From 916c899c9636cdcc3b7925c94c8b0554d75f4112 Mon Sep 17 00:00:00 2001
From: Anh Nguyen <anhnguyen@bitmark.com>
Date: Thu, 5 Dec 2024 15:06:17 +0700
Subject: [PATCH] update function to get the recovery phrases on ios

---
 ios/Runner.xcodeproj/project.pbxproj    |  66 ++++++++++-
 ios/Runner/Info.plist                   |   4 +-
 ios/Runner/Runner.entitlements          |  12 +-
 ios/Runner/SystemChannelHandler 2.swift | 144 ------------------------
 ios/Runner/SystemChannelHandler.swift   |  94 ++++++++++++++++
 ios/Runner/model/Mnemonic.swift         | 128 +++++++++++++++++++++
 ios/Runner/model/Seed.swift             |  97 +++-------------
 ios/Runner/model/WordList.swift         |   5 +
 8 files changed, 315 insertions(+), 235 deletions(-)
 delete mode 100644 ios/Runner/SystemChannelHandler 2.swift
 create mode 100644 ios/Runner/model/Mnemonic.swift
 create mode 100644 ios/Runner/model/WordList.swift

diff --git a/ios/Runner.xcodeproj/project.pbxproj b/ios/Runner.xcodeproj/project.pbxproj
index 673c65a8d..71b5e9b81 100644
--- a/ios/Runner.xcodeproj/project.pbxproj
+++ b/ios/Runner.xcodeproj/project.pbxproj
@@ -8,15 +8,22 @@
 
 /* Begin PBXBuildFile section */
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
-		311A34F7898F4222918AC04D /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = FC4511D74C969E513EB211D8 /* Pods_Runner.framework */; };
 		312F145516427F1A4582CB54 /* Pods_RunnerTests.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 0A797A66DE40EFF1F7CF4147 /* Pods_RunnerTests.framework */; };
 		331C808B294A63AB00263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C807B294A618700263BE5 /* RunnerTests.swift */; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
 		58B2C4F12CFDBC0900FD14C5 /* libsqlite3.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 58B2C4F02CFDBBF300FD14C5 /* libsqlite3.tbd */; };
+		58B371652D014747005A2188 /* SystemChannelHandler.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58B371642D014747005A2188 /* SystemChannelHandler.swift */; };
+		58B371662D014747005A2188 /* Keychain.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58B371612D014747005A2188 /* Keychain.swift */; };
+		58B371672D014747005A2188 /* Constant.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58B371602D014747005A2188 /* Constant.swift */; };
+		58B371682D014747005A2188 /* Seed.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58B371622D014747005A2188 /* Seed.swift */; };
+		58B3716C2D0150D9005A2188 /* Mnemonic.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58B3716A2D0150D9005A2188 /* Mnemonic.swift */; };
+		58B3716D2D0150D9005A2188 /* WordList.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58B3716B2D0150D9005A2188 /* WordList.swift */; };
+		58B3716F2D0153EB005A2188 /* URKit in Frameworks */ = {isa = PBXBuildFile; productRef = 58B3716E2D0153EB005A2188 /* URKit */; };
 		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
 		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+		D7E06ED089DD033803E83AAA /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = FC4511D74C969E513EB211D8 /* Pods_Runner.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -59,6 +66,12 @@
 		3FE978493BF46AE4D925F1BB /* Pods-Runner.release-production.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release-production.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release-production.xcconfig"; sourceTree = "<group>"; };
 		589279912CFFF88E00AB2134 /* Runner.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = Runner.entitlements; sourceTree = "<group>"; };
 		58B2C4F02CFDBBF300FD14C5 /* libsqlite3.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libsqlite3.tbd; path = usr/lib/libsqlite3.tbd; sourceTree = SDKROOT; };
+		58B371602D014747005A2188 /* Constant.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Constant.swift; sourceTree = "<group>"; };
+		58B371612D014747005A2188 /* Keychain.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Keychain.swift; sourceTree = "<group>"; };
+		58B371622D014747005A2188 /* Seed.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Seed.swift; sourceTree = "<group>"; };
+		58B371642D014747005A2188 /* SystemChannelHandler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SystemChannelHandler.swift; sourceTree = "<group>"; };
+		58B3716A2D0150D9005A2188 /* Mnemonic.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Mnemonic.swift; sourceTree = "<group>"; };
+		58B3716B2D0150D9005A2188 /* WordList.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WordList.swift; sourceTree = "<group>"; };
 		63225193030D5CB7FE6DAD45 /* Pods-RunnerTests.profile-development.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RunnerTests.profile-development.xcconfig"; path = "Target Support Files/Pods-RunnerTests/Pods-RunnerTests.profile-development.xcconfig"; sourceTree = "<group>"; };
 		6AC1725E1120EFFC8F58222D /* Pods-RunnerTests.release-production.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RunnerTests.release-production.xcconfig"; path = "Target Support Files/Pods-RunnerTests/Pods-RunnerTests.release-production.xcconfig"; sourceTree = "<group>"; };
 		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
@@ -87,8 +100,9 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				58B3716F2D0153EB005A2188 /* URKit in Frameworks */,
 				58B2C4F12CFDBC0900FD14C5 /* libsqlite3.tbd in Frameworks */,
-				311A34F7898F4222918AC04D /* Pods_Runner.framework in Frameworks */,
+				D7E06ED089DD033803E83AAA /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -111,6 +125,16 @@
 			path = RunnerTests;
 			sourceTree = "<group>";
 		};
+		58B371632D014747005A2188 /* model */ = {
+			isa = PBXGroup;
+			children = (
+				58B3716A2D0150D9005A2188 /* Mnemonic.swift */,
+				58B3716B2D0150D9005A2188 /* WordList.swift */,
+				58B371622D014747005A2188 /* Seed.swift */,
+			);
+			path = model;
+			sourceTree = "<group>";
+		};
 		84A508EBE35873B63D6554AF /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
@@ -156,6 +180,10 @@
 		97C146F01CF9000F007C117D /* Runner */ = {
 			isa = PBXGroup;
 			children = (
+				58B371602D014747005A2188 /* Constant.swift */,
+				58B371612D014747005A2188 /* Keychain.swift */,
+				58B371632D014747005A2188 /* model */,
+				58B371642D014747005A2188 /* SystemChannelHandler.swift */,
 				589279912CFFF88E00AB2134 /* Runner.entitlements */,
 				97C146FA1CF9000F007C117D /* Main.storyboard */,
 				97C146FD1CF9000F007C117D /* Assets.xcassets */,
@@ -268,6 +296,9 @@
 				Base,
 			);
 			mainGroup = 97C146E51CF9000F007C117D;
+			packageReferences = (
+				58B371692D014CEC005A2188 /* XCRemoteSwiftPackageReference "URKit" */,
