package signature fail

gistfile1.txt

[root@ip-10-30-136-122 ~]# sudo pacman -Sy curl
:: Synchronizing package databases...
 ec2 is up to date
 core is up to date
 extra is up to date
 community is up to date
 multilib is up to date
warning: curl-7.32.0-2 is up to date -- reinstalling
resolving dependencies...
looking for inter-conflicts...

Packages (1): curl-7.32.0-2

Total Installed Size:   1.73 MiB
Net Upgrade Size:       0.00 MiB

:: Proceed with installation? [Y/n] y
(1/1) checking keys in keyring                                                                          [##############################################################] 100%
(1/1) checking package integrity                                                                        [##############################################################] 100%
error: curl: signature from "Dave Reisner <d@falconindy.com>" is unknown trust
:: File /var/cache/pacman/pkg/curl-7.32.0-2-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: failed to commit transaction (invalid or corrupted package (PGP signature))
Errors occurred, no packages were upgraded