man krb524_convert_creds_kdc_ccache (Fonctions bibliothèques) - krb524_convert_creds_kdc ,
NAME
LIBRARY
Kerberos 5 Library (libkrb5, -lkrb5)
SYNOPSIS
DESCRIPTION
Convert the Kerberos 5 credential to Kerberos 4 credential. This is done by sending them to the 524 service in the KDC.
krb524_convert_creds_kdc converts the Kerberos 5 credential in in_cred to Kerberos 4 credential that is stored in credentials .
krb524_convert_creds_kdc_ccache is diffrent from krb524_convert_creds_kdc in that way that if in_cred doesn't contain a DES session key, then a new one is fetched from the KDC and stored in the cred cache ccache , and then the KDC is queried to convert the credential.
This interfaces are used to make the migration to Kerberos 5 from Kerberos 4 easier. There are few services that still need Kerberos 4, and this is mainly for compatibility for those services. Some services, like AFS, really have Kerberos 5 supports, but still uses the 524 interface to make the migration easier.