What is meet-in-the-middle attack
Explain what is meet-in-the-middle attack?
Expert
Meet-in-the-middle attack was first explained in [DIFF77]. It is based upon the observation which says, if we have C=Ek2 [Ek1 [P]]
Then
X=Ek1 [P] =Dk2[C]
Provided a known pair, (P, C), attack proceeds as follows. First, encrypt P for all the 256 possible values of K1. Store these results within a table and then sort table through the values of X. Next, decrypt the C using all the 256 possible values of K2. Since every decryption is generated, check result against the table for the match. If a match happens, then test the two resulting keys against the new known plaintext-cipher text pair. If two keys generate the correct cipher text, accept them as correct keys.
Suppose you worked for a US- based company that wanted to develop its own MIB for managing a product line. Where in the object identifier tree would it be registered? ( Hint: You’ll have to do some digging through RFCs or other documents to answer this question.)
Define the term Threat Statement and what are their consequences?
What is Security in networks? Explain.
Specify key size for the Blowfish?
Illustrate the differences between the MAC and Hash function?
WEP (wired equivalent privacy): Wired equivalent privacy is capable of providing the same level of privacy as it is there in the wired network. The WEP makes use of a static key which both the access points and the clients know. The static key helps i
Define: a) Mono-alphabetic cipher b) Playfair cipher c) Transposition cipher
List the protocols which are used to provide the IP security? Explain the IP security services?
Explain the term Security Requirements and Attacks in network security.
Specify the number of keys required for the two people to communicate through a cipher?
18,76,764
1946420 Asked
3,689
Active Tutors
1430701
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!