About the trust status of certificates and PGP keys
When you view the details for a certificate or key, you can view the trust status of the item. Depending on your administrator, you can change the trust status of a certificate or PGP key.
A certificate can be explicitly trusted (the certificate itself is trusted), implicitly trusted (the root certificate in the certificate chain is trusted on your BlackBerry smartphone) or not trusted (the certificate isn't explicitly trusted and the root certificate in the certificate chain isn't trusted or doesn't exist on your smartphone).
A PGP key can be explicitly trusted (the PGP key itself is trusted), implicitly trusted (the PGP key is associated with a private key on your smartphone) or not trusted (the PGP key isn't explicitly trusted and isn't associated with a trusted PGP key on your smartphone and a chain of digital signatures to a trusted key doesn't exist).