Summary

In this chapter, we covered AES, the strongest private key system in common use today, and its two modes, ECB and CBC. We covered the padding oracle attack against CBC, which is made possible when an error message gives the attacker more information than they should have about the encryption process.

Finally, we covered RSA, the primary public key algorithm in use today to send secrets over the internet, and we also looked at the challenge where we cracked RSA in the case where the two prime numbers are similar instead of being independent and randomly chosen. We also looked at the future of cryptography and how it will help secure IOT devices.