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Historical milestones in cryptography (CAP 6) (Caesar cipher (substitution…
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simmetryc cryptography
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Triple DES (168 bit key - 4 versions - DES-EEE3, DES-EDE3, DES-EEE2, DES-EDE2)
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Advanced Encryption Standard (3 key strenghts: 128, 192, 256 bit)
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cryptographic basics
ciphers
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substitution ciphers (characters or bit of the P are replaced to create C) (Es Caesar, Vigenere)
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running key ciphers (decide a common key (long) between sender and receiver, eg: a book)
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goals of cryptography
confidentiality (protects data at rest, in transition, in use. Two main types: symmetric and asymmetric)
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cryptography concepts (P= plaintext, C = ciphertext, key)
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modern cryptography
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cryptographic keys (the algorithm is public, the key is secret)
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