In Cybersecurity, Where Would You Find Dumbo, Jumbo and a Pink Elephant?

Well, you will find these names as part of the method of light-weight encryption method known as Elephant, and which is one of the final contenders for a NIST competition [here]. Whichever method wins the competition will probably become a standard on billions of devices.

Within Elephant [1] we have three different variations: Dumbo, Jumbo and Delirium (and which is a Belgian beer with a pink elephant logo).It was created by Tim Beyne, Yu Long Chen, Christoph Dobraunig, and Bart Mennink. Tim and Yu are from KU Leuven and imec-COSIC, Belgium, and Christoph and Bart from Radboud University, The Netherlands.

Overall, Elephant is an authenticated encryption scheme, based on a nonce-based encrypt-then-MAC construction. We can thus provide a nonce (also known as an initialization vector — IV) and which is the salt value for the cipher. This makes sure that the ciphertext will change when we are using the same key and the same plaintext. Along it supports Authenticated encryption with Associated Data (AEAD) and where we can provide additional data for the cipher. Unlike the nonce value, this additional data is not sent with the ciphertext or used within the encryption method but can be used to authenticate the ciphertext. An example might be to link a packet sequence number to the additional data so…