I've renamed this project page to: http://k5wiki.kerberos.org/wiki/Projects/APIs_for_keytab_and_cccol_content and extended it to include another API named krb5_cccol_have_content(). My intent is to use it to fix issue #7160, which is that gss_acquire_cred for initiator creds with the krb5 mechanism should fail immediately if no krb5 credentials at all are available.