Tabla de Contenidos: “…Implementing Hash Functions -- Implementing SHA-1/256/368/512, MD2, and MD5 -- Conclusion -- References -- Chapter 9: Block Ciphers: DES and AES -- Preliminaries -- Networks Based on Substitution and Permutation -- Attacks Based on Linear Cryptanalysis -- Attacks Based on Differential Cryptanalysis -- The Data Encryption Standard (DES) -- DES Description -- Implementation of DES -- The Advanced Encryption System (AES) -- SubBytes Operations -- The ShiftRows Operation -- The MixColumn Operation -- The AddRoundKey Operation -- Key Expansion -- InvSubBytes Operation -- InvShiftRows Operation -- InvMixColumns Operation -- Conclusion -- References -- Chapter 10: Asymmetric Encryption Schemes -- RSA -- ElGamal -- Merkle-Hellman -- Knapsack Approach -- The Algorithms -- Conclusion -- References -- Chapter 11: Formal Techniques for Cryptography -- Probability Theory -- Random Variables -- Birthday Problem -- Entropy -- Randomness in Cryptography -- Conclusion -- References -- Chapter 12: Visual Cryptography -- Conclusion -- References -- Chapter 13: Chaos-Based Cryptography -- Chaos Maps and Functions -- Logistic Map -- Chaos Theory in Cryptography -- Sensitivity to Initial Conditions -- Conclusion -- References -- Chapter 14: Steganography -- Algorithms and Methods for Different Steganography Types -- Steganography for Image Files -- Steganography for Audio Files -- Steganography for Video Files -- Practical Implementation -- Implementing the Least Significant Bit (LSB) Method -- Implementing the Histogram Analysis Method -- Conclusion -- References -- Index…”