+			);
 			productRefGroup = 97C146EF1CF9000F007C117D /* Products */;
 			projectDirPath = "";
 			projectRoot = "";
@@ -358,7 +389,7 @@
 		9740EEB61CF901F6004384FC /* Run Script */ = {
 			isa = PBXShellScriptBuildPhase;
 			alwaysOutOfDate = 1;
-			buildActionMask = 2147483647;
+			buildActionMask = 8;
 			files = (
 			);
 			inputPaths = (
@@ -366,9 +397,9 @@
 			name = "Run Script";
 			outputPaths = (
 			);
-			runOnlyForDeploymentPostprocessing = 0;
+			runOnlyForDeploymentPostprocessing = 1;
 			shellPath = /bin/sh;
-			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build";
+			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build\n";
 		};
 		B6F5A593638686EE4924B19A /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;
@@ -425,7 +456,13 @@
 			buildActionMask = 2147483647;
 			files = (
 				74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */,
+				58B3716C2D0150D9005A2188 /* Mnemonic.swift in Sources */,
+				58B3716D2D0150D9005A2188 /* WordList.swift in Sources */,
 				1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */,
+				58B371652D014747005A2188 /* SystemChannelHandler.swift in Sources */,
+				58B371662D014747005A2188 /* Keychain.swift in Sources */,
+				58B371672D014747005A2188 /* Constant.swift in Sources */,
+				58B371682D014747005A2188 /* Seed.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -1414,6 +1451,25 @@
 			defaultConfigurationName = "Release-production";
 		};
 /* End XCConfigurationList section */
+
+/* Begin XCRemoteSwiftPackageReference section */
+		58B371692D014CEC005A2188 /* XCRemoteSwiftPackageReference "URKit" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/BlockchainCommons/URKit";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 15.0.0;
+			};
+		};
+/* End XCRemoteSwiftPackageReference section */
+
+/* Begin XCSwiftPackageProductDependency section */
+		58B3716E2D0153EB005A2188 /* URKit */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 58B371692D014CEC005A2188 /* XCRemoteSwiftPackageReference "URKit" */;
+			productName = URKit;
+		};
+/* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = 97C146E61CF9000F007C117D /* Project object */;
 }
diff --git a/ios/Runner/Info.plist b/ios/Runner/Info.plist
index 7ef9b2d2e..5f16968e2 100644
--- a/ios/Runner/Info.plist
+++ b/ios/Runner/Info.plist
@@ -31,6 +31,8 @@
 	<string>$(FLUTTER_BUILD_NUMBER)</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>NSCameraUsageDescription</key>
+	<string>QR code scanning requires camera access.</string>
 	<key>UIApplicationSupportsIndirectInputEvents</key>
 	<true/>
 	<key>UIBackgroundModes</key>
@@ -57,7 +59,5 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
-	<key>NSCameraUsageDescription</key>
-    <string>QR code scanning requires camera access.</string>
 </dict>
 </plist>
diff --git a/ios/Runner/Runner.entitlements b/ios/Runner/Runner.entitlements
index dec9fd5c1..d7c8601d5 100644
--- a/ios/Runner/Runner.entitlements
+++ b/ios/Runner/Runner.entitlements
@@ -4,10 +4,16 @@
 <dict>
 	<key>com.apple.developer.associated-domains</key>
 	<array>
+		<string>webcredentials:feralfile.com</string>
+		<string>webcredentials:accounts.feralfile.com</string>
 		<string>webcredentials:accounts.dev.feralfile.com</string>
-		<string>feralfile-app.test-app.link</string>
-		<string>applinks:feralfile-app-alternate.app.link</string>
-		<string>feralfile-app-alternate.test-app.link</string>
+	</array>
+	<key>com.apple.security.application-groups</key>
+	<array/>
+	<key>keychain-access-groups</key>
+	<array>
+		<string>$(AppIdentifierPrefix)com.bitmark.autonomywallet.keychain</string>
+		<string>$(AppIdentifierPrefix)com.bitmark.autonomy-wallet.inhouse.keychain</string>
 	</array>
 </dict>
 </plist>
diff --git a/ios/Runner/SystemChannelHandler 2.swift b/ios/Runner/SystemChannelHandler 2.swift
deleted file mode 100644
index 495948363..000000000
--- a/ios/Runner/SystemChannelHandler 2.swift	
+++ /dev/null
@@ -1,144 +0,0 @@
-//
-//  SPDX-License-Identifier: BSD-2-Clause-Patent
-//  Copyright © 2022 Bitmark. All rights reserved.
-//  Use of this source code is governed by the BSD-2-Clause Plus Patent License
-//  that can be found in the LICENSE file.
-//
-
-import Foundation
-import Flutter
-import Combine
-
-class SystemChannelHandler: NSObject {
-    
-    static let shared = SystemChannelHandler()
-    private var cancelBag = Set<AnyCancellable>()
-    
-    func exportMnemonicForAllPersonaUUIDs(call: FlutterMethodCall, result: @escaping FlutterResult) {
-        do {
-            // Fetch all mnemonics mapped to persona UUIDs
-            let mnemonicMap = try exportMnemonicForAllPersonaUUIDs()
-            
-            // Convert the result into a format Flutter can handle (e.g., a dictionary of String keys and array of strings)
-            var resultMap: [String: Any] = [:]
-            for (uuid, mnemonicWords) in mnemonicMap {
-                resultMap[uuid] = mnemonicWords
-            }
-            
-            // Send the result back to Flutter
-            result(resultMap)
-        } catch {
-            // Handle any errors that occur and send the error message back to Flutter
-            result(FlutterError(code: "EXPORT_MNEMONIC_ERROR",
-                                message: "Failed to export mnemonics: \(error.localizedDescription)",
-                                details: nil))
-        }
-    }
-    
-//    func removeKeychainItems(call: FlutterMethodCall, result: @escaping FlutterResult) {
-//        let args = call.arguments as! [String: Any]
-//        let account = args["account"] as? String
-//        let service = args["service"] as? String
-//        let secClass = args["secClass"] as! CFTypeRef
-//        removeKeychainItems(account: account, service: service, secClass: secClass)
-//        result(nil)
-//    }
-    
-//    private func removeKeychainItems(account: String? = nil, service: String? = nil, secClass: CFTypeRef = kSecClassGenericPassword) {
-//        var query: [String: Any] = [
-//            kSecClass as String: secClass,
-//            kSecReturnData as String: kCFBooleanTrue,
-//            kSecReturnAttributes as String : kCFBooleanTrue,
-//        ]
-//        
-//        if let account = account {
-//            query[kSecAttrAccount as String] = account
-//        }
-//        
-//        if let service = service {
-//            query[kSecAttrService as String] = service
-//        }
-//        
-//        let status = SecItemDelete(query as CFDictionary)
-//        
-//        if status == errSecSuccess {
-//            logger.info("Keychain item(s) removed successfully.")
