Explain attack on double DES with example. Write with neat block diagram triple DES with two keys.

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teamques10 ★ 70k

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Mumbai university > Electronics and telecommunication Engineering > Sem 7 > Data compression and Encryption

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Years: Dec 2015

data compression and encryption

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written 8.8 years ago by

teamques10 ★ 70k

Attack on double DES:

i. The simplest form of multiple encryption has two encryption stages and two keys.

ii. Given a plaintext P and two encryption keys K1 and K2, cipher text C is generated as:

C = E (K2, E (K1, P))

Decryption requires that the keys be applied …

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