[Spacewalk-list] using api to determine package signing key

[Maria]

Hi,

I have written an api script to look for packages in channels where they do not belong, using various different tests. One thing that would be useful would be to compare the channel gpg key with the key used to sign the package. However, I can't see how to use the api to get the information of what key was used to sign a package.  Can someone point me in the right direction for that?

Thanks,
Maria