-//        } else if status == errSecItemNotFound {
-//            logger.info("Keychain item(s) not found.")
-//        } else {
-//            if let error: String = SecCopyErrorMessageString(status, nil) as String? {
-//                logger.error(error)
-//            }
-//            
-//            logger.error("Error removing keychain item(s): \(status)")
-//        }
-//    }
-    
-    func exportMnemonicForAllPersonaUUIDs() throws -> [String: [String]] {
-        // define map: key is uuid, value is list from passphrase at index 0, the next are mnenmonic words
-        var mnemonicMap = [String: [String]]()
-
-        
-        // querry all keychain items
-        let query: NSDictionary = [
-            kSecClass: kSecClassGenericPassword,
-            kSecAttrSynchronizable: kCFBooleanTrue,
-            kSecReturnData: kCFBooleanTrue,
-            kSecAttrAccessible as String: kSecAttrAccessibleAfterFirstUnlock,
-            kSecReturnAttributes as String : kCFBooleanTrue,
-            kSecMatchLimit as String: kSecMatchLimitAll,
-            kSecAttrAccessGroup as String: Constant.keychainGroup,
-        ]
-        
-        var dataTypeRef: AnyObject?
-        let status = withUnsafeMutablePointer(to: &dataTypeRef) {
-            SecItemCopyMatching(query as CFDictionary, UnsafeMutablePointer($0))
-        }
-        guard status == noErr else {
-            throw LibAukError.other(reason: "Keychain query failed with status: \(status)")
-        }
-        
-            guard let array = dataTypeRef as? Array<Dictionary<String, Any>> else {
-                return []
-            }
-            
-            for item in array {
-                // filter seed keychain by check if have `seed` in key: personna.uuid_seed
-                if let key = item[kSecAttrAccount as String] as? String, key.contains("seed") {
-                    
-                    // get uuid
-                    let personaUUIDString = key
-                        .replacingOccurrences(of: "persona.", with: "")
-                        .replacingOccurrences(of: "_seed", with: "")
-                    
-                    if let data = item[kSecValueData as String] as? Data,
-                       let dataString = String(data: data, encoding: .utf8),
-                       let seed = try? Seed(urString: dataString) {
-                        var mnemonicWords = [seed.passphrase ?? ""]
-                        mnemonicWords.append(contentsOf: Keys.mnemonic(seed.data))
-                        mnemonicMap[personaUUIDString] = mnemonicWords
-                    }
-                }
-            }
-        
-        
-        return mnenmonicMap
-    }
-        
-    private func buildKeyAttr(prefix: String?, key: String) -> String {
-        if let prefix = prefix {
-            return "\(prefix)_\(key)"
-        } else {
-            return key
-        }
-    }
-}
-
-
-class Key {
-    static func mnemonic(_ entropy: Data) -> BIP39Mnemonic? {
-        let bip39entropy = BIP39Mnemonic.Entropy(entropy)
-
-        return try? BIP39Mnemonic(entropy: bip39entropy)
-    }
-}
diff --git a/ios/Runner/SystemChannelHandler.swift b/ios/Runner/SystemChannelHandler.swift
index e69de29bb..456861bcb 100644
--- a/ios/Runner/SystemChannelHandler.swift
+++ b/ios/Runner/SystemChannelHandler.swift
@@ -0,0 +1,94 @@
+//
+//  SPDX-License-Identifier: BSD-2-Clause-Patent
+//  Copyright © 2022 Bitmark. All rights reserved.
+//  Use of this source code is governed by the BSD-2-Clause Plus Patent License
+//  that can be found in the LICENSE file.
+//
+
+import Foundation
+import Flutter
+import Combine
+
+class SystemChannelHandler: NSObject {
+    
+    static let shared = SystemChannelHandler()
+    private var cancelBag = Set<AnyCancellable>()
+    
+    func exportMnemonicForAllPersonaUUIDs(call: FlutterMethodCall, result: @escaping FlutterResult) {
+        do {
+            // Fetch all mnemonics mapped to persona UUIDs
+            let mnemonicMap = try exportMnemonicForAllPersonaUUIDs()
+            
+            // Convert the result into a format Flutter can handle (e.g., a dictionary of String keys and array of strings)
+            var resultMap: [String: Any] = [:]
+            for (uuid, mnemonicWords) in mnemonicMap {
+                resultMap[uuid] = mnemonicWords
+            }
+            
+            // Send the result back to Flutter
+            result(resultMap)
+        } catch {
+            // Handle any errors that occur and send the error message back to Flutter
+            result(FlutterError(code: "EXPORT_MNEMONIC_ERROR",
+                                message: "Failed to export mnemonics: \(error.localizedDescription)",
+                                details: nil))
+        }
+    }
+
+    
+    func exportMnemonicForAllPersonaUUIDs() throws -> [String: [String]] {
+        // define map: key is uuid, value is list from passphrase at index 0, the next are mnenmonic words
+        var mnemonicMap = [String: [String]]()
+        
+        // querry all keychain items
+        let query: NSDictionary = [
+            kSecClass: kSecClassGenericPassword,
+            kSecAttrSynchronizable: kCFBooleanTrue,
+            kSecReturnData: kCFBooleanTrue,
+            kSecAttrAccessible as String: kSecAttrAccessibleAfterFirstUnlock,
+            kSecReturnAttributes as String : kCFBooleanTrue,
+            kSecMatchLimit as String: kSecMatchLimitAll,
+            kSecAttrAccessGroup as String: Constant.keychainGroup,
+        ]
+        
+        var dataTypeRef: AnyObject?
