Symmetric Algorithms

Symmetric algorithms use one key to encrypt data and the same key to decrypt it.

Your front door key is symmetric — you use the same key to lock as well as unlock your door. The secret to the security of your front door is that you have the key with you and you don’t give a copy to anyone else. If you do trust someone else with the key, it will always be an exact copy of the one you have.

DES

Triple DES

IDEA

AES