Convert the text hello world into hex you can use an online

Convert the text “hello world” into hex (you can use an online converter), then encrypt that binary content with a 4 bit block cipher whose codebook consists of 6, 0, 13, 4, 3, 1, 14, 8, 7, 12, 9, 15, 5, 2, 11, 10. (The codebook is simply the output blocks in the order of the integers corresponding to the 16 possible input blocks). What will the encrypted output be for this text?

Solution

\"hello world\" --> (using an online converter http://www.swingnote.com/tools/texttohex.php) 68 65 6c 6c 6f 20 77 6f 72 6c 64 -->147 141 145 145 1410 136 88 1410 813 145 143