Optical Fiber Communications 4th Edition by Gerd Keiser

Exercise 22

The basic unit for processing the Advanced Encryption Standard (AES) algorithm is the byte. For convenience, byte values are denoted using hexadecimal notation with each of two groups of four bits denoted by a single character, as shown in Table 13.11. For example, the element {01100011} can be represented by {63}. Using Table 13.11, find the binary equivalent of the following words:
( a ) 32 43 f6 a8 88 5a 30 8d 31 31 98 a2 e0 37 07 34 ( b ) 2b 7e 15 16 28 ae d2 a6 ab f7 15 88 09 cf 4f 3c