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Plaintext: 1 1 0 1 0 1 0 1 ; Key: 1 1 0 1 0 0 0 1 ; Cipher text: 0 1 1

Plaintext:

11010101

; Key:

11010001

; Cipher text:

01110011

solve using DES

[

do one

round of operation

]

1 = 00000001

0 = 00000000

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