initial version

2026-01-15 09:24:06 +01:00
parent bab350dd22
commit 7988257399
139 changed files with 13149 additions and 3233 deletions
@@ -0,0 +1,47 @@
+import Foundation
+import Security
+
+enum KeychainService {
+    private static let service = "PortfolioJournal"
+    private static let pinKey = "appLockPin"
+
+    static func savePin(_ pin: String) -> Bool {
+        guard let data = pin.data(using: .utf8) else { return false }
+        deletePin()
+        let query: [CFString: Any] = [
+            kSecClass: kSecClassGenericPassword,
+            kSecAttrService: service,
+            kSecAttrAccount: pinKey,
+            kSecValueData: data
+        ]
+        return SecItemAdd(query as CFDictionary, nil) == errSecSuccess
+    }
+
+    static func readPin() -> String? {
+        let query: [CFString: Any] = [
+            kSecClass: kSecClassGenericPassword,
+            kSecAttrService: service,
+            kSecAttrAccount: pinKey,
+            kSecReturnData: true,
+            kSecMatchLimit: kSecMatchLimitOne
+        ]
+
+        var result: AnyObject?
+        let status = SecItemCopyMatching(query as CFDictionary, &result)
+        guard status == errSecSuccess,
+              let data = result as? Data,
+              let pin = String(data: data, encoding: .utf8) else {
+            return nil
+        }
+        return pin
+    }
+
+    static func deletePin() {
+        let query: [CFString: Any] = [
+            kSecClass: kSecClassGenericPassword,
+            kSecAttrService: service,
+            kSecAttrAccount: pinKey
+        ]
+        SecItemDelete(query as CFDictionary)
+    }
+}