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The Ciphertext for the Plaintext 11010101, given that the key is 0111010001 is

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The Ciphertext for the Plaintext 11010101, given that the key is 0111010001 is

(a) 00010001

(b) 10110010

(c) 11010010

(d) 01110011

This question was addressed to me during an internship interview.

Origin of the question is The Simplified Data Encryption Standard (SDES) topic in portion Block Ciphers and the Data Encryption Standard of Cryptograph & Network Security

1 Answer

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Best answer
Correct choice is (d) 01110011

Explanation: Perform the SDES Encryption algorithm and compute the cipher text.

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