Welcome to the resource topic for 2016/355
Title:
Fruit-v2: Ultra-Lightweight Stream Cipher with Shorter Internal State
Authors: Vahid Amin Ghafari, Honggang Hu, Ying Chen
Abstract:A few lightweight stream ciphers were introduced for hardware applications in the eSTREAM project. In FSE 2015, while presenting a new idea (i.e. the design of stream ciphers with the shorter internal state by using a secret key, not only in the initialization but also in the keystream generation), Sprout was proposed. Unfortunately, Sprout is insecure. Because Grain-v1 is the lightest cipher in the portfolio of the eSTREAM project, we introduce Fruit-v2 as a successor of the Grain-v1 and Sprout. It is demonstrated that Fruit-v2 is safe and ultra-lightweight. The size of LFSR and NFSR in Fruit-v2 is only 80 bits (for 80-bit security level), while for resistance to the classical time-memory-data trade-off attack, the internal state size should be at least twice of the security level. To satisfy this rule and to design a concrete cipher, we used some new design ideas. The discussions are presented that Fruit-v2 can be more resistant than Grain-v1 to some attacks such as classical time-memory-data trade-off. The main objective of this work is to show how it is possible to exploit a secret key in a design to achieve smaller area size. It is possible to redesign many of stream ciphers (by the new idea) and achieve significantly smaller area size by the new idea.
ePrint: https://eprint.iacr.org/2016/355
See all topics related to this paper.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .