For More Question Papers Visit - www.pediawikiblog.com

1,4SCS252

USN

Second Semester M.Tech. Degree Examinationo .Iuune/July

2CI

16

g. co m

Infornnation and Network $ecurity Time: 3 hrs.

Max. Marks:

lGO

Note: Amswer nny F'IYE.fitll questions. o.)

o o

ia.

;

b.

Explain the Feistal Cipher structure. Also explain the various parameter and design choices (tr2 Nlarks) which determine the actual algorithm of Feistal Cipher. (08 Marks) Explain the Avalanche effect.

o

a. b.

Explain with an example the Elgamal cryptosystem. Perform encryption and decryptiolr using the RSA algorithm for

q) :i

169

coo .= c\ 6d -t

gdi 00)a e(J

0()2

a. b.

Explain the following: i) Caesar cipher ii) Vernam cipher. Explain Diffie-Hellman key exchange.

a. b.

Explain with neat diagram the generai format of X.509 certificate. Brietly explain fbur general categories of scheme for distribution of public

5a. b.

ch=

ik

ll

(-

0s

a. b.

'oCd

3c) OE a4(') r^, gi-

a. b. c.

TE

oj.= 5/a

.\)

rr6

6.v =o0 ()=

::.

keys.

a. b.

sr

(05 &Earks) (10 l4arks)

What is S/MIME? Write the functions of S/MIME. Explain application of lPsec. Explain with a neat diagram encapsulating security payload

{05 $z[arks]

format.

Write the differences between version 4 and version 5 of Kerberos. Describe the function flow of domain keys identified mall.

*****

w

=o) ()

\r< _

(08 Marks) (12 Manks)

Explain in detail the IEEE 802.1 1 WLAN. (10 Marks) Briefly explain architecture and record protocol operations of secure sockets layer. (10 Marks)

w

oo-

(10 Marks)

w

6:

.p ed

o

>q .G'

(10 Marks)

Explain packet exchanges and packet fonnation of secure shell transport layer protocol.

cg

ss=

- 7 and

Differentiate betu,een conventional encryption and public key encryption. (05 Marks) List and briefly define types of cryptanalytic attacks based on what is knor,vn to the attacker.

O()

do

e

(88 Marks)

w

-oo

I::3, Q: li,

ia

6(J

;(n

:5.

ib

M

oC-

(tr2 Marks)

lo

li

c.t

c.)

o

z tr !.

o

cE

For More Question Papers Visit - www.pediawikiblog.com

(S5 Marks) (tr0 Marks)

(I0 Marks) (10 lvxarks)