安装包图标

BluePass

BluePass extracts 2FA tokens from SMS and forwards them via Bluetooth
新版本 0.3.0
- Add a button to send the last code again to the companion app
- Add a test button to allow to trigger sending a code to the companion app
- Fix the format of the summary
Description

BluePass extracts two factor authentication codes (2FA) from SMS and sends them to a paired device via Bluetooth RFCOMM. A Qt based companion app bluepass-server will receive the 2FA codes and provide them via the system clipboard.


Use Case

The company I work for is relying on third party services that require to authenticate using 2FA. The second factor is an SMS to your mobile phone. This app was built for convenience, to avoid having to unlock your phone, find the message and then type the received code on the PC.

It is not about the time saved, it's about getting rid of robot tasks.


Setup

You have to configure parameters to match the sender of the SMS and parse the code from the messages sent to you. Currently, regular expressions are used for this task. However, a very basic setup will be provided below.

Regular expression for sender has to be set to a regular expression that matches all the senders of SMS (as they appear in your chat application). Multiple numbers and names can be provided:

  • To match CompanyA, you might simply putCompanyA into the box

  • To match CompanyA and 12345678, write (CompanyA|12345678)



Regular expression to filter the content has to be set to a regular expression that matches the messages you want to catch. Additionally, it has to define one group to extract the actual code that has to be sent to the PC.

  • To match any number, you can use [^\d]*(\d+).*

  • To match a code only with 6 digits, use: .*(\d{6}).*



... as the process of defining a proper regular expression is not that easy, there is another text box Test message. You can paste here the content of the SMS thatyou want to match and adjust the regular expression until it gets parsed correctly.

The last step of the configuration is to pair with the bluetooth adapter of your PC and configure the adapter to be used.


Operation


  • Whenever your mobile phone receives an SMS (and the settings above are configured), this app will try to match the sender and content. If one of the two doesn't match, the message will not be processed any further.

  • If the 2FA code could be extracted, a foreground service will be started (status bar) and the app tries to connect to the configured Bluetooth adapter and sends the code. It retries for some amount of time and reports the status in the status bar. Note: The notification in the status bar doesn't automatically disappear. However, this doesn't consume any resources and can be removed using the Stop button.

  • If the code is required on the mobile phone, it can be copied using the Copy last button.




Protocol

The communication is based on very simple primitives using an RFCOMM channel. The UUID for the service is e4d56fb3-b86d-4572-9b0d-44d483eb1eee. Extracted codes are sent as text (over a secure Bluetooth connection) terminated with a new line character. Therefore, codes may not contain any new line characters.


Future


  • The protocol will be changed to something more sophisticated and extensible

  • Configuration of the sender should be done through contact providers and not use regular expressions

  • Allow to use this app to share text / files with the PC


版本

尽管下面提供了 APK 安装包的下载选项,但你应该注意,以这种方式安装将不会收到更新通知,这是一种不太安全的下载方式。 我们建议你安装使用 F-Droid 客户端。

下载 F-Droid
  • 版本 0.3.0 (5) 推荐 更新于 2021-12-02

    该版本需要 Android 10 及以上版本。

    此安装包由 F-Droid 构建并签名,且保证与此源代码 tarball 保持一致。

    权限
    • 运行前台服务
      允许此应用使用前台服务。
    • 接收讯息(短信)
      允许此应用接收和处理短信。这意味着,应用可以不经确认监视发送到设备的短信,或删除发送到设备的短信。
    • 与蓝牙设备配对
      允许此应用查看手机的蓝牙配置,并建立及接受与配对设备的连接。
    • 访问蓝牙设置
      允许此应用配置本地蓝牙手机,并允许其查找远程设备且与之配对。
    • 连接到配对的蓝牙设备
      允许该应用连接到配对的蓝牙设备
    • 发现并配对附近的蓝牙设备
      允许该应用发现附近的蓝牙设备并与其配对
    • 只能在前台获取精确的位置信息
      此应用可以在使用时从定位服务获取你的精确位置。必须打开你的设备的定位服务,应用才能获取位置。这可能会增加耗电量。
    • 只有在前台运行时才能获取大致位置信息
      此应用可以在使用时从定位服务获取你的大致位置。必须打开你的设备的定位服务,应用才能获取位置。
    • 防止手机休眠
      允许此应用阻止手机进入休眠状态。

    下载 APK 14 MiB PGP 签名 | 构建日志

  • 版本 0.2.1 (4) - 更新于 2021-11-02

    该版本需要 Android 10 及以上版本。

    此安装包由 F-Droid 构建并签名,且保证与此源代码 tarball 保持一致。

    权限
    • 运行前台服务
      允许此应用使用前台服务。
    • 接收讯息(短信)
      允许此应用接收和处理短信。这意味着,应用可以不经确认监视发送到设备的短信,或删除发送到设备的短信。
    • 与蓝牙设备配对
      允许此应用查看手机的蓝牙配置,并建立及接受与配对设备的连接。
    • 访问蓝牙设置
      允许此应用配置本地蓝牙手机,并允许其查找远程设备且与之配对。
    • 连接到配对的蓝牙设备
      允许该应用连接到配对的蓝牙设备
    • 发现并配对附近的蓝牙设备
      允许该应用发现附近的蓝牙设备并与其配对
    • 只能在前台获取精确的位置信息
      此应用可以在使用时从定位服务获取你的精确位置。必须打开你的设备的定位服务,应用才能获取位置。这可能会增加耗电量。
    • 只有在前台运行时才能获取大致位置信息
      此应用可以在使用时从定位服务获取你的大致位置。必须打开你的设备的定位服务,应用才能获取位置。
    • 防止手机休眠
      允许此应用阻止手机进入休眠状态。

    下载 APK 14 MiB PGP 签名 | 构建日志