Summary
In this chapter, you learned about symmetric encryption. We have explored the Boolean operations necessary for understanding symmetric encryption, KE, and S-Box functionality. Then, we deep-dived into how simple DES, DES, 3DES, and DESX work and their principal vulnerabilities and attacks.
After these topics, we analyzed AES (Rijndael), including its implementation schema and the logic of the steps that make this algorithm so strong. Regarding the vulnerabilities and attacks on AES, you have understood how the difference between ECB mode and CBC mode can make it vulnerable to block cipher implementation attacks.
Finally, we explored some of the best-known side-channel attacks valid for most cryptographic algorithms.
These topics are essential because now you have learned how to implement a cryptographic symmetric algorithm, and you have more familiarity with its peculiarities. We will see many correlations with this part in the next chapters. Chapter 9, Crypto Search...
