iPhoneでFeliCaを読み取ってみた

iPhoneでFeliCaを読み取ってみた
#potatotips #64

作ったライブラリ
https://github.com/tattn/NFCReader

Transcript

1. iPhoneͰFeliCaΛಡΈऔͬͯΈͨ
   ాதୡ໵ (@tattn)
   #potatotips #64
   

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2. ాத ୡ໵ / ͨͳͨͭ (@tattn)
   • Yahoo!৐׵Ҋ಺
   • iOSΞϓϦΤϯδχΞ
   @tattn
   @tanakasan2525
   @tattn
   Copyright (C) 2019 Yahoo Japan Corporation. All Rights Reserved.
   

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3. iOS13ͰFeliCaͷ
   ಡΈॻ͖͕Մೳʹʂ
   (CoreNFC)
   

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4. SuicaͷσʔλΛྫʹ

   ಡΈࠐΈํΛ঺հ͠·͢
   (৐߱ཤྺ)
   

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5. FeliCaͷಡΈࠐΈखଓ͖ͷϑϩʔ
   IUUQTXXXTPOZDPKQ1SPEVDUTGFMJDBCVTJOFTTUFDITVQQPSUJOEFYIUNM
   begin()
   connect()
   requestService()
   readWithoutEncryption()
   λάͷϙʔϦϯά։࢝
   λάʹίϚϯυΛૹΕΔΑ͏ʹ઀ଓ
   αʔϏεͷଘࡏ֬ೝ (σʔλͷ༗ແ)
   αʔϏε಺ͷσʔλಡΈࠐΈ
   NFCTagReaderSession
   NFCFeliCaTag
   IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPODPSFOGD
   

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6. FeliCaͷಡΈࠐΈʹඞཁͳઃఆ
   • Info.plistʹPrivacyઃఆ/System CodeΛ௥Ճ
   • Capabilitiesʹ

   Near Field Communication Tag ReadingΛ௥Ճ
   Suicaͷ৔߹͸0003
   

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7. Sessionͷ࡞੒ & ϙʔϦϯάͷ։࢝
   let session = NFCTagReaderSession(
   pollingOption: NFCTagReaderSession.PollingOption.iso18092,
   delegate: self
   )
   session.alertMessage = "iPhoneΛSuicaʹ͚͍ۙͮͯͩ͘͞"
   session.begin()
   FeliCaΛಡΈࠐΉ࣌͸ISO18092Λࢦఆ
   /**
   * @enum NFCPollingOption
   *
   * @constant NFCPollingISO14443 Support both Type A & B modulation. NFCTagTypeISO7816Compatible and NFCTagTypeMiFare tags will be discovered.
   * @constant NFCPollingISO15693 NFCTagTypeISO15693 tag will be discovered.
   * @constant NFCPollingISO18092 NFCTagTypeFeliCa tag will be discovered.
   */
   public struct PollingOption : OptionSet {
   public init(rawValue: Int)
   public static var iso14443: NFCTagReaderSession.PollingOption { get }
   public static var iso15693: NFCTagReaderSession.PollingOption { get }
   public static var iso18092: NFCTagReaderSession.PollingOption { get }
   }
   

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8. Tag ͷಡΈࠐΈ४උ
   public func tagReaderSession(_ session: NFCTagReaderSession,
   didDetect tags: [NFCTag]) {
   guard case .feliCa(let tag) = tags.first else {
   return
   }
   session.connect(to: tag) { error in
   guard error == nil else { return }
   // TagͷಡΈࠐΈ (࣍ϖʔδ)
   }
   }
   delegateͰݕग़ͨ͠λάΛड͚औͬͯ

   ઀ଓ͢Δ
   public enum NFCTag {
   case feliCa(NFCFeliCaTag)
   case iso7816(NFCISO7816Tag)
   case iso15693(NFCISO15693Tag)
   case miFare(NFCMiFareTag)
   }
   

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9. ϒϩοΫσʔλͷಡΈࠐΈ
   let serviceCodeList = [Data([0x0f, 0x09])]
   let blockList = (0..feliCaTag.requestService(nodeCodeList: serviceCodeList) { nodes, error in
   guard error == nil, nodes.first == Data([0xff, 0xff]) else {
   return
   }
   feliCaTag.readWithoutEncryption(
   serviceCodeList: serviceCodeList,
   blockList: blockList) { status1, status2, dataList, error in
   guard error == nil, status1 == 0, status2 == 0 else {
   return
   }
   // dataͷಡΈࠐΈ (࣍ϖʔδ)
   }
   } Service code: αʔϏε(σʔλ)Λಛఆ͢Δίʔυ
   Block list: σʔλͷऔಘํ๏/ҐஔΛܾΊΔ
   

