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Cryptographic Algorithms CST 393 KTU CS Honour Notes Semester V -Dr Binu V P

About Me About the Course and Scheme Syllabus Model Question Paper University Question Papers ******************************************************** Module-1 (Introduction to the Concepts of Security) Introduction CIA Triad  OSI Security Architecture Security Attacks Security Services Security Mechanisms Model for Network Security Classical Encryption Techniques     Symmetric Cipher Model     Cryptography -  Crypt Analysis Substitution Ciphers-Caesar Cipher     Mono-alphabetic Ciphers     Playfair Cipher     Hill Cipher Poly Alphabetic Ciphers- Vigenere Cipher     Vernam Cipher- One Time Pad Transposition Ciphers Module-2 (Symmetric Key Crypto Systems) Stream Cipher Vs Block Cipher Traditional Block Cipher Structure- Fiestel Structure Data Encryption Standard - DES Algorithm Differential and Linear Cryptanalysis Double DES and Triple DES International Data Encryption Algorithm ( IDEA) Advanced Encryption Standard ( AES) Block Cipher Modes of Operation Stream Cipher and RC4 Module-3
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Syllabus CST 393 Cryptographic Algorithms

Syllabus Module-1 (Introduction to the Concepts of Security) Need for security, Security approaches, Principles of security, Types of attacks, OSI Security Architecture, Classical encryption techniques - Substitution techniques, Transposition techniques. Stream cipher, Block cipher, Public key cryptosystems vs. Symmetric key cryptosystems, Encrypting communication channels. Module-2 (Symmetric Key Cryptosystems) Overview of symmetric key cryptography, Block cipher principles, Data Encryption Standard (DES), Differential and Linear cryptanalysis, Double DES, Triple DES, International Data Encryption Algorithm (IDEA), Advanced Encryption Algorithm (AES),Block cipher modes of operation, Stream cipher, RC4. Module-3 (Public Key Cryptosystems) Principles of public key cryptosystems, RSA algorithm, RSA illustration, Attacks, ElGamal cryptographic system, Knapsack algorithm, Diffie-Hellman key exchange algorithm, Elliptic curve cryptosystems. Module-4 (Key Management) Symmetric key distributi
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About the course and scheme CST 393 Cryptographic Algorithms

 CST 393 CRYPTOGRAPHIC ALGORITHMS  Category L      T      P      Credit      Year of Introduction VAC           3      1      0      4                     2019 Preamble: The course on Cryptographic Algorithms aims at exploring various algorithms deployed in offering confidentiality, integrity, authentication and non-repudiation services. This course covers classical encryption techniques, symmetric and public key crypto-system, key exchange and management, and authentication functions. The concepts covered in this course enable the learners in effective use of cryptographic algorithms for real life applications. Prerequisite: A sound background in Number Theory. Course Outcomes: After the completion of the course the student will be able to CO1 Identify the security services provided for different types of security attacks. (Cognitive Knowledge Level : Understand) CO2 Summarize the classical encryption techniques for information hiding.  (Cognitive Knowledge Level: Apply) CO3 Illustrat
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University Question Papers CST 393 Cryptographic Algorithms

 
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Model Question Paper CST 393 Cryptographic Algorithms

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY FIFTH SEMESTER B.TECH DEGREE EXAMINATION(HONORS), MONTH & YEAR Course Code: CST 393 Course Name: Cryptographic Algorithms Max.Marks:100 Duration: 3 Hours PART A Answer all Questions. Each question carries 3 Marks 1. State the two approaches in attacking a cipher. 2. Define Substitution Cipher. Encrypt using one time pad M = HONORS and K = CIPHER. 3. Specify the purpose of S-Boxes in Data Encryption Standard (DES). 4. Differentiate between diffusion and confusion. 5. Perform encryption using RSA Algorithm for the following p=7; q=11; e=13;M=5 6. Is Diffie-Hellman key exchange protocol vulnerable? Justify. 7. List the techniques for distribution of public keys. 8. Define a certificate authority and its relation to public key cryptography. 9. Distinguish between integrity and message authentication. 10. What types of attacks are addressed by message authentication? Part B (Answer any one question from each module. Each question carries 14 Marks
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OSI Security Architecture

To assess effectively the security needs of an organization and to evaluate and choose various security products and policies, the manager responsible for security needs some systematic way of defining the requirements for security and characterizing the approaches to satisfying those requirements. This is difficult enough in a centralized data processing environment; with the use of local and wide area networks, the problems are compounded. ITU-T Recommendation X.800, Security Architecture for OSI, defines such a systematic approach.The OSI security architecture is useful to managers as a way of organizing the task of providing security. Furthermore, because this architecture was developed as an international standard, computer and communications vendors have developed security features for their products and services that relate to this structured definition of services and mechanisms. The OSI security architecture focuses on security attacks, mechanisms, and services. These can be d
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Computer Security Concept- CIA Triad

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Definition of Computer Security The NIST Computer Security Handbook [NIST95] defines the term computer security as follows: Computer Security: The protection afforded to an automated information system in order to attain the applicable objectives of preserving the integrity, availability,and confidentiality of information system resources (includes hardware, software, firmware, information/data, and telecommunications).   This definition introduces three key objectives that are at the heart of computer  security: Confidentiality: This term covers two related concepts:             Data confidentiality: Assures that private or confidential information is not made available or disclosed to unauthorized individuals.      Privacy: Assures that individuals control or influence what information related to them may be collected and stored and by whom and to whom that information may be disclosed.   Integrity: This term covers two related concepts:      Data integrity: Assures that information
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