[Assist] Bad signature for package gnucash and/or a dependency; how to correct?

[David Hunt]

I tried to install this and found that there is a bad signature for the 
package or one of its dependencies.  How would I either correct the 
signature, or force the installation, assuming the package is, in fact, 
correctly built?  Maybe I should build it from sources?  The offending 
line from the output of pacman is below.



Thanks,



David



(17/17) checking package integrity                 
[######################] 100%
error: libdbi: signature from "Thorsten Töpper 
<atsutane at freethoughts.de>" is unknown trust
:: File /var/cache/pacman/pkg/libdbi-0.9.0-2-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)
Errors occurred, no packages were upgraded.
[dhunt at toshiba ~]$