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# PicoKeys: YubiKey 的开源平替
!!! danger "重要提醒"
近期原作者[对固件代码增加了防回滚等功能](https://linux.do/t/topic/1469991),并且[将Pico Commissioner转入闭源](https://github.com/polhenarejos/pico-fido/issues/216),导致社区产生对原作者行为合理性的[质疑](https://github.com/polhenarejos/pico-fido/issues/245)。有鉴于此,社区已经产生基于原项目的[完全开源分支](https://github.com/librekeys/),但是该分支仍处于不稳定状态,分支的整体结构、更新方向和兼容性问题尚未有明确定论。**无论选择哪个固件,我强烈建议不要将刷入该固件的硬件密钥作为你保存 TOTP 和 Webauthn 密钥的唯一途径,并且妥善保管网站提供的恢复代码。**
[Pico Keys](https://www.picokeys.com/)
## 材料
- [微雪 RP2350-One](https://www.waveshare.net/wiki/RP2350-One)
建议使用官方附赠贴纸粘贴在背面Logo处以紧固USB接口
## 安装
[Getting Started - Pico Keys](https://www.picokeys.com/getting-started/)
Pico Fido
Raspberry
Pico 2
For Raspberry Pico, put the Pico device into recovery mode:
- Unplug the device
- While pressing the BOOTSEL button, plug the device to the USB port
- A mounted flash unit will appear in the File Explorer / Finder named RP2350 (for RP2350 boards)
- Copy the .uf2 file download previously and copy to the mounted unit
- The device will unmount the flash unit and will be remounted as a Pico Key. The led light will blink periodically
## 初始化
++windows+i++ 账户 登录选项 安全密钥 管理
插入 Picokey
添加安全密钥 PIN
## 配置
[picoforge](https://github.com/librekeys/picoforge)
以管理员身份运行
Configuration
- Identify
- Vendor Preset `Yubikey 5`
- Product Name `Yubico YubiKey`
- LED Setting
- LED GPIO Pin `16`
- LED Driver `WS2812`
- Brightness `5`
- LED Dimmable `Switch ON`
- Touch Timing
- Touch Timeouts `15`
- Device Options
- Power Cycle on Reset `Switch ON`
Apply Changes
按下开发板上的"Reset"
## 使用
[Yubico Authenticator App for Desktop and Mobile | Yubico](https://www.yubico.com/products/yubico-authenticator/)
添加 TOTP
管理 通行密钥
- 蓝灯: 设备待机
- 红灯: 设备处理中
- 绿灯: 需要用户按 `BOOT` 键以授权
``` bash
ssh-keygen -t ed25519-sk -O resident -O verify-required -O application=ssh:custom_name -O user=my_username
```
https://zhuanlan.zhihu.com/p/691575345
## 其他
如何正确地擦除并刷写新固件?
在进行任何操作前,你需要先让 ESP32-S3 进入下载模式Download Mode / DFU
按住板子上的 BOOT或 0按钮不放。
单击一下 RESET或 EN / RST按钮。
松开 BOOT 按钮。
(此时电脑会重新识别到一个串口设备)
接下来,根据你使用的刷写工具,选择对应的擦除方式:
方法一:使用命令行工具 esptool.py最推荐、最彻底
如果你熟悉命令行,使用乐鑫官方的 esptool 是最稳妥的。在终端中执行以下命令彻底清空闪存:
``` powershell
esptool.py --chip esp32s3 --port COM3 erase_flash
```
显示 Flash memory erased successfully 后,你就可以像对待一块全新的 ESP32-S3 一样,用常规方法刷写任何其他固件了。