Understanding Cryptography Quotes

“Interestingly, differential cryptanalysis was first discovered in the research community in 1990. At this point, the IBM team declared that the attack was known to the designers at least 16 years earlier, and that DES was especially designed to withstand differential cryptanalysis. Finally,”
― Christof Paar, Understanding Cryptography: A Textbook for Students and Practitioners

“The Data Encryption Standard (DES) has been by far the most popular block cipher for most of the last 30 years. Even though it is nowadays not considered secure against a determined attacker because the DES key space is too small, it is still used in legacy applications. Furthermore, encrypting data three times in a row with DES — a process referred to as 3DES or triple DES — yields a very secure cipher which is still widely used today”
― Christof Paar, Understanding Cryptography: A Textbook for Students and Practitioners

“There are exceptions, for instance, the popular stream cipher RC4. •”
― Christof Paar, Understanding Cryptography: A Textbook for Students and Practitioners