Question

Let us assume the situation; a person wants to share a message “DATAFULL" to his friend in the opposite side through social network. He/she uses Data Encryption Standard (DES) algorithm for session encryption during his communication and assume that he/she uses, the key as “AB01 CD45 EF67 AB89". Generate the key for the first four rounds.

MATRIX:

14 17 11 24 01 OS 03 28 15 21 10 23 19 12 04 26 08 16 07 27 20 13 02 41 52 31 37 47 55 30 10 51 45 33 48 44 49 39 56 34 53 46 42 5O 36 29 32 ​

Answer 1

27892 wiowooq uwiopqj w78929