华为ePay接入总结用ContentObserver获取验证码

最新推荐文章于 2024-04-23 13:07:14 发布

原创最新推荐文章于 2024-04-23 13:07:14 发布 · 439 阅读

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文章标签：

#验证码 #短信

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这篇博客介绍了华为ePay的接入过程，重点关注了收发报文中的HmacSHA256验证以及如何通过ContentObserver获取短信验证码，实现了安全的支付流程。

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这次接入主要由收发报文和读取短信构成，收发报文中包含了HmacSHA256的验证

简单粘贴一下用到的代码

读取短信

HuaweiSdkHandler handler = new HuaweiSdkHandler(callback,context,number);
smsObsever = new SmsObsever(context,handler,smsNumber);
context.getContentResolver().registerContentObserver(SMS_INBOX,true,smsObsever);

class SmsObsever extends ContentObserver {
    private Context context;
    private String number = "+27820097640";
    private Handler handler;
    private boolean wasCalled = false;
    private Uri SMS_INBOX = Uri.parse("content://sms/");
    public void getSmsFromPhone() {
        ContentResolver cr =context.getContentResolver();
        String[] projection = new String[] { "body", "address" };//"_id", "address", "person",, "date", "type
        String where = "date >  " + (System.currentTimeMillis() - 2 * 1000);;
        Cursor cur = cr.query(SMS_INBOX, projection, where, null, "date desc");
        if (null == cur) {
            return;
        }
        if (cur.moveToNext()) {
            String body = cur.getString(cur.getColumnIndex("body"));
            //这里我是要获取自己短信服务号码中的验证码~~
            Pattern pattern = Pattern.compile("[0-9]{6}");
            Matcher matcher = pattern.matcher(body);
            if (matcher.find()) {
                //存储号码  处理回调
                Message message = new Message();
                Bundle bundle = new Bundle();
                bundle.putString("valid",matcher.group(0));
                message.setData(bundle);
                handler.handleMessage(message);
            }
        }
    }
    public SmsObsever(Context context,Handler mhandler,String smsNumber) {
        super(mhandler);
        number = smsNumber;
        handler=mhandler;
        this.context=context;
    }
    @Override
    public void onChange(boolean selfChange) {
        super.onChange(selfChange);
        //提取验证码
        if(context==null||number==null)
            return;
        getSmsFromPhone();
    }
}

获取校验码

private String getSignture(String Body)
{
    String packetBody = Body;
    String key = appKey+"&"+appSecrect+"&"+requestID;
    try {
        SecretKeySpec signKey = new SecretKeySpec(key.getBytes(),"HmacSHA256");
        Mac mac = Mac.getInstance("HmacSHA256");
        mac.init(signKey);
        return "\""+ Base64.encodeToString(mac.doFinal(packetBody.getBytes()),0).trim()+"\"";
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }
    return null;
}