1In a simple authentication dialogue of Kerberos version 4 w

1.In a simple authentication dialogue of Kerberos version 4, why should a network address of client C be included in the ticket?

2. (Select all correct answers) Kerbros security technology has the feature(s), a.Kerberos server stores all user’s passwords. b.Kerberos server provides a centralized authentication service to users. c.Kerberos server uses conventional encryption security approach d.Kerberos server uses public-key encryption security approach

3. In X.509, the notation .X2<3>> X3<4>> means: X2 certifies X3 and X3 certifies X4 X3 certifies X2 and X4 certifies X3 certificate of X2 is issued by X3 and certificate of X3 is issued by X4 certificate of X3 is issued by X2 and certificate of X3 is issued by X4

4. In X.509 certificate, the content in the field Subject Name is the name of the certificate authority (CA) the name of the user the identifier of the certificate authority (CA) the identifier of the user

Solution

1)addr in ticket describes about network address to find the destination location.
2) a, b, c
3)option 4
4)An X.509 certificate includes:

Version – which X.509 version applies to certificate
Serial number – the identity must assign it a serial number to distinguishes it from other certificates
Algorithm information – the algorithm used by the issuer to sign the certificate .
Issuer distinguished name – the name of the entity issuing the certificate
Validity period of the certificate – start/end date and time
Subject distinguished name – the name of the identity the certificate is issued to
Subject public key information – the public key associated with the identity
Extensions (optional)