krb5_principal_intro − The principal handing functions. A Kerberos principal is a email address looking string that contains two parts separated by . The second part is the kerberos realm the principal belongs to and the first is a list of 0 or more components. For example
[email protected]
host/[email protected]
host/[email protected]
See the library functions here: Heimdal Kerberos 5 principal functions