier)
|
||||
// server passes back B value and a salt which was attached to the user
|
||||
// client calculates verification code from username, password, current authenticator state, B and salt
|
||||
let clientSharedSecret = try client.calculateSharedSecret(username: username, password: password, salt: salt, clientKeys: clientKeys, serverPublicKey: serverKeys.public)
|
||||
let clientProof = client.calculateClientProof(username: username, salt: salt, clientPublicKey: clientKeys.public, serverPublicKey: serverKeys.public, sharedSecret: clientSharedSecret)
|
||||
// client passes proof key to server
|
||||
// server validates the key and then returns a server validation key
|
||||
let serverSharedSecret = try server.calculateSharedSecret(clientPublicKey: clientKeys.public, serverKeys: serverKeys, verifier: verifier)
|
||||
let serverProof = try server.verifyClientProof(proof: clientProof, username: username, salt: salt, clientPublicKey: clientKeys.public, serverPublicKey: serverKeys.public, sharedSecret: serverSharedSecret)
|
||||
// client verifies server validation key
|
||||
try client.verifyServerProof(serverProof: serverProof, clientProof: clientProof, clientKeys: clientKeys, sharedSecret: clientSharedSecret)
|
||||
} catch {
|
||||
XCTFail("\(error)")
|
||||
}
|
||||
}
|
||||
|
||||
func testVerifySRP() {
|
||||
testVerifySRP(configuration: SRPConfiguration<SHA256>(.N1024))
|
||||
testVerifySRP(configuration: SRPConfiguration<SHA256>(.N1536))
|
||||
testVerifySRP(configuration: SRPConfiguration<SHA256>(.N2048))
|
||||
testVerifySRP(configuration: SRPConfiguration<SHA256>(.N3072))
|
||||
testVerifySRP(configuration: SRPConfiguration<Insecure.SHA1>(.N4096))
|
||||
testVerifySRP(configuration: SRPConfiguration<Insecure.SHA1>(.N6144))
|
||||
testVerifySRP(configuration: SRPConfiguration<Insecure.SHA1>(.N8192))
|
||||
}
|
||||
|
||||
func testVerifySRPCustomConfiguration() {
|
||||
testVerifySRP(configuration: SRPConfiguration<SHA384>(N: BigNum(37), g: BigNum(3)))
|
||||
}
|
||||
|
||||
func testClientSessionProof() {
|
||||
let configuration = SRPConfiguration<Insecure.SHA1>(.N1024)
|
||||
let username = "alice"
|
||||
let salt = "bafa3be2813c9326".bytes(using: .hexadecimal)!
|
||||
let A = BigNum(hex: "b525e8fe2eac8f5da6b3220e66a0ab6f833a59d5f079fe9ddcdf111a22eaec95850374d9d7597f45497eb429bcde5057a450948de7d48edc034264916a01e6c0690e14b0a527f107d3207fd2214653c9162f5745e7cbeb19a550a072d4600ce8f4ef778f6d6899ba718adf0a462e7d981ed689de93ea1bda773333f23ebb4a9b")!
|
||||
let B = BigNum(hex: "2bfc8559a022497f1254af3c76786b95cb0dfb449af15501aa51eefe78947d7ef06df4fcc07a899bcaae0e552ca72c7a1f3016f3ec357a86a1428dad9f98cb8a69d405404e57e9aaf01e51a46a73b3fc7bc1d212569e4a882ae6d878599e098c89033838ec069fe368a49461f531e5b4662700d56d8c252d0aea9da6abe9b014")!
|
||||
let secret = "b6288955afd690a13686d65886b5f82018515df3".bytes(using: .hexadecimal)!
|
||||
let clientProof = SRP<Insecure.SHA1>.calculateClientProof(configuration: configuration, username: username, salt: salt, clientPublicKey: SRPKey(A), serverPublicKey: SRPKey(B), hashSharedSecret: secret)
|
||||
|
||||
XCTAssertEqual(clientProof.hexdigest(), "e4c5c2e145ea2de18d0cc1ac9dc2a0d0988706d6")
|
||||
}
|
||||
|
||||
func testServerSessionProof() {
|
||||
let A = BigNum(hex: "eade4992a46182e9ffe2e69f3e2639ca5f8c29b2868083c45d0972b72bb6003911b64a7ea6738061d705d368ddbe2bdb251bec63184db09b8990d8a7415dc449fbab720626fc25d6bd33c32234973c1e41c25b18d1824590c807c491221be5493878bd27a5ca507fd3963c849b07a9ec413e13253c6c61e7f3219b247cfa574a")!