+        let status = withUnsafeMutablePointer(to: &dataTypeRef) {
+            SecItemCopyMatching(query as CFDictionary, UnsafeMutablePointer($0))
+        }
+        guard status == noErr else {
+            throw LibAukError.other(reason: "Keychain query failed with status: \(status)")
+        }
+        
+        guard let array = dataTypeRef as? Array<Dictionary<String, Any>> else {
+            return [:]
+        }
+        
+        for item in array {
+            // filter seed keychain by check if have `seed` in key: personna.uuid_seed
+            if let key = item[kSecAttrAccount as String] as? String, key.contains("seed") {
+                
+                // get uuid
+                let personaUUIDString = key
+                    .replacingOccurrences(of: "persona.", with: "")
+                    .replacingOccurrences(of: "_seed", with: "")
+                
+                if let data = item[kSecValueData as String] as? Data,
+                   let dataString = String(data: data, encoding: .utf8),
+                   let seed = try? Seed(urString: dataString),
+                   let mnemonicWords = try? Mnemonic.toMnemonic([UInt8](seed.data)){
+                    mnemonicMap[personaUUIDString] = mnemonicWords
+                }
+            }
+        }
+        
+        return mnemonicMap
+    }
+        
+    private func buildKeyAttr(prefix: String?, key: String) -> String {
+        if let prefix = prefix {
+            return "\(prefix)_\(key)"
+        } else {
+            return key
+        }
+    }
+}
diff --git a/ios/Runner/model/Mnemonic.swift b/ios/Runner/model/Mnemonic.swift
new file mode 100644
index 000000000..4a7aa78d0
--- /dev/null
+++ b/ios/Runner/model/Mnemonic.swift
@@ -0,0 +1,128 @@
+//
+//  Mnemonic.swift
+//
+//  See BIP39 specification for more info:
+//  https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
+//
+//  Created by Liu Pengpeng on 2019/10/10.
+//
+
+import Foundation
+import CryptoKit
+
+public class Mnemonic {
+    public enum Error: Swift.Error {
+        case invalidMnemonic
+        case invalidEntropy
+    }
+    
+    public let phrase: [String]
+    let passphrase: String
+    
+    public init(strength: Int = 128, wordlist: [String] = Wordlists.english) {
+        precondition(strength % 32 == 0, "Invalid entropy")
+        
+        // 1.Random Bytes
+        var bytes = [UInt8](repeating: 0, count: strength / 8)
+        _ = SecRandomCopyBytes(kSecRandomDefault, bytes.count, &bytes)
+        
+        // 2.Entropy -> Mnemonic
+        let entropyBits = String(bytes.flatMap { ("00000000" + String($0, radix:2)).suffix(8) })
+        let checksumBits = Mnemonic.deriveChecksumBits(bytes)
+        let bits = entropyBits + checksumBits
+        
+        var phrase = [String]()
+        for i in 0..<(bits.count / 11) {
+            let wi = Int(bits[bits.index(bits.startIndex, offsetBy: i * 11)..<bits.index(bits.startIndex, offsetBy: (i + 1) * 11)], radix: 2)!
+            phrase.append(String(wordlist[wi]))
+        }
+        
+        self.phrase = phrase
+        self.passphrase = ""
+    }
+    
+    public init(phrase: [String], passphrase: String = "") throws {
+        if (!Mnemonic.isValid(phrase: phrase)) {
+            throw Error.invalidMnemonic
+        }
+        self.phrase = phrase
+        self.passphrase = passphrase
+    }
+    
+    public init(entropy: [UInt8], wordlist: [String] = Wordlists.english) throws {
+        self.phrase = try Mnemonic.toMnemonic(entropy, wordlist: wordlist)
+        self.passphrase = ""
+    }
+    
+    // Entropy -> Mnemonic
+    public static func toMnemonic(_ bytes: [UInt8], wordlist: [String] = Wordlists.english) throws -> [String] {
+        let entropyBits = String(bytes.flatMap { ("00000000" + String($0, radix:2)).suffix(8) })
+        let checksumBits = Mnemonic.deriveChecksumBits(bytes)
+        let bits = entropyBits + checksumBits
+        
+        var phrase = [String]()
+        for i in 0..<(bits.count / 11) {
+            let wi = Int(bits[bits.index(bits.startIndex, offsetBy: i * 11)..<bits.index(bits.startIndex, offsetBy: (i + 1) * 11)], radix: 2)!
+            phrase.append(String(wordlist[wi]))
+        }
+        return phrase
+    }
+    
+    // Mnemonic -> Entropy
+    public static func toEntropy(_ phrase: [String], wordlist: [String] = Wordlists.english) throws -> [UInt8] {
+        let bits = phrase.map { (word) -> String in
+            let index = wordlist.firstIndex(of: word)!
+            var str = String(index, radix:2)
+            while str.count < 11 {
+                str = "0" + str
+            }
+            return str
+        }.joined(separator: "")
+        
+        let dividerIndex = Int(Double(bits.count / 33).rounded(.down) * 32)
+        let entropyBits = String(bits.prefix(dividerIndex))
+        let checksumBits = String(bits.suffix(bits.count - dividerIndex))
+        
+        let regex = try! NSRegularExpression(pattern: "[01]{1,8}", options: .caseInsensitive)
+        let entropyBytes = regex.matches(in: entropyBits, options: [], range: NSRange(location: 0, length: entropyBits.count)).map {
+            UInt8(strtoul(String(entropyBits[Range($0.range, in: entropyBits)!]), nil, 2))
+        }
+        if (checksumBits != Mnemonic.deriveChecksumBits(entropyBytes)) {
+            throw Error.invalidMnemonic
+        }
+        return entropyBytes
+    }
+    
+    public static func isValid(phrase: [String], wordlist: [String] = Wordlists.english) -> Bool {
+        var bits = ""
+        for word in phrase {
+            guard let i = wordlist.firstIndex(of: word) else { return false }
+            bits += ("00000000000" + String(i, radix: 2)).suffix(11)
+        }
+        
+        let dividerIndex = bits.count / 33 * 32
+        let entropyBits = String(bits.prefix(dividerIndex))
+        let checksumBits = String(bits.suffix(bits.count - dividerIndex))
+        
+        let regex = try! NSRegularExpression(pattern: "[01]{1,8}", options: .caseInsensitive)
+        let entropyBytes = regex.matches(in: entropyBits, options: [], range: NSRange(location: 0, length: entropyBits.count)).map {
+            UInt8(strtoul(String(entropyBits[Range($0.range, in: entropyBits)!]), nil, 2))
+        }
+        return checksumBits == deriveChecksumBits(entropyBytes)
+    }
+    
+    public static func deriveChecksumBits(_ bytes: [UInt8]) -> String {
+        let ENT = bytes.count * 8;
+        let CS = ENT / 32
+        
+        let hash = SHA256.hash(data: bytes)
+        let hashbits = String(hash.flatMap { ("00000000" + String($0, radix:2)).suffix(8) })
+        return String(hashbits.prefix(CS))
+    }
+}
+
+extension Mnemonic: Equatable {
+    public static func == (lhs: Mnemonic, rhs: Mnemonic) -> Bool {
+        return lhs.phrase == rhs.phrase && lhs.passphrase == rhs.passphrase
+    }
+}
\ No newline at end of file
diff --git a/ios/Runner/model/Seed.swift b/ios/Runner/model/Seed.swift
index 46f718ccc..c4ce89a6a 100644
--- a/ios/Runner/model/Seed.swift
+++ b/ios/Runner/model/Seed.swift
@@ -21,99 +21,34 @@ public class Seed: Codable {
         self.passphrase = passphrase
     }
     
-    func cbor(nameLimit: Int? = nil, noteLimit: Int? = nil) -> CBOR {
-        var a: [OrderedMap.Entry] = [
-            .init(key: 1, value: CBOR.data(data))
-        ]
-        
-        if let creationDate = creationDate {
-            a.append(.init(key: 2, value: CBOR.date(creationDate)))
-        }
-        
-        if !name.isEmpty {
-            a.append(.init(key: 3, value: CBOR.utf8String(name)))
+    convenience init(urString: String) throws {
+        guard let ur = try? UR(urString: urString) else {
+            throw LibAukError.other(reason: "ur:crypto-seed: Invalid UR data.")
