January 2018
Intermediate to advanced
416 pages
10h 40m
English
“Mathematicians have tried in vain to this day to discover some order in the sequence of prime numbers, and we have reason to believe that it is a mystery into which the human mind will never penetrate.”—Leonhard Euler, 18th-century mathematician

All the ciphers described in this book so far have been in existence for hundreds of years. These ciphers worked well when hackers had to rely on pencil and paper, but they’re more vulnerable now that computers can manipulate data trillions of times faster than a person can. Another problem with these classical ciphers is that they use the same key for encryption ...