GPG 错误：https://github.armbian.com/configng stable InRelease: 由于没有公钥，无法验证下列签名： NO_PUBKEY 93D6889F9F0E78D5

u盘安装Armbian_25.08.0_amlogic_s905l3-cm211_bookworm_6.12.31_server_2025.06.01后，执行命令：apt update && apt upgrade -y 时，错误提示如下，

 / _ \| '_| '  \| '_ \ / _` | ' \  | (_) \__ \
 /_/ \_\_| |_|_|_|_.__/_\__,_|_||_|  \___/|___/

 v25.08.0 for Aml.S905l3 running Armbian Linux 6.12.31-ophub
armbian:~:# apt update && apt upgrade -y
命中:1 http://deb.debian.org/debian bookworm InRelease
命中:2 http://deb.debian.org/debian bookworm-updates InRelease
命中:3 http://deb.debian.org/debian bookworm-backports InRelease
命中:4 http://security.debian.org bookworm-security InRelease
获取:6 https://github.armbian.com/configng stable InRelease [3,992 B]
错误:6 https://github.armbian.com/configng stable InRelease
  由于没有公钥，无法验证下列签名： NO_PUBKEY 93D6889F9F0E78D5
命中:5 https://es.sbcmirror.org/apt bookworm InRelease
正在读取软件包列表... 完成
W: GPG 错误：https://github.armbian.com/configng stable InRelease: 由于没有公钥，无法验证下列签名： NO_PUBKEY 93D6889F9F0E78D5
E: 仓库 “https://github.armbian.com/configng stable InRelease” 没有数字签名。
N: 无法安全地用该源进行更新，所以默认禁用该源。
N: 参见 apt-secure(8) 手册以了解仓库创建和用户配置方面的细节。

解决办法：

• 看路径/usr/share/keyrings/下是否有armbian.gpg这个文件

• 看路径/etc/apt/trusted.gpg.d/ 下是否有armbian.gpg这个文件

• 如果以上2个路径上都没有armbian.gpg这个文件的话，在终端执行：

  curl 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xdf00faf1c577104b50bf1d0093d6889f9f0e78d5' |gpg --dearmor| sudo tee /etc/apt/trusted.gpg.d/armbian.gpg

  如下：

  
  armbian:~:# curl 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xdf00faf1c577104b50bf1d0093d6889f9f0e78d5' |gpg --dearmor| sudo tee /etc/apt/trusted.gpg.d/armbian.gpg
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
  100  6315    0  6315    0     0   7015      0 --:--:-- --:--:-- --:--:--  7016
  ▒▒MU▒Ɩdžgc▒▒^▒▒g▒`q▒x)▒gNK▒hV▒▒*Ӱ▒2;▒▒G O▒▒(F>$%u"V=▒7N)u▒J▒G▒▒)▒▒▒K▒^%m▒▒XF▒w▒▒;Ү▒▒▒U▒▒W▒y▒▒.▒▒?▒^A=▒#[▒
  # ...........省略了
  olorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256color#                                                 armbian:~:# xterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256color # 直接回车
  zsh: 文件名过长: xterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256colorxterm-256color 
  armbian:~:#
  
  

• 这样就会在路径 /etc/apt/trusted.gpg.d/ 下生成armbian.gpg这个文件

• 打开armbian-config.sources查看出错源

  Types: deb
  URIs: https://github.armbian.com/configng
  Suites: stable
  Components: main
  Signed-By: /usr/share/keyrings/armbian.gpg  # 把上面得到的那个文件放到这个路径下
  

• 把上面生成的armbian.gpg这个文件放到 /usr/share/keyrings/这个路径下

• 执行 apt update && apt upgrade -y

参考：

GPG error: The following signatures couldn‘t be verified, NO_PUBKEY 93D6889F9F0E78D5-CSDN博客

解决armbian更新报不能验证个别公钥 – wentao's blog

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