         }
         
-        if let passphrase = passphrase, !passphrase.isEmpty {
-            a.append(.init(key: 4, value: CBOR.utf8String(passphrase)))
+        guard let cbor = try? CBOR(ur.cbor) else {
+            throw LibAukError.other(reason: "ur:crypto-seed: Invalid CBOR data.")
         }
         
-        return CBOR.orderedMap(OrderedMap(a))
-    }
-    
-    public var ur: UR {
-        try! UR(type: "crypto-seed", cbor: cbor())
-    }
-    
-    public var urString: String {
-        UREncoder.encode(ur)
-    }
-    
-    convenience init(urString: String) throws {
-        let ur = try URDecoder.decode(urString)
-        try self.init(ur: ur)
-    }
-    
-    convenience init(ur: UR) throws {
-        guard ur.type == "crypto-seed" else {
-            throw LibAukError.other(reason: "Unexpected UR type.")
-        }
-        try self.init(cborData: ur.cbor)
-    }
-
-    convenience init(cborData: Data) throws {
-        guard let cbor = try? CBOR(cborData) else {
-            throw LibAukError.other(reason: "ur:crypto-seed: Invalid CBOR.")
-        }
-        try self.init(cbor: cbor)
-    }
-    
-    convenience init(cbor: CBOR) throws {
-        guard case let CBOR.orderedMap(orderedMap) = cbor else {
+        guard case .map(let map) = cbor else {
             throw LibAukError.other(reason: "ur:crypto-seed: CBOR doesn't contain a map.")
         }
-
-        let iterator = orderedMap.makeIterator()
+        
+        // Loop through the map to find the first bytes data
         var seedData: Data?
-        var creationDate: Date? = nil
-        var name: String = ""
-        var passphrase: String = ""
-
-        while let element = iterator.next() {
-            let (indexElement, valueElement) = element
-
-            guard case let CBOR.unsignedInt(index) = indexElement else {
-                throw LibAukError.other(reason: "ur:crypto-seed: CBOR contains invalid keys.")
-            }
-
-            switch index {
-            case 1:
-                guard case let CBOR.data(data) = valueElement else {
-                    throw LibAukError.other(reason: "ur:crypto-seed: CBOR doesn't contain data field.")
-                }
+        for (_, value) in map {
+            if case .bytes(let data) = value {
                 seedData = data
-            case 2:
-                guard case let CBOR.date(d) = valueElement else {
-                    throw LibAukError.other(reason: "ur:crypto-seed: CreationDate field doesn't contain a date.")
-                }
-                creationDate = d
-            case 3:
-                guard case let CBOR.utf8String(s) = valueElement else {
-                    throw LibAukError.other(reason: "ur:crypto-seed: Name field doesn't contain a string.")
-                }
-                name = s
-            case 4:
-                guard case let CBOR.utf8String(s) = valueElement else {
-                    throw LibAukError.other(reason: "ur:crypto-seed: Passphrase field doesn't contain a string.")
-                }
-                passphrase = s
-            default:
-                throw LibAukError.other(reason: "ur:crypto-seed: CBOR contains invalid keys.")
+                break
             }
         }
         
+        // Verify we found valid seed data
+        guard let finalSeedData = seedData else {
+            throw LibAukError.other(reason: "ur:crypto-seed: Missing or invalid seed data.")
+        }
         
-        self.init(data: seedData!, name: name, creationDate: creationDate, passphrase: passphrase)
+        self.init(data: finalSeedData, name: "")
     }
 }
 
diff --git a/ios/Runner/model/WordList.swift b/ios/Runner/model/WordList.swift
new file mode 100644
index 000000000..7eb6e7b19
--- /dev/null
+++ b/ios/Runner/model/WordList.swift
@@ -0,0 +1,5 @@
+import Foundation
+
+public struct Wordlists {
+    public static let english = ["abandon", "ability", "able", "about", "above", "absent", "absorb", "abstract", "absurd", "abuse", "access", "accident", "account", "accuse", "achieve", "acid", "acoustic", "acquire", "across", "act", "action", "actor", "actress", "actual", "adapt", "add", "addict", "address", "adjust", "admit", "adult", "advance", "advice", "aerobic", "affair", "afford", "afraid", "again", "age", "agent", "agree", "ahead", "aim", "air", "airport", "aisle", "alarm", "album", "alcohol", "alert", "alien", "all", "alley", "allow", "almost", "alone", "alpha", "already", "also", "alter", "always", "amateur", "amazing", "among", "amount", "amused", "analyst", "anchor", "ancient", "anger", "angle", "angry", "animal", "ankle", "announce", "annual", "another", "answer", "antenna", "antique", "anxiety", "any", "apart", "apology", "appear", "apple", "approve", "april", "arch", "arctic", "area", "arena", "argue", "arm", "armed", "armor", "army", "around", "arrange", "arrest", "arrive", "arrow", "art", "artefact", "artist", "artwork", "ask", "aspect", "assault", "asset", "assist", "assume", "asthma", "athlete", "atom", "attack", "attend", "attitude", "attract", "auction", "audit", "august", "aunt", "author", "auto", "autumn", "average", "avocado", "avoid", "awake", "aware", "away", "awesome", "awful", "awkward", "axis", "baby", "bachelor", "bacon", "badge", "bag", "balance", "balcony", "ball", "bamboo", "banana", "banner", "bar", "barely", "bargain", "barrel", "base", "basic", "basket", "battle", "beach", "bean", "beauty", "because", "become", "beef", "before", "begin", "behave", "behind", "believe", "below", "belt", "bench", "benefit", "best", "betray", "better", "between", "beyond", "bicycle", "bid", "bike", "bind", "biology", "bird", "birth", "bitter", "black", "blade", "blame", "blanket", "blast", "bleak", "bless", "blind", "blood", "blossom", "blouse", "blue", "blur", "blush", "board", "boat", "body", "boil", "bomb", "bone", "bonus", "book", "boost", "border", "boring", "borrow", "boss", "bottom", "bounce", "box", "boy", "bracket", "brain", "brand", "brass", "brave", "bread", "breeze", "brick", "bridge", "brief", "bright", "bring", "brisk", "broccoli", "broken", "bronze", "broom", "brother", "brown", "brush", "bubble", "buddy", "budget", "buffalo", "build", "bulb", "bulk", "bullet", "bundle", "bunker", "burden", "burger", "burst", "bus", "business", "busy", "butter", "buyer", "buzz", "cabbage", "cabin", "cable", "cactus", "cage", "cake", "call", "calm", "camera", "camp", "can", "canal", "cancel", "candy", "cannon", "canoe", "canvas", "canyon", "capable", "capital", "captain", "car", "carbon", "card", "cargo", "carpet", "carry", "cart", "case", "cash", "casino", "castle", "casual", "cat", "catalog", "catch", "category", "cattle", "caught", "cause", "caution", "cave", "ceiling", "celery", "cement", "census", "century", "cereal", "certain", "chair", "chalk", "champion", "change", "chaos", "chapter", "charge", "chase", "chat", "cheap", "check", "cheese", "chef", "cherry", "chest", "chicken", "chief", "child", "chimney", "choice", "choose", "chronic", "chuckle", "chunk", "churn", "cigar", "cinnamon", "circle", "citizen", "city", "civil", "claim", "clap", "clarify", "claw", "clay", "clean", "clerk", "clever", "click", "client", "cliff", "climb", "clinic", "clip", "clock", "clog", "close", "cloth", "cloud", "clown", "club", "clump", "cluster", "clutch", "coach", "coast", "coconut", "code", "coffee", "coil", "coin", "collect", "color", "column", "combine", "come", "comfort", "comic", "common", "company", "concert", "conduct", "confirm", "congress", "connect", "consider", "control", "convince", "cook", "cool", "copper", "copy", "coral", "core", "corn", "correct", "cost", "cotton", "couch", "country", "couple", "course", "cousin", "cover", "coyote", "crack", "cradle", "craft", "cram", "crane", "crash", "crater", "crawl", "crazy", "cream", "credit", "creek", "crew", "cricket", "crime", "crisp", "critic", "crop", "cross", "crouch", "crowd", "crucial", "cruel", "cruise", "crumble", "crunch", "crush", "cry", "crystal", "cube", "culture", "cup", "cupboard", "curious", "current", "curtain", "curve", "cushion", "custom", "cute", "cycle", "dad", "damage", "damp", "dance", "danger", "daring", "dash", "daughter", "dawn", "day", "deal", "debate", "debris", "decade", "december", "decide", "decline", "decorate", "decrease", "deer", "defense", "define", "defy", "degree", "delay", "deliver", "demand", "demise", "denial", "dentist", "deny", "depart", "depend", "deposit", "depth", "deputy", "derive", "describe", "desert", "design", "desk", "despair", "destroy", "detail", "detect", "develop", "device", "devote", "diagram", "dial", "diamond", "diary", "dice", "diesel", "diet", "differ", "digital", "dignity", "dilemma", "dinner", "dinosaur", "direct", "dirt", "disagree", "discover", "disease", "dish", "dismiss", "disorder", "display", "distance", "divert", "divide", "divorce", "dizzy", "doctor", "document", "dog", "doll", "dolphin", "domain", "donate", "donkey", "donor", "door", "dose", "double", "dove", "draft", "dragon", "drama", "drastic", "draw", "dream", "dress", "drift", "drill", "drink", "drip", "drive", "drop", "drum", "dry", "duck", "dumb", "dune", "during", "dust", "dutch", "duty", "dwarf", "dynamic", "eager", "eagle", "early", "earn", "earth", "easily", "east", "easy", "echo", "ecology", "economy", "edge", "edit", "educate", "effort", "egg", "eight", "either", "elbow", "elder", "electric", "elegant", "element", "elephant", "elevator", "elite", "else", "embark", "embody", "embrace", "emerge", "emotion", "employ", "empower", "empty", "enable", "enact", "end", "endless", "endorse", "enemy", "energy", "enforce", "engage", "engine", "enhance", "enjoy", "enlist", "enough", "enrich", "enroll", "ensure", "enter", "entire", "entry", "envelope", "episode", "equal", "equip", "era", "erase", "erode", "erosion", "error", "erupt", "escape", "essay", "essence", "estate", "eternal", "ethics", "evidence", "evil", "evoke", "evolve", "exact", "example", "excess", "exchange", "excite", "exclude", "excuse", "execute", "exercise", "exhaust", "exhibit", "exile", "exist", "exit", "exotic", "expand", "expect", "expire", "explain", "expose", "express", "extend", "extra", "eye", "eyebrow", "fabric", "face", "faculty", "fade", "faint", "faith", "fall", "false", "fame", "family", "famous", "fan", "fancy", "fantasy", "farm", "fashion", "fat", "fatal", "father", "fatigue", "fault", "favorite", "feature", "february", "federal", "fee", "feed", "feel", "female", "fence", "festival", "fetch", "fever", "few", "fiber", "fiction", "field", "figure", "file", "film", "filter", "final", "find", "fine", "finger", "finish", "fire", "firm", "first", "fiscal", "fish", "fit", "fitness", "fix", "flag", "flame", "flash", "flat", "flavor", "flee", "flight", "flip", "float", "flock", "floor", "flower", "fluid", "flush", "fly", "foam", "focus", "fog", "foil", "fold", "follow", "food", "foot", "force", "forest", "forget", "fork", "fortune", "forum", "forward", "fossil", "foster", "found", "fox", "fragile", "frame", "frequent", "fresh", "friend", "fringe", "frog", "front", "frost", "frown", "frozen", "fruit", "fuel", "fun", "funny", "furnace", "fury", "future", "gadget", "gain", "galaxy", "gallery", "game", "gap", "garage", "garbage", "garden", "garlic", "garment", "gas", "gasp", "gate", "gather", "gauge", "gaze", "general", "genius", "genre", "gentle", "genuine", "gesture", "ghost", "giant", "gift", "giggle", "ginger", "giraffe", "girl", "give", "glad", "glance", "glare", "glass", "glide", "glimpse", "globe", "gloom", "glory", "glove", "glow", "glue", "goat", "goddess", "gold", "good", "goose", "gorilla", "gospel", "gossip", "govern