Information Security (Subject) / 02.0 Basics of Cryptography: Intro (Lesson)

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• Cryptology Science of secure communication
• Cryptography study of the principles of information conceal
• Cryptanalysis and types science of recovering information from ciphers w/o key Types: ciphertext only, ciphertext + plaintext, chosen plaintext or chosen ciphertext, differential, linear
• Cipher method of transforming plaintext to cipher
• Algorithms purposes and categories o   Purposes: encryption, signing o   Categories: symmetric (1 key), asymmetric (2 keys), hash (0 keys)

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