Cryptography & Network Security : Express Learning

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Cover Contents Preface Chapter 1: Overview of Network Security Passive Attacks Active Attacks Multiple-choice Questions Answers Chapter 2: Cryptography and Finite Fields Symmetric-key Encipherment Asymmetric-key Encipherment Algorithm Group Ring Field Algorithm Multiple-choice Questions Answers Chapter 3: Symmetric-key Ciphers Additive cipher Shift cipher Caesar cipher Multiplicative cipher Affine cipher Autokey cipher Playfair cipher Vigenere cipher Hill cipher Basic model Final design of the Feistel cipher Encryption Decryption Encryption Decryption Multiple-choice Questions Answers Chapter 4: Symmetric-key Algorithms DES Structure DES Function Weakness in the Cipher Design Weakness in the Cipher Key Meet-in-the-middle Attack 3-DES with Two Keys 3-DES with Three Keys Working of IDEA Encryption Round Output Transformation Decryption Strength of IDEA General Design of AES Structure of Encryption Round Transformations Key Expansion in AES-128 Electronic Code Book (ECB) Mode Cipher Block Chaining (CBC) Mode Cipher Feedback (CFB) Mode Output Feedback (OFB) Mode Multiple-choice Questions Answers Chapter 5: Number Theory Proof Miller-Rabin algorithm Multiple-choice Questions Answers Chapter 6: Asymmetric-key Algorithms RSA Key Generation RSA Encryption and Decryption Distribution of Public Keys Distribution of Secret Keys using Public-key Cryptography Diffie-Hellman algorithm Proof of algorithm Security of the Diffie-Hellman algorithm ElGamal key generation ElGamal encryption ElGamal decryption Proof of decryption ECC with Diffie-Hellman key exchange ECC encryption ECC decryption Security of ECC Multiple-choice Questions Answers Chapter 7: Message Authentication and Hash Functions Simple Hash Function Whirlpool Hash Function Whirlpool Cipher Design Objectives of HMAC HMAC Implementation Direct digital signature Arbitrated digital signature RSA digital signature scheme on a message digest Proof of the digital signature algorithm Symmetric-key encryption technique Public-key encryption technique Symmetric-key encryption technique Public-key encryption technique Multiple-choice Questions Answers Chapter 8: Digital Signatures and Authentication Protocols Direct digital signature Arbitrated digital signature RSA digital signature scheme on a message digest Proof of the digital signature algorithm Symmetric-key encryption technique Public-key encryption technique Symmetric-key encryption technique Public-key encryption technique Multiple-choice Questions Answers Chapter 9: Network Security Authentication only Confidentiality only Confidentiality and Authentication Compression E-mail Compatibility Segmentation and Reassembly MIME Overview S/MIME Functionality S/MIME Messages S/MIME Certificate Processing S/MIME Enhanced Security Services AH Transport Mode AH Tunnel Mode Transport Mode ESP Tunnel Mode ESP SSL architecture Working of SET Dual Signatures Multiple-choice Questions Answers Chapter 10: System Security Intrusion Techniques Antivirus Approaches Advantages Disadvantages Advantages Disadvantages Advantages Disadvantages Multiple-choice Questions Answers Index