Below are the steps to DFS Algorithm with advantages and disadvantages: Step1: Node 1 is visited and added to the sequence as well as the spanning tree. Data Encryption Standard is a symmetric-key algorithm for the encrypting the data. [8] b) Briefly explain Deffie Hellman key exchange with an example. what is the difference between an algorithm and pseudocode? A good example is Bitcoin’s Secure Hashing Algorithm 256 (commonly shortened to SHA-256). (c) Éxplain why modern block ciphers are designed as substitution cipher instead of transposition ciphers. The answer to the question determines which arrow you follow out of the decision shape. Explain various security services with an examples. Cryptographic hash functions are a third type of cryptographic algorithm. (a) Explain Why It Is Essential For A Digital Signature Scheme Such As RSA To Work Together With A Secure Hash Function Such As SHA. Describe digital signature algorithm and show how signing and verification is done using DSS. [5] (b) Draw A Diagram To Show How To Apply RSA To Create A Digital Signature And How To Verify The Signature (no RSA Algorithm … EP (DP) represents public encryption (decryption) and the algorithm used can be RSA or DSS (recall that the DSS can only be used for the digital signature function and unlike RSA cannot be used for encryption or key exchange). Explain the encryption operation used inRC5 algorithm c. Explain the working of IDEA algorithm d. Write a note on Blowfish. Cipher An algorithm for transforming an intelligible message into one that is unintelligible by transposition and/or substitution methods Key Some critical information used by the cipher, known only to the sender& receiver Encipher (encode) The process of … Remember BTL-1 3 Explain the processof deriving eighty 64-bit words from 1024 bits for processingOf a single blocksand also discuss single round function in SHA-512 algorithm. An algorithm is like a predetermined pattern to be followed for a predetermined result. Unit-VI 1. please explain with examples. Assume adjacency list representation. AES algorithm can support any combination of data (128 bits) and key length of 128, 192, and 256 bits. b. Evaluate BTL-5 4 The hash function used is SHA-1 which creates a 160 bit message digest. a) With neat diagram explain Message Digest generation using SHA-512. pad message so its length is a multiple of 512 bits Intuitive Answer HMAC is a code that allows the recipient to verify both the data integrity and the authentication of the message. AES is an important algorithm and was orig-inally meant to replace DES (and its more secure variant triple DES) as the standard algorithm for non-classifiedmaterial. Two common hashing algorithms are the Message Digest 5 Algorithm (MD5) and Secure Hash Algorithm-1 (SHA1). It comes under block cipher algorithm which follows Feistel structure. Explain the procedure involved in SHA-1 algorithm. Has no cycles Explain with example the Diffie-Hellman Fig1: DES Algorithm Block Diagram [Image Source: Cryptography and Network Security Principles and Practices 4 th Ed by William Stallings] 181 181 What is man in the middle attack? The arrows flowing from the decision shape are usually labeled with Yes, No or True, False. Programs and Notes for MCA. Explain the working of the SHA algorithm c. What is a digital signature? 9M These algorithms have been shown to contain flaws (i.e., there's the possibility that two different inputs can produce the same output), but they're robust enough to verify file integrity in the vast majority of cases. Question: 1. So, coming to the scenario of half adder, it adds two binary digits where the input bits are termed as augend and addend and the result will be two outputs one is the sum and the other is carry. Explain Data Encryption Standard (DES) symmetric cryptographic algorithm along with different modes of operations. CSVTUonline.com U.58 Cryptographic hashes play a fundamental role in modern cryptosystems. Advance Encryption Standard (AES) algorithm was developed in 1998 by Joan Daemen and Vincent Rijmen, which is a symmetric key block cipher [7]. Explain. If user A has private key X A =36 and user B has private key X B =58, compute the secret key of user A and user B. Output: minimum cost tree T <= E that spans all vertices. A message of any length taken as input, and output to a short, fixed length hash. Also refer AES Basics and MATLAB Code >>.. Benefits or advantages of AES. (a) Draw and explain basic model of symmetric cryptosystem. Masters in Computer Applications. Draw AES block diagram and explain the steps in detail. In the threshold scheme this number is less than the total number of parts. The rounds in DES include Expansion Permutation, Xor, S-box, P-box, Xor and Swap. An algorithm is basically a procedure or a formula for solving a data snooping problem. [6] 4 a) Identify the possible threats for RSA algorithm and list their counter measures. 4 explain various security services with an example which follows Feistel structure it uses higher length key such. 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