GIFT: A Small Present for Cybersecurity and IoT
The PRESENT cipher supported a lightweight approach to encryption and is well suited to resource-limited devices. A paper in 2017 by Banik et al showed an extension of this method and which created an even smaller footprint, and more optimized for hardware [1]:
It also fixed some of the security weaknesses of PRESENT. As many systems are now looking to authenticate encryption with AEAD (Authenticated Encryption with Additional Data). With AEAD we add in extra data and which can be used to authenticate the connected cipertext. For example, with network packets, we could add in the source port and sequence number into the additional data, and where these were used to perform the authentication. The AEAD addition was then added through a submission to the NIST competition for lightweight cryptography with GIFT-COFB [2]. In Round 1, there were 56 cipher methods submitted, and this has been reduced down, to the last 10 in the final round.
GIFT-COFB is a lightweight crypto cipher created by Subhadeep Banik, Avik Chakraborti, Tetsu Iwata, Kazuhiko Minematsu Mridul Nandi, Thomas Peyrin, Yu Sasaki, Siang Meng Sim and Yosuke Todo. It uses a COFB (COmbined FeedBack) block cipher…
