如何修复 apt update EXPKEYSIG 1F3045A5DF7587C3

问题：

运行 sudo apt update 时你看到以下错误消息：

apt_expkeysig_josm.txt

Err:19 https://josm.openstreetmap.de/apt focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 130A439C78FC0F87
Reading package lists... Done
W: GPG error: https://josm.openstreetmap.de/apt focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 130A439C78FC0F87

Err:19 https://josm.openstreetmap.de/apt focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 130A439C78FC0F87
Reading package lists... Done
W: GPG error: https://josm.openstreetmap.de/apt focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 130A439C78FC0F87

解决方案

使用以下命令添加 JOSM 密钥

add_josm_key.sh

wget -q https://josm.openstreetmap.de/josm-apt.key -O- | sudo apt-key add -

wget -q https://josm.openstreetmap.de/josm-apt.key -O- | sudo apt-key add -

之后，错误应该已修复，你可以运行

apt_update.sh

sudo apt update

sudo apt update

再次。

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