In 1997, a contest began to develop a new encryption algorithm to become the Advanced Encryption Standard. After years of debate, one algorithm was chosen as the AES. But how does AES work? And what makes for a secure encryption algorithm?

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0:00 The Contest
1:02 Encryption
3:57 Confusion and Diffusion
5:44 Block Cipher
6:55 KeyExpansion
7:34 AddRoundKey
8:14 Substitution Cipher
8:55 SubBytes
11:30 MixColumns
12:53 ShiftRows
13:21 The Algorithm

Primal Skill

George

Ethical AI

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In 1997, Rijndael was selected as the Advanced Encryption Standard (AES) by the US National Institute of Standards and Technology. AES is widely used today in various applications including hard drive encryption and internet communication. At its core, AES operates as a block cipher using concepts of confusion and diffusion to ensure security. The process involves multiple rounds of byte substitution, row shifting, column mixing, and key addition, making it a robust encryption standard.

AES: How to Design Secure Encryption