1import CryptoKit2import LocalAuthentication3
4internal func createSigningPrivkey(accountName: String) throws {5    var accessError: SecurityError?6    let accessControl = SecAccessControlCreateWithFlags(7        kCFAllocatorDefault,8        kSecAttrAccessibleWhenUnlockedThisDeviceOnly,9        [.privateKeyUsage, .userPresence],10        &accessError11    )!12
13    if let error = accessError {14        throw error.takeRetainedValue() as Error15    }16    17    let signingPrivkey = try SecureEnclave.P256.Signing.PrivateKey(accessControl: accessControl)18    try self.store.storeKey(signingPrivkey, account: accountName, requireUserPresence: false)19}