To generate a secret key, we will use the os module’s urandom() method. This is probably the weakest link in the chain. The stronger the key, the stronger your encryption. To use AES Encryption and Decryption in Python, we must follow the steps below.ĪES encryption needs a strong key. Steps to create encryption and decryption in Python In this example, we will see the AES encryption and decryption of the 16-byte text. Top Secret information requires either 192-bit or 256-bit key lengths.
Symmetric, aka a secret key, ciphers use the same key for encrypting and decrypting, so the sender and the receiver must both know - and use - the same secret key.Īll key lengths can be used to protect a Confidential and Secret level. Each cipher encrypts and decrypts the data in blocks of 128 bits using cryptographic keys of 128, 192, and 256 bits.
