Administering the Kerberos Server

Manual Administration Using kadmin

You cannot set this attribute using the command-line administrator.

Maximum Renew Time Attribute

The Maximum Renew Time attribute controls the renew time limit for renewable tickets. If you set the renew time longer than the renew time assigned to the krbtgt/REALM@REALM principal, the settings in the krbtgt/ principal take precedence.

You cannot set this attribute using the command-line administrator.

Key Type Attribute

The Key Type attribute generates a secret key. You must carefully decide which encryption type to use for the secret key.

Each principal can be associated with two different secret keys. These are called the primary and secondary keys. Each key is associated with an encryption type. The encryption type designates the encryption algorithm used to generate the secret key. Following are the supported encryption types:

DES3 (Security-Enhanced Triple Data Encryption Standard)

DES-MD5

DES-CRC

You cannot set this attribute using the command-line administrator.

Salt Type Attribute

A salt is a string of characters added to the beginning of a password before the password is transformed into a secret key. Salts strengthen passwords and ensure that principals with the same password do not have the same key. Salt settings apply only to user principals; service principals use a random key, and they do not require a designated salt (they use a salt type of None).

You can control the salt type attributes using the Password tab in the HP Kerberos Administrator Principal Information window.

You cannot set this attribute using the command-line administrator.

Chapter 8

223