48 lines
1.4 KiB
Swift
48 lines
1.4 KiB
Swift
import Foundation
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import Security
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enum KeychainService {
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private static let service = "PortfolioJournal"
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private static let pinKey = "appLockPin"
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static func savePin(_ pin: String) -> Bool {
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guard let data = pin.data(using: .utf8) else { return false }
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deletePin()
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let query: [CFString: Any] = [
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kSecClass: kSecClassGenericPassword,
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kSecAttrService: service,
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kSecAttrAccount: pinKey,
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kSecValueData: data
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]
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return SecItemAdd(query as CFDictionary, nil) == errSecSuccess
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}
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static func readPin() -> String? {
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let query: [CFString: Any] = [
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kSecClass: kSecClassGenericPassword,
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kSecAttrService: service,
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kSecAttrAccount: pinKey,
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kSecReturnData: true,
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kSecMatchLimit: kSecMatchLimitOne
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]
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var result: AnyObject?
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let status = SecItemCopyMatching(query as CFDictionary, &result)
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guard status == errSecSuccess,
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let data = result as? Data,
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let pin = String(data: data, encoding: .utf8) else {
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return nil
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}
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return pin
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}
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static func deletePin() {
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let query: [CFString: Any] = [
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kSecClass: kSecClassGenericPassword,
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kSecAttrService: service,
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kSecAttrAccount: pinKey
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]
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SecItemDelete(query as CFDictionary)
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}
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}
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