Hello, I have to create an app in Swift that it scan NFC Identity card. It extract data and convert it to human readable data. I do it with below code
import CoreNFC
class NFCIdentityCardReader: NSObject , NFCTagReaderSessionDelegate {
func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) {
print("\(session.description)")
}
func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: any Error) {
print("NFC Error: \(error.localizedDescription)")
}
var session: NFCTagReaderSession?
func beginScanning() {
guard NFCTagReaderSession.readingAvailable else {
print("NFC is not supported on this device")
return
}
session = NFCTagReaderSession(pollingOption: .iso14443, delegate: self, queue: nil)
session?.alertMessage = "Hold your NFC identity card near the device."
session?.begin()
}
func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) {
guard let tag = tags.first else {
session.invalidate(errorMessage: "No tag detected")
return
}
session.connect(to: tag) { (error) in
if let error = error {
session.invalidate(errorMessage: "Connection error: \(error.localizedDescription)")
return
}
switch tag {
case .miFare(let miFareTag):
self.readMiFareTag(miFareTag, session: session)
case .iso7816(let iso7816Tag):
self.readISO7816Tag(iso7816Tag, session: session)
case .iso15693, .feliCa:
session.invalidate(errorMessage: "Unsupported tag type")
@unknown default:
session.invalidate(errorMessage: "Unknown tag type")
}
}
}
private func readMiFareTag(_ tag: NFCMiFareTag, session: NFCTagReaderSession) {
// Read from MiFare card, assuming it's formatted as an identity card
let command: [UInt8] = [0x30, 0x04] // Example: Read command for block 4
let requestData = Data(command)
tag.sendMiFareCommand(commandPacket: requestData) { (response, error) in
if let error = error {
session.invalidate(errorMessage: "Error reading MiFare: \(error.localizedDescription)")
return
}
let readableData = String(data: response, encoding: .utf8) ?? response.map { String(format: "%02X", $0) }.joined()
session.alertMessage = "ID Card Data: \(readableData)"
session.invalidate()
}
}
private func readISO7816Tag(_ tag: NFCISO7816Tag, session: NFCTagReaderSession) {
let selectAppCommand = NFCISO7816APDU(instructionClass: 0x00, instructionCode: 0xA4, p1Parameter: 0x04, p2Parameter: 0x00, data: Data([0xA0, 0x00, 0x00, 0x02, 0x47, 0x10, 0x01]), expectedResponseLength: -1)
tag.sendCommand(apdu: selectAppCommand) { (response, sw1, sw2, error) in
if let error = error {
session.invalidate(errorMessage: "Error reading ISO7816: \(error.localizedDescription)")
return
}
let readableData = response.map { String(format: "%02X", $0) }.joined()
session.alertMessage = "ID Card Data: \(readableData)"
session.invalidate()
}
}
}
But I got null. I think that these data are encrypted. How can I convert them to readable data without MRZ, is it possible ?
I need to get personal informations from Identity card via Core NFC.
Thanks in advance.
Best regards
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