", "gown", "grab", "grace", "grain", "grant", "grape", "grass", "gravity", "great", "green", "grid", "grief", "grit", "grocery", "group", "grow", "grunt", "guard", "guess", "guide", "guilt", "guitar", "gun", "gym", "habit", "hair", "half", "hammer", "hamster", "hand", "happy", "harbor", "hard", "harsh", "harvest", "hat", "have", "hawk", "hazard", "head", "health", "heart", "heavy", "hedgehog", "height", "hello", "helmet", "help", "hen", "hero", "hidden", "high", "hill", "hint", "hip", "hire", "history", "hobby", "hockey", "hold", "hole", "holiday", "hollow", "home", "honey", "hood", "hope", "horn", "horror", "horse", "hospital", "host", "hotel", "hour", "hover", "hub", "huge", "human", "humble", "humor", "hundred", "hungry", "hunt", "hurdle", "hurry", "hurt", "husband", "hybrid", "ice", "icon", "idea", "identify", "idle", "ignore", "ill", "illegal", "illness", "image", "imitate", "immense", "immune", "impact", "impose", "improve", "impulse", "inch", "include", "income", "increase", "index", "indicate", "indoor", "industry", "infant", "inflict", "inform", "inhale", "inherit", "initial", "inject", "injury", "inmate", "inner", "innocent", "input", "inquiry", "insane", "insect", "inside", "inspire", "install", "intact", "interest", "into", "invest", "invite", "involve", "iron", "island", "isolate", "issue", "item", "ivory", "jacket", "jaguar", "jar", "jazz", "jealous", "jeans", "jelly", "jewel", "job", "join", "joke", "journey", "joy", "judge", "juice", "jump", "jungle", "junior", "junk", "just", "kangaroo", "keen", "keep", "ketchup", "key", "kick", "kid", "kidney", "kind", "kingdom", "kiss", "kit", "kitchen", "kite", "kitten", "kiwi", "knee", "knife", "knock", "know", "lab", "label", "labor", "ladder", "lady", "lake", "lamp", "language", "laptop", "large", "later", "latin", "laugh", "laundry", "lava", "law", "lawn", "lawsuit", "layer", "lazy", "leader", "leaf", "learn", "leave", "lecture", "left", "leg", "legal", "legend", "leisure", "lemon", "lend", "length", "lens", "leopard", "lesson", "letter", "level", "liar", "liberty", "library", "license", "life", "lift", "light", "like", "limb", "limit", "link", "lion", "liquid", "list", "little", "live", "lizard", "load", "loan", "lobster", "local", "lock", "logic", "lonely", "long", "loop", "lottery", "loud", "lounge", "love", "loyal", "lucky", "luggage", "lumber", "lunar", "lunch", "luxury", "lyrics", "machine", "mad", "magic", "magnet", "maid", "mail", "main", "major", "make", "mammal", "man", "manage", "mandate", "mango", "mansion", "manual", "maple", "marble", "march", "margin", "marine", "market", "marriage", "mask", "mass", "master", "match", "material", "math", "matrix", "matter", "maximum", "maze", "meadow", "mean", "measure", "meat", "mechanic", "medal", "media", "melody", "melt", "member", "memory", "mention", "menu", "mercy", "merge", "merit", "merry", "mesh", "message", "metal", "method", "middle", "midnight", "milk", "million", "mimic", "mind", "minimum", "minor", "minute", "miracle", "mirror", "misery", "miss", "mistake", "mix", "mixed", "mixture", "mobile", "model", "modify", "mom", "moment", "monitor", "monkey", "monster", "month", "moon", "moral", "more", "morning", "mosquito", "mother", "motion", "motor", "mountain", "mouse", "move", "movie", "much", "muffin", "mule", "multiply", "muscle", "museum", "mushroom", "music", "must", "mutual", "myself", "mystery", "myth", "naive", "name", "napkin", "narrow", "nasty", "nation", "nature", "near", "neck", "need", "negative", "neglect", "neither", "nephew", "nerve", "nest", "net", "network", "neutral", "never", "news", "next", "nice", "night", "noble", "noise", "nominee", "noodle", "normal", "north", "nose", "notable", "note", "nothing", "notice", "novel", "now", "nuclear", "number", "nurse", "nut", "oak", "obey", "object", "oblige", "obscure", "observe", "obtain", "obvious", "occur", "ocean", "october", "odor", "off", "offer", "office", "often", "oil", "okay", "old", "olive", "olympic", "omit", "once", "one", "onion", "online", "only", "open", "opera", "opinion", "oppose", "option", "orange", "orbit", "orchard", "order", "ordinary", "organ", "orient", "original", "orphan", "ostrich", "other", "outdoor", "outer", "output", "outside", "oval", "oven", "over", "own", "owner", "oxygen", "oyster", "ozone", "pact", "paddle", "page", "pair", "palace", "palm", "panda", "panel", "panic", "panther", "paper", "parade", "parent", "park", "parrot", "party", "pass", "patch", "path", "patient", "patrol", "pattern", "pause", "pave", "payment", "peace", "peanut", "pear", "peasant", "pelican", "pen", "penalty", "pencil", "people", "pepper", "perfect", "permit", "person", "pet", "phone", "photo", "phrase", "physical", "piano", "picnic", "picture", "piece", "pig", "pigeon", "pill", "pilot", "pink", "pioneer", "pipe", "pistol", "pitch", "pizza", "place", "planet", "plastic", "plate", "play", "please", "pledge", "pluck", "plug", "plunge", "poem", "poet", "point", "polar", "pole", "police", "pond", "pony", "pool", "popular", "portion", "position", "possible", "post", "potato", "pottery", "poverty", "powder", "power", "practice", "praise", "predict", "prefer", "prepare", "present", "pretty", "prevent", "price", "pride", "primary", "print", "priority", "prison", "private", "prize", "problem", "process", "produce", "profit", "program", "project", "promote", "proof", "property", "prosper", "protect", "proud", "provide", "public", "pudding", "pull", "pulp", "pulse", "pumpkin", "punch", "pupil", "puppy", "purchase", "purity", "purpose", "purse", "push", "put", "puzzle", "pyramid", "quality", "quantum", "quarter", "question", "quick", "quit", "quiz", "quote", "rabbit", "raccoon", "race", "rack", "radar", "radio", "rail", "rain", "raise", "rally", "ramp", "ranch", "random", "range", "rapid", "rare", "rate", "rather