|
||||
let secret = "d89740e18a9fb597aef8f2ecc0e66f4b31c2ae08".bytes(using: .hexadecimal)!
|
||||
let clientProof = "e1a8629a723039a61be91a173ab6260fc582192f".bytes(using: .hexadecimal)!
|
||||
|
||||
let serverProof = SRP<Insecure.SHA1>.calculateServerVerification(clientPublicKey: SRPKey(A), clientProof: clientProof, sharedSecret: secret)
|
||||
|
||||
XCTAssertEqual(serverProof.hexdigest(), "8342bd06bdf4d263de2df9a56da8e581fb38c769")
|
||||
}
|
||||
|
||||
// Test results against RFC5054 Appendix B
|
||||
func testRFC5054Appendix() throws {
|
||||
let username = "alice"
|
||||
let password = "password123"
|
||||
let salt = "BEB25379D1A8581EB5A727673A2441EE".bytes(using: .hexadecimal)!
|
||||
let configuration = SRPConfiguration<Insecure.SHA1>(.N1024)
|
||||
let client = SRPClient<Insecure.SHA1>(configuration: configuration)
|
||||
|
||||
XCTAssertEqual(configuration.k.hex, "7556AA045AEF2CDD07ABAF0F665C3E818913186F".lowercased())
|
||||
|
||||
let verifier = client.generatePasswordVerifier(username: username, password: password, salt: salt)
|
||||
|
||||
XCTAssertEqual(verifier.hex, "7E273DE8696FFC4F4E337D05B4B375BEB0DDE1569E8FA00A9886D8129BADA1F1822223CA1A605B530E379BA4729FDC59F105B4787E5186F5C671085A1447B52A48CF1970B4FB6F8400BBF4CEBFBB168152E08AB5EA53D15C1AFF87B2B9DA6E04E058AD51CC72BFC9033B564E26480D78E955A5E29E7AB245DB2BE315E2099AFB".lowercased())
|
||||
|
||||
let a = BigNum(hex: "60975527035CF2AD1989806F0407210BC81EDC04E2762A56AFD529DDDA2D4393")!
|
||||
// copied from client.swift
|
||||
let A = configuration.g.power(a, modulus: configuration.N)
|
||||
|
||||
XCTAssertEqual(A.hex, "61D5E490F6F1B79547B0704C436F523DD0E560F0C64115BB72557EC44352E8903211C04692272D8B2D1A5358A2CF1B6E0BFCF99F921530EC8E39356179EAE45E42BA92AEACED825171E1E8B9AF6D9C03E1327F44BE087EF06530E69F66615261EEF54073CA11CF5858F0EDFDFE15EFEAB349EF5D76988A3672FAC47B0769447B".lowercased())
|
||||
|
||||
let b = BigNum(hex: "E487CB59D31AC550471E81F00F6928E01DDA08E974A004F49E61F5D105284D20")!
|
||||
// copied from server.swift
|
||||
let B = (configuration.k * verifier + configuration.g.power(b, modulus: configuration.N)) % configuration.N
|
||||
|
||||
XCTAssertEqual(B.hex, "BD0C61512C692C0CB6D041FA01BB152D4916A1E77AF46AE105393011BAF38964DC46A0670DD125B95A981652236F99D9B681CBF87837EC996C6DA04453728610D0C6DDB58B318885D7D82C7F8DEB75CE7BD4FBAA37089E6F9C6059F388838E7A00030B331EB76840910440B1B27AAEAEEB4012B7D7665238A8E3FB004B117B58".lowercased())
|
||||
|
||||
let u = SRP<Insecure.SHA1>.calculateU(clientPublicKey: A.bytes, serverPublicKey: B.bytes, pad: configuration.sizeN)
|
||||
|
||||
XCTAssertEqual(u.hex, "CE38B9593487DA98554ED47D70A7AE5F462EF019".lowercased())
|
||||
|
||||
let sharedSecret = try client.calculateSharedSecret(username: username, password: password, salt: salt, clientKeys: SRPKeyPair(public: SRPKey(A), private: SRPKey(a)), serverPublicKey: SRPKey(B))
|
||||
|
||||
XCTAssertEqual(sharedSecret.number.hex, "B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212DC346D7E474B29EDE8A469FFECA686E5A".lowercased())
|
||||
}
|
||||
|
||||
/// Test library against Mozilla test vectors https://wiki.mozilla.org/Identity/AttachedServices/KeyServerProtocol#SRP_Verifier
|
||||
func testMozillaTestVectors() throws {
|
||||
let username = "andré@example.org"
|
||||
let password = "00f9b71800ab5337d51177d8fbc682a3653fa6dae5b87628eeec43a18af59a9d".bytes(using: .hexadecimal)!
