پایگاه علمی سعید سان دانلود رایگان مقالات علمی کنفرانس و ژورنال
دانلود پاورپوینت Cryptography and Network Security Third Edition by William Stallings Lecture slides Chapter 1 – Introduction The art of war teaches us to rely not on the likelihood of the enemy’s not coming, but on our own readiness to receive him; not on the chance of his not attacking, but rather on the fact that we have made our position unassailable. —The Art of War, Sun Tzu Background Information Security requirements have changed in recent times traditionally provided by physical and administrative mechanisms computer use requires automated tools to protect files and other stored information use of networks and communications links requires measures to protect data during transmission Traditionally information security provided by physical (eg. rugged filing cabinets …
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