", "raven", "raw", "razor", "ready", "real", "reason", "rebel", "rebuild", "recall", "receive", "recipe", "record", "recycle", "reduce", "reflect", "reform", "refuse", "region", "regret", "regular", "reject", "relax", "release", "relief", "rely", "remain", "remember", "remind", "remove", "render", "renew", "rent", "reopen", "repair", "repeat", "replace", "report", "require", "rescue", "resemble", "resist", "resource", "response", "result", "retire", "retreat", "return", "reunion", "reveal", "review", "reward", "rhythm", "rib", "ribbon", "rice", "rich", "ride", "ridge", "rifle", "right", "rigid", "ring", "riot", "ripple", "risk", "ritual", "rival", "river", "road", "roast", "robot", "robust", "rocket", "romance", "roof", "rookie", "room", "rose", "rotate", "rough", "round", "route", "royal", "rubber", "rude", "rug", "rule", "run", "runway", "rural", "sad", "saddle", "sadness", "safe", "sail", "salad", "salmon", "salon", "salt", "salute", "same", "sample", "sand", "satisfy", "satoshi", "sauce", "sausage", "save", "say", "scale", "scan", "scare", "scatter", "scene", "scheme", "school", "science", "scissors", "scorpion", "scout", "scrap", "screen", "script", "scrub", "sea", "search", "season", "seat", "second", "secret", "section", "security", "seed", "seek", "segment", "select", "sell", "seminar", "senior", "sense", "sentence", "series", "service", "session", "settle", "setup", "seven", "shadow", "shaft", "shallow", "share", "shed", "shell", "sheriff", "shield", "shift", "shine", "ship", "shiver", "shock", "shoe", "shoot", "shop", "short", "shoulder", "shove", "shrimp", "shrug", "shuffle", "shy", "sibling", "sick", "side", "siege", "sight", "sign", "silent", "silk", "silly", "silver", "similar", "simple", "since", "sing", "siren", "sister", "situate", "six", "size", "skate", "sketch", "ski", "skill", "skin", "skirt", "skull", "slab", "slam", "sleep", "slender", "slice", "slide", "slight", "slim", "slogan", "slot", "slow", "slush", "small", "smart", "smile", "smoke", "smooth", "snack", "snake", "snap", "sniff", "snow", "soap", "soccer", "social", "sock", "soda", "soft", "solar", "soldier", "solid", "solution", "solve", "someone", "song", "soon", "sorry", "sort", "soul", "sound", "soup", "source", "south", "space", "spare", "spatial", "spawn", "speak", "special", "speed", "spell", "spend", "sphere", "spice", "spider", "spike", "spin", "spirit", "split", "spoil", "sponsor", "spoon", "sport", "spot", "spray", "spread", "spring", "spy", "square", "squeeze", "squirrel", "stable", "stadium", "staff", "stage", "stairs", "stamp", "stand", "start", "state", "stay", "steak", "steel", "stem", "step", "stereo", "stick", "still", "sting", "stock", "stomach", "stone", "stool", "story", "stove", "strategy", "street", "strike", "strong", "struggle", "student", "stuff", "stumble", "style", "subject", "submit", "subway", "success", "such", "sudden", "suffer", "sugar", "suggest", "suit", "summer", "sun", "sunny", "sunset", "super", "supply", "supreme", "sure", "surface", "surge", "surprise", "surround", "survey", "suspect", "sustain", "swallow", "swamp", "swap", "swarm", "swear", "sweet", "swift", "swim", "swing", "switch", "sword", "symbol", "symptom", "syrup", "system", "table", "tackle", "tag", "tail", "talent", "talk", "tank", "tape", "target", "task", "taste", "tattoo", "taxi", "teach", "team", "tell", "ten", "tenant", "tennis", "tent", "term", "test", "text", "thank", "that", "theme", "then", "theory", "there", "they", "thing", "this", "thought", "three", "thrive", "throw", "thumb", "thunder", "ticket", "tide", "tiger", "tilt", "timber", "time", "tiny", "tip", "tired", "tissue", "title", "toast", "tobacco", "today", "toddler", "toe", "together", "toilet", "token", "tomato", "tomorrow", "tone", "tongue", "tonight", "tool", "tooth", "top", "topic", "topple", "torch", "tornado", "tortoise", "toss", "total", "tourist", "toward", "tower", "town", "toy", "track", "trade", "traffic", "tragic", "train", "transfer", "trap", "trash", "travel", "tray", "treat", "tree", "trend", "trial", "tribe", "trick", "trigger", "trim", "trip", "trophy", "trouble", "truck", "true", "truly", "trumpet", "trust", "truth", "try", "tube", "tuition", "tumble", "tuna", "tunnel", "turkey", "turn", "turtle", "twelve", "twenty", "twice", "twin", "twist", "two", "type", "typical", "ugly", "umbrella", "unable", "unaware", "uncle", "uncover", "under", "undo", "unfair", "unfold", "unhappy", "uniform", "unique", "unit", "universe", "unknown", "unlock", "until", "unusual", "unveil", "update", "upgrade", "uphold", "upon", "upper", "upset", "urban", "urge", "usage", "use", "used", "useful", "useless", "usual", "utility", "vacant", "vacuum", "vague", "valid", "valley", "valve", "van", "vanish", "vapor", "various", "vast", "vault", "vehicle", "velvet", "vendor", "venture", "venue", "verb", "verify", "version", "very", "vessel", "veteran", "viable", "vibrant", "vicious", "victory", "video", "view", "village", "vintage", "violin", "virtual", "virus", "visa", "visit", "visual", "vital", "vivid", "vocal", "voice", "void", "volcano", "volume", "vote", "voyage", "wage", "wagon", "wait", "walk", "wall", "walnut", "want", "warfare", "warm", "warrior", "wash", "wasp", "waste", "water", "wave", "way", "wealth", "weapon", "wear", "weasel", "weather", "web", "wedding", "weekend", "weird", "welcome", "west", "wet", "whale", "what", "wheat", "wheel", "when", "where", "whip", "whisper", "wide", "width", "wife", "wild", "will", "win", "window", "wine", "wing", "wink", "winner", "winter", "wire", "wisdom", "wise", "wish", "witness", "wolf", "woman", "wonder", "wood", "wool", "word", "work", "world", "worry", "worth", "wrap", "wreck", "wrestle", "wrist", "write", "wrong", "yard", "year", "yellow", "you", "young", "youth", "zebra", "zero", "zone", "zoo"]
+}