1. Kerberos Version 4 :
Kerberos version 4 is an update of the Kerberos software that is a computer-network authentication system. Kerberos version 4 is a web-based authentication software which is used for authentication of users information while logging into the system by DES technique for encryption. It was launched in late 1980s.
2. Kerberos Version 5 :
Kerberos version 5 is a later version of the Kerberos software came after Kerberos version 4, developed for enhancing security in the authentication. Kerberos version 5 provides a single authentication service in a network which is distributed over an enterprise. It was launched in the year 1993.
Difference between Kerberos Version 4 and Kerberos Version 5 :
|S.No.||Kerberos Version 4||Kerberos Version 5|
|1.||Kerberos version 4 was launched in late 1980s.||Kerberos version 5 was launched in 1993.|
|2.||It provides ticket support.||It provides ticket support with extra facilities for forwarding, renewing and postdating tickets.|
|3.||Kerberos version 4 works on the Receiver-makes-Right encoding system.||Kerberos version 5 works on the ASN.1 encoding system.|
|4.||It does not support transitive cross-realm authentication.||It supports transitive cross-realm authentication.|
|5.||It uses Data Encryption Standard technique for encryption.||It uses any encryption techniques as the cipher text is tagged with an encryption identifier.|
|6.||In Kerberos version 4, the ticket lifetime has to be specified in units for a lifetime of 5 minutes.||In Kerberos version 5, the ticket lifetime is specified with the freedom of arbitrary time.|
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