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CSE15 Discrete Mathematics 03/15/17

CSE15 Discrete Mathematics 03/15/17. Ming-Hsuan Yang UC Merced. 4.1 Divisibility and modular arithmetic. Number theory : the branch of mathematics involves integers and their properties If a and b are integers with a?0, we say that a divides b if there is an integer c s.t. b=ac

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253 views • 24 slides

?????? AES

?????? AES. ? ??? : ???. DES challenge. AES (Advanced Encryption Standard). AES Pseudo. AES(in,out,key) { KeyExpansion(Key,RoundKey) state = in AddRoundKey (state,RoundKey[0]) for round=1 step 1 to Nr-1 SubBytes(stats) ShiftRows(stats)

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607 views • 21 slides

Discrete Log

Discrete Log. Discrete Logarithm. Discrete log problem: Given p , g and g a (mod p) , determine a This would break Diffie-Hellman and ElGamal Discrete log algorithms analogous to factoring, except no sieving This makes discrete log harder to solve

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590 views • 13 slides

Discrete Log

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140 views • 13 slides

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4 mod - PowerPoint PPT Presentation

CSE15 Discrete Mathematics 03/15/17

?????? AES

Discrete Log

Discrete Log