允许使用GCM Mode

close: #262

Bark/Localizable.xcstrings

@@ -1403,6 +1403,29 @@
         }
       }
     },
+    "gcmNotSupported" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "GCM mode does not support copying script example."
+          }
+        },
+        "tr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "GCM modu, script örneklerini kopyalamayı desteklemez."
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "GCM Mode 不支持复制脚本示例。"
+          }
+        }
+      }
+    },
     "group" : {
       "extractionState" : "manual",
       "localizations" : {

Controller/CryptoSettingController.swift

@@ -26,7 +26,6 @@ class CryptoSettingController: BaseViewController<CryptoSettingViewModel> {
         let textField = BorderTextField(title: "IV")
         textField.font = UIFont.preferredFont(ofSize: 14)
         textField.adjustsFontForContentSizeCategory = true
-        textField.placeholder = String(format: NSLocalizedString("enterIv"), 16) // todo: update iv length
         return textField
     }()
 
@@ -50,7 +49,7 @@ class CryptoSettingController: BaseViewController<CryptoSettingViewModel> {
         btn.applyGradient(
             withColours: [
                 UIColor(r255: 36, g255: 51, b255: 236),
-                UIColor(r255: 70, g255: 44, b255: 233),
+                UIColor(r255: 70, g255: 44, b255: 233)
             ],
             gradientOrientation: .horizontal
         )
@@ -174,7 +173,6 @@ class CryptoSettingController: BaseViewController<CryptoSettingViewModel> {
     }
 
     override func bindViewModel() {
-
         func getFieldValues() -> CryptoSettingFields {
             return CryptoSettingFields(
                 algorithm: self.algorithmFeild.currentValue!,
@@ -216,6 +214,7 @@ class CryptoSettingController: BaseViewController<CryptoSettingViewModel> {
                 self?.keyTextField.text = fields.key
                 self?.ivTextField.text = fields.iv
             }
+            self?.setIvLengthPlaceholder(mode: self?.modeFeild.currentValue)
         }).disposed(by: rx.disposeBag)
 
         output.modeListChanged
@@ -229,6 +228,13 @@ class CryptoSettingController: BaseViewController<CryptoSettingViewModel> {
         output.keyLengthChanged.drive(onNext: { [weak self] keyLength in
             self?.keyTextField.placeholder = String(format: NSLocalizedString("enterKey"), keyLength)
         }).disposed(by: rx.disposeBag)
+        
+        self.modeFeild
+            .rx
+            .currentValueChanged
+            .subscribe(onNext: { [weak self] val in
+                self?.setIvLengthPlaceholder(mode: val)
+            }).disposed(by: rx.disposeBag)
 
         output.showSnackbar.drive(onNext: { text in
             HUDError(text)
@@ -243,4 +249,15 @@ class CryptoSettingController: BaseViewController<CryptoSettingViewModel> {
             HUDSuccess(NSLocalizedString("Copy"))
         }).disposed(by: rx.disposeBag)
     }
+    
+    private func setIvLengthPlaceholder(mode: String?) {
+        guard let mode else {
+            return
+        }
+        if let length = ["CBC": 16, "GCM": 12][mode] {
+            self.ivTextField.placeholder = String(format: NSLocalizedString("enterIv"), length)
+        } else {
+            self.ivTextField.placeholder = ""
+        }
+    }
 }

Controller/CryptoSettingViewModel.swift

@@ -48,7 +48,6 @@ class CryptoSettingViewModel: ViewModel, ViewModelType {
     }
 
     func transform(input: Input) -> Output {
-
         let showSnackbar = PublishRelay<String>()
 
         let modeList = input
@@ -63,7 +62,7 @@ class CryptoSettingViewModel: ViewModel, ViewModelType {
                     .compactMap { Algorithm(rawValue: $0.algorithm)?.keyLength },
                 input
                     .algorithmChanged
-                    .compactMap { Algorithm(rawValue: $0)?.keyLength },
+                    .compactMap { Algorithm(rawValue: $0)?.keyLength }
             ])
 
         // 保存配置
@@ -72,8 +71,7 @@ class CryptoSettingViewModel: ViewModel, ViewModelType {
                 do {
                     _ = try AESCryptoModel(cryptoFields: fields)
                     return true
-                }
-                catch {
+                } catch {
                     showSnackbar.accept(error.rawString())
                     return false
                 }
@@ -90,14 +88,17 @@ class CryptoSettingViewModel: ViewModel, ViewModelType {
                     // 保存配置
                     self?.dependencies.settingFieldRelay.accept(fields)
                     return true
-                }
-                catch {
+                } catch {
                     showSnackbar.accept(error.rawString())
                     return false
                 }
             }
         let copy = Driver.combineLatest(copyScript, dependencies.deviceKey, dependencies.serverAddress)
-            .map { fields, deviceKey,serverAddress in
+            .compactMap { fields, deviceKey, serverAddress -> String? in
+                guard fields.mode != "GCM" else {
+                    showSnackbar.accept(NSLocalizedString("gcmNotSupported"))
+                    return nil
+                }
                 let key = fields.key ?? ""
                 let iv = fields.iv ?? ""
                 return
@@ -129,14 +130,14 @@ class CryptoSettingViewModel: ViewModel, ViewModelType {
                     echo $ciphertext
                     
                     # \(NSLocalizedString("ciphertextComment"))
-                    curl --data-urlencode "ciphertext=$ciphertext"\( iv.count == 0 ? "" : " --data-urlencode \"iv=\(iv)\"") \(serverAddress)/$deviceKey
+                    curl --data-urlencode "ciphertext=$ciphertext"\(iv.count == 0 ? "" : " --data-urlencode \"iv=\(iv)\"") \(serverAddress)/$deviceKey
                     """
             }
 
         return Output(
             initial: Driver.just((
                 algorithmList: [Algorithm.aes128, Algorithm.aes192, Algorithm.aes256],
-                modeList: ["CBC", "ECB", /* "GCM" */],  // GCM 还没准备好示例代码，暂时禁用
+                modeList: ["CBC", "ECB", "GCM"],
                 paddingList: ["pkcs7"],
                 initialFields: dependencies.settingFieldRelay.value
             )),