|
||||
let salt = "00f1000000000000000000000000000000000000000000000000000000000179".bytes(using: .hexadecimal)!
|
||||
let configuration = SRPConfiguration<SHA256>(.N2048)
|
||||
let client = SRPClient(configuration: configuration)
|
||||
|
||||
XCTAssertEqual(configuration.k.dec, "2590038599070950300691544216303772122846747035652616593381637186118123578112")
|
||||
|
||||
let message = [UInt8]("\(username):".utf8) + password
|
||||
let verifier = client.generatePasswordVerifier(message: message, salt: salt)
|
||||
|
||||
XCTAssertEqual(verifier.hex, "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")
|
||||
|
||||
let b = BigNum(hex: "00f3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f")!
|
||||
// copied from server.swift
|
||||
let B = (configuration.k * verifier + configuration.g.power(b, modulus: configuration.N)) % configuration.N
|
||||
|
||||
XCTAssertEqual(B.hex, "22ce5a7b9d81277172caa20b0f1efb4643b3becc53566473959b07b790d3c3f08650d5531c19ad30ebb67bdb481d1d9cf61bf272f8439848fdda58a4e6abc5abb2ac496da5098d5cbf90e29b4b110e4e2c033c70af73925fa37457ee13ea3e8fde4ab516dff1c2ae8e57a6b264fb9db637eeeae9b5e43dfaba9b329d3b8770ce89888709e026270e474eef822436e6397562f284778673a1a7bc12b6883d1c21fbc27ffb3dbeb85efda279a69a19414969113f10451603065f0a012666645651dde44a52f4d8de113e2131321df1bf4369d2585364f9e536c39a4dce33221be57d50ddccb4384e3612bbfd03a268a36e4f7e01de651401e108cc247db50392")
|
||||
|
||||
let a = BigNum(hex: "00f2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d3d7")!
|
||||
// copied from client.swift
|
||||
let A = configuration.g.power(a, modulus: configuration.N)
|
||||
|
||||
XCTAssertEqual(A.hex, "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")
|
||||
|
||||
let u = SRP<SHA256>.calculateU(clientPublicKey: A.bytes, serverPublicKey: B.bytes, pad: configuration.sizeN)
|
||||
|
||||
XCTAssertEqual(u.hex, "b284aa1064e8775150da6b5e2147b47ca7df505bed94a6f4bb2ad873332ad732")
|
||||
|
||||
let sharedSecret = try client.calculateSharedSecret(message: message, salt: salt, clientKeys: SRPKeyPair(public: SRPKey(A), private: SRPKey(a)), serverPublicKey: SRPKey(B))
|
||||
|
||||
XCTAssertEqual(sharedSecret.hex, "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")
|
||||
}
|
||||
|
||||
static var allTests = [
|
||||
("testSRPSharedSecret", testSRPSharedSecret),
|
||||
("testVerifySRP", testVerifySRP),
|
||||
("testVerifySRPCustomConfiguration", testVerifySRPCustomConfiguration),
|
||||
("testClientSessionProof", testClientSessionProof),
|
||||
("testServerSessionProof", testServerSessionProof),
|
||||
("testRFC5054Appendix", testRFC5054Appendix),
|
||||
("testMozillaTestVectors", testMozillaTestVectors),
|
||||
]
|
||||
}
|
||||
|
||||
extension String {
|
||||
enum ExtendedEncoding {
|
||||
case hexadecimal
|
||||
}
|
||||
|
||||
func bytes(using encoding:ExtendedEncoding) -> [UInt8]? {
|
||||
guard self.count % 2 == 0 else { return nil }
|
||||
|
||||
var bytes: [UInt8] = []
|
||||
|
||||
var indexIsEven = true
|
||||
for i in self.indices {
|
||||
if indexIsEven {
|
||||
let byteRange = i...self.index(after: i)
|
||||
guard let byte = UInt8(self[byteRange], radix: 16) else { return nil }
|
||||
bytes.append(byte)
|
||||
}
|
||||
indexIsEven.toggle()
|
||||
}
|
||||
return bytes
|
||||
}
|
||||
}
|
||||
9
xcodes-srp/Tests/SRPTests/XCTestManifests.swift
Normal file
9
xcodes-srp/Tests/SRPTests/XCTestManifests.swift
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
import XCTest
|
||||
|
||||
#if !canImport(ObjectiveC)
|
||||
public func allTests() -> [XCTestCaseEntry] {
|
||||
return [
|
||||
testCase(SRPTests.allTests),
|
||||
]
|
||||
}
|
||||
#endif
|
||||
Loading…
Reference in a new issue