SecItemUpdate失败-25293

Question

如果在KeyChain中发现重复项，我想更新密钥的值。这是我的代码：

let localAuthContext = LAContext.init()
localAuthContext.setCredential(password.data(using: String.Encoding.utf8)!, type: LACredentialType.applicationPassword)

var query: [String: Any] = [
             kSecClass as String: kSecClassGenericPassword,
             kSecAttrAccount as String: key,
             kSecAttrAccessControl as String: access,
             kSecUseAuthenticationContext as String: localAuthContext,
             kSecValueData as String: value.data(using: String.Encoding.utf8)!]

var newAttributes: [String: Any] = [kSecValueData as String: value.data(using: String.Encoding.utf8)!]

SecItemUpdate(query as CFDictionary, newAttributes as CFDictionary)

我收到-25293错误-errSecAuthFailed。

有输入吗？