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4fc4790 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | import Foundation
import Security
enum KeychainStore {
static func loadString(service: String, account: String) -> String? {
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrService as String: service,
kSecAttrAccount as String: account,
kSecReturnData as String: true,
kSecMatchLimit as String: kSecMatchLimitOne,
]
var item: CFTypeRef?
let status = SecItemCopyMatching(query as CFDictionary, &item)
guard status == errSecSuccess, let data = item as? Data else { return nil }
return String(data: data, encoding: .utf8)
}
static func saveString(_ value: String, service: String, account: String) -> Bool {
let data = Data(value.utf8)
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrService as String: service,
kSecAttrAccount as String: account,
]
let update: [String: Any] = [kSecValueData as String: data]
let status = SecItemUpdate(query as CFDictionary, update as CFDictionary)
if status == errSecSuccess { return true }
if status != errSecItemNotFound { return false }
var insert = query
insert[kSecValueData as String] = data
insert[kSecAttrAccessible as String] = kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly
return SecItemAdd(insert as CFDictionary, nil) == errSecSuccess
}
static func delete(service: String, account: String) -> Bool {
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrService as String: service,
kSecAttrAccount as String: account,
]
let status = SecItemDelete(query as CFDictionary)
return status == errSecSuccess || status == errSecItemNotFound
}
}
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