$ sudo pacman -S archlinux-keyring manjaro-keyring
[sudo] password for man:
warning: archlinux-keyring-20160402-1 is up to date -- reinstalling
warning: manjaro-keyring-20160527-1 is up to date -- reinstalling
resolving dependencies...
looking for conflicting packages...
Packages (2) archlinux-keyring-20160402-1 manjaro-keyring-20160527-1
Total Download Size: 0.62 MiB
Total Installed Size: 0.86 MiB
Net Upgrade Size: 0.00 MiB
:: Proceed with installation? [Y/n]
:: Retrieving packages...
archlinux-keyring-2... 576.7 KiB 131K/s 00:04 [######################] 100%
manjaro-keyring-201... 59.0 KiB 109K/s 00:01 [######################] 100%
(2/2) checking keys in keyring [######################] 100%
(2/2) checking package integrity [######################] 100%
error: archlinux-keyring: signature from "Pierre Schmitz <
[email protected]>" is unknown trust
:: File /var/cache/pacman/pkg/archlinux-keyring-20160402-1-any.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: manjaro-keyring: signature from "Philip Müller (Called Little) <
[email protected]>" is unknown trust
:: File /var/cache/pacman/pkg/manjaro-keyring-20160527-1-any.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.