app-starlock/star_lock/lib/blue/io_protocol/io_getPrivateKey.dart

import 'dart:convert';

import 'package:star_lock/blue/sm4Encipher/sm4.dart';

import '../io_tool/io_tool.dart';
import 'io_reply.dart';
import 'io_sender.dart';
import 'io_type.dart';

import 'package:crypto/crypto.dart' as crypto;

class GetPrivateKeyCommand extends SenderProtocol {
  String? lockID;
  String? keyID; // 钥匙ID
  String? authUserID; // 钥匙授权人ID
  int? nowTime;
  int? needAuthor;
  List<int>? publicKeyData;
  GetPrivateKeyCommand({
    this.lockID,
    this.keyID,
    this.authUserID,
    this.nowTime,
    this.needAuthor,
    this.publicKeyData
  }) : super(CommandType.getLockPrivateKey);

  @override
  List<int> messageDetail() {
    List<int> data = [];
    List<int> ebcData = [];
    // print("lockID：${lockID!} lockID.utf8.encode${utf8.encode(lockID!)}");

    // 指令类型
    int type = commandType!.typeValue;
    double typeDouble = type / 256;
    int type1 = typeDouble.toInt();
    int type2 = type % 256;
    data.add(type1);
    data.add(type2);
    // print("type:$type");
    // print("type1:$type1");
    // print("type2:$type2");

    // 锁id
    int lockIDLength = utf8.encode(lockID!).length;
    data.addAll(utf8.encode(lockID!));
    data = getFixedLengthList(data, 40 - lockIDLength);

    //KeyID  40
    int keyIDLength = utf8.encode(keyID!).length;
    data.addAll(utf8.encode(keyID!));
    data = getFixedLengthList(data, 40 - keyIDLength);

    //authUserID  40
    int authUserIDLength = utf8.encode(authUserID!).length;
    data.addAll(utf8.encode(authUserID!));
    data = getFixedLengthList(data, 20 - authUserIDLength);

    //NowTime  4
    // DateTime now = DateTime.now();
    // int timestamp = now.millisecondsSinceEpoch;
    var d1 = 0x11223344;
    data.add((d1 & 0xff000000) >> 24);
    data.add((d1 & 0xff0000) >> 16);
    data.add((d1 & 0xff00) >> 8);
    data.add((d1 & 0xff));

    if (needAuthor == 0) {
      data.add(0);
    } else {
      List<int> authCodeData = [];

      //KeyID
      authCodeData.addAll(utf8.encode(keyID!));

      //authUserID
      authCodeData.addAll(utf8.encode(authUserID!));

      //NowTime  4
      // DateTime now = DateTime.now();
      // int timestamp = now.millisecondsSinceEpoch;
      var d1 = 0x11223344;
      authCodeData.add((d1 & 0xff000000) >> 24);
      authCodeData.add((d1 & 0xff0000) >> 16);
      authCodeData.add((d1 & 0xff00) >> 8);
      authCodeData.add((d1 & 0xff));

      // String pubKey = "";
      // Storage.getData("bluePublicKey").then((res) => {
      //   pubKey = res
      // });
      // var pubKey = "ovOvAHuL5+dBCw7L3Qt7IQ==";
      // print("pubKey:$pubKey");
      // List<int> pubKeyData = base64.decode(pubKey.toString());
      // print("pubKeyData:$pubKeyData");
      authCodeData.addAll(publicKeyData!);

      // 把KeyID、authUserID、时间戳、公钥通过md5加密之后就是authCode
      var authCode = crypto.md5.convert(authCodeData);
      // print("authCodeData:$authCodeData \nauthCode:$authCode \nauthCodeBytes:${authCode.bytes}");

      data.add(authCode.bytes.length);
      data.addAll(authCode.bytes);
    }

    if ((data.length % 16) != 0) {
      int add = (16 - data.length % 16);
      for (int i = 0; i < add; i++) {
        data.add(0);
      }
    }
    print("SM4Data:$data");
    // 拿到数据之后通过LockId进行SM4 ECB加密 key:544d485f633335373034383064613864
    String key = SM4.createHexKey(key: 'TMH_c3570480da8d');
    ebcData = SM4.encrypt(data, key: key, mode: SM4CryptoMode.ECB);
    ebcData.removeRange(ebcData.length - 16, ebcData.length);
    // ebcData = utf8.encode(getSM4Str(data, "TMH_c3570480da8d"));
    print("ebcData:$ebcData");
    return ebcData;
  }
}

class GetPrivateKeyReply extends Reply {
  GetPrivateKeyReply.parseData(CommandType commandType, List<int> dataDetail)
      : super.parseData(commandType, dataDetail) {
    var getData = dataDetail.sublist(2);
    // print("getData:$getData");
    switch(getData[0]){
      case 0x00:
        //成功
        print('获取私钥成功');
        getData.removeAt(0);
        List commKey = getData.sublist(0, 16);
        List signKey = getData.sublist(16);
        print("commKey:$commKey  signKey:$signKey");
        break;
      case 0x07:
        //无权限
        print('获取私钥无权限');

        break;
      case 0x0f:
        //用户已存在
        print('获取私钥：用户已存在');

        break;
      default:
        //失败
        print('获取私钥失败');

        break;
    }
  }
}