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Two Children
Two Children Children and friendship, portrait of two young girls, smiling and looking at camera while sitting
Happy young couple with champagne glasses in hand dancing at Christmas
Happy young couple with champagne glasses in hand dancing at Christmas beautiful table and tree in the background, selective focus on girl
Child
Child There are two things that we have to learn from a child:1)To be happy for no reason..2)To be always busy by doing some thing....!
Cryptography And Network Security, 4th Edition (2005)
Cryptography And Network Security, 4th Edition (2005) In this age of viruses and hackers, of electronic eavesdropping and electronic fraud, security is paramount. This solid, up-to-date tutorial is a comprehensive treatment of cryptography and network security is ideal for self-study. Explores the basic issues to be addressed by a network security capability through a tutorial and survey of cryptography and network security technology. Examines the practice of network security via practical applications that have been implemented and are in use today. Provides a simplified AES (Advanced Encryption Standard) that enables readers to grasp the essentials of AES more easily. Features block cipher modes of operation, including the CMAC mode for authentication and the CCM mode for authenticated encryption. Includes an expanded, updated treatment of intruders and malicious software. A useful reference for system engineers, programmers, system managers, network managers, product marketing personnel, and system support specialists.