Data Encryption Standard (DES)
- is a block cipher, symmetric key algorithm. It’s being phased out in favor of faster methods like AES
DES Algorithm Illustrated
DES Types
- normal DES - bad
- Double DES - bad still, susceptible to Meet-in-the-Middle Attack
- Triple DES (3DES or TDES)
- either:
- 3 encryptions with 3 secret-keys
- EDE mode - encrypt-decrypt-encrypt with 2 secret-keys
- the problem with 3DES is that it’s too slow
- either: