Hello, pardon me if I'm being dumb here, but I'm new to Arch Linux and the pacman program....
I've managed to install the "ArchLinuxARM-rpi-3-latest.tar.gz" system on a Raspberry Pi model 3, and upgraded successfully with "pacman -Syu", but when I try to install other packages, many (all?) of them throw an error about "corrupted package or invalid PGP signature". Here's an example:
$this->bbcode_second_pass_quote('', '
')[root@alarm alarm]# pacman -S vim
resolving dependencies...
looking for conflicting packages...
Packages (3) gpm-1.20.7-8 vim-runtime-8.1.0022-1 vim-8.1.0022-1
Total Download Size: 6.81 MiB
Total Installed Size: 31.90 MiB
:: Proceed with installation? [Y/n] y
:: Retrieving packages...
gpm-1.20.7-8-aarch64 128.1 KiB 156K/s 00:01 [############################] 100%
vim-runtime-8.1.0022-1... 5.4 MiB 153K/s 00:36 [############################] 100%
vim-8.1.0022-1-aarch64 1317.7 KiB 149K/s 00:09 [############################] 100%
(3/3) checking keys in keyring [############################] 100%
(3/3) checking package integrity [############################] 100%
error: vim-runtime: signature from "Arch Linux ARM Build System <builder@archlinuxarm.org>" is unknown trust
:: File /var/cache/pacman/pkg/vim-runtime-8.1.0022-1-aarch64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: gpm: signature from "Arch Linux ARM Build System <builder@archlinuxarm.org>" is unknown trust
:: File /var/cache/pacman/pkg/gpm-1.20.7-8-aarch64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: vim: signature from "Arch Linux ARM Build System <builder@archlinuxarm.org>" is unknown trust
:: File /var/cache/pacman/pkg/vim-8.1.0022-1-aarch64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: failed to commit transaction (invalid or corrupted package (PGP signature))
Errors occurred, no packages were upgraded.