[arch-general] Unknown Trust and Corrupted Package

Hi, I'm receiving message about unknown trust while trying to install the confuse package. $ sudo pacman -S confuse resolving dependencies... looking for conflicting packages... Packages (1) confuse-2.8-1 Total Download Size: 0.03 MiB Total Installed Size: 0.11 MiB :: Proceed with installation? [Y/n] y :: Retrieving packages ... confuse-2.8-1-x86_64 33.8 KiB 4.72M/s 00:00 [######################] 100% (1/1) checking keys in keyring [######################] 100% (1/1) checking package integrity [######################] 100% error: confuse: signature from "Thorsten Töpper " is unknown trust :: File /var/cache/pacman/pkg/confuse-2.8-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] y error: failed to commit transaction (invalid or corrupted package (PGP signature)) Errors occurred, no packages were upgraded. -- Jayesh Badwaik