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10. Suicaͷσʔλͷσίʔυ
    for data in dataList {
    let year = data[4] >> 1
    let month = UInt16(bytes: data[4...5]) >> 5 & 0b1111
    let day = data[5] & 0b11111
    print("ར༻೔: \(year)/\(month)/\(day)") // 19/8/27
    let entrance = UInt16(bytes: data[6...7])
    let exit = UInt16(bytes: data[8...9])
    print("ೖ৔Ӻ: \(entrance), ग़৔Ӻ: \(exit)")
    let balance = UInt16(bytes: data[10...11].reversed())
    print("࢒ߴ: ", balance)
    }
    IUUQTXXXXEJDPSHX3"*-αΠόωن֨ *$Χʔυ
    
    year͕2000೥Λج४ʹ͍ͯ͠Δͷ͕໘ന͍
    

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11. όΠτ഑ྻΛIntܕʹม׵͢Δ֦ு
    extension FixedWidthInteger {
    init(bytes: UInt8...) {
    self.init(bytes: bytes)
    }
    init(bytes: T) {
    let count = bytes.count - 1
    self = bytes.enumerated().reduce(into: 0) { (result, item) in
    result += Self(item.element) << (8 * (count - item.offset))
    }
    }
    }
    XCTAssertEqual(UInt16(bytes: 0x35, 0x0B), 13579)
    XCTAssertEqual(Int(bytes: 0x07, 0x5B, 0xCD, 0x15), 123456789)
    

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12. ಡΈࠐΈɺͪΐͬͱ໘౗…
    

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13. FeliCaΛಡΈࠐΉϥΠϒϥϦΛ࡞Γ·ͨ͠
    https://github.com/tattn/NFCReader
    

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14. NFCReader - ࢖͍ํ
    let reader = Reader()
    reader.read(didBecomeActive: { _ in
    print("ಡΈࠐΈ։࢝")
    }, didDetect: { reader, result in
    switch result {
    case .success(let suica):
    let balance = suica.boardingHistories.first?.balance ?? 0
    reader.setMessage(balance)
    case .failure(let error):
    reader.setMessage("ಡΈࠐΈʹࣦഊ͠·ͨ͠")
    }
    }) ௒؆୯
    

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15. NFCReader - ࢖͍ํ
    Reader()
    Reader()
    Reader()
    Reader()
    Reader()
    Reader()
    ৭ʑରԠͯ͠Έ·ͨ͠
    ←Suica
    ←nanaco
    ←WAON
    ←্هͷશͯΛೝࣝ
    ←ࣗ࡞ͷλά
    ←Edy
    Pasmo, Kitaca, ICOCA, TOICAɺ
    manacaɺPiTaPaɺnimocaɺ
    SUGOCAɺ͸΍͔͚Μɺଞ
    ( )
    

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16. ·ͱΊɾײ૝
    • CoreNFCΛ࢖ͬͯFeliCa (Suica) ΛಡΈࠐΉํ๏ɺ

    ࡞ͬͨϥΠϒϥϦΛ঺հ
    • Suicaͷ࢒ߴྖҬ͸2bytes͔͠༻ҙ͞Εͯͳ͍ͷͰ

    ೖۚͰ͖Δ্ݶΛ؆୯ʹ͸૿΍ͤͳ͍ࣄ΋Θ͔ͬͨ
    • FeliCaͷ࢓༷͸Sony͕೔ຊޠͰ

    ஸೡʹॻ͍͍ͯΔͷͰͱͯ΋Θ͔Γ΍͔ͬͨ͢
    

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17. References
    • https://developer.apple.com/videos/play/wwdc2019/715
    • https://developer.apple.com/documentation/corenfc
    • https://www.sony.co.jp/Products/felica/business/tech-
    support/index.html
    • https://www.wdic.org/w/RAIL/αΠόωن֨%20(ICΧʔυ)
    • http://www014.upp.so-net.ne.jp/SFCardFan/
    • https://ja.osdn.net/projects/felicalib/wiki/FrontPage
    

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