Kerberos版本4和Kerberos版本5之间的区别

1. Kerberos版本4：
Kerberos版本4是作为计算机网络身份验证系统的Kerberos软件的更新。 Kerberos版本4是基于Web的身份验证软件，用于通过DES技术登录系统以进行加密时对用户信息进行身份验证。它于1980年代后期推出。

2. Kerberos版本5：
Kerberos版本5是Kerberos软件之后的Kerberos版本4的更高版本，该版本是为增强身份验证的安全性而开发的。 Kerberos版本5在网络中提供了单一的身份验证服务，该服务分布在整个企业中。它于1993年推出。

Kerberos版本4和Kerberos版本5之间的区别：

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.