In this paper, we propose an algebraic attack on stream ciphers. Starting from a well-known due to Courtois and Meier, design especially effective against nonlinear filter generators. First, test it two toy ciphers then show that the level of security WG-PRNG, one submitted NIST competition Lightweight Cryptography, is less than claimed until now.

Lightweight cryptography algorithms are increasing in value because they can enhance security under limited resources. National Institute of Standards and Technology is working on standardising lightweight authenticated encryption with associated data. Thirty-two candidates included the second round NIST selection process, their specifications differ respect to various points. Therefore, for ea...

Lightweight cryptography has been one of the “hot topics” in symmetric cryptography in the recent years. A huge number of lightweight algorithms have been published, standardized and/or used in commercial products. In this paper, we discuss the different implementation constraints that a “lightweight” algorithm is usually designed to satisfy. We also present an extensive survey of all lightweig...

The security of resource-constrained devices is critical in the IoT field, given that everything interconnected. Therefore, National Institute Standards and Technology (NIST) initialized lightweight cryptography (LWC) project to standardize algorithms for devices. After two rounds, NIST announced finalists 2021. finalist are Ascon, Elephant, GIFT-COFB, Grain-128AEAD, ISAP, PHOTON-Beetle, Romulu...

ASCON is one of the elegant designs authenticated encryption with associated data (AEAD) that was selected as first choice for lightweight applications in CAESAR competition, which also has been submitted to NIST cryptography standardization. literature a while; however, there no successful AEAD secure and at same time lighter than ASCON. In this article, we have overcome challenge constructing...

TinyJAMBU is one of the finalists in NIST lightweight cryptography competition. It considered to be more efficient ciphers competition and has undergone extensive analysis recent years as both keyed permutation well mode are new designs. In this paper we present a related-key forgery attack on updated TinyJAMBU-v2 scheme with 256- 192-bit keys. We introduce high probability differential where d...

As an invited speaker of the ACISP 2017 conference, Dongxi Liu recently introduced a new lattice-based encryption scheme (joint work with Li, Kim and Nepal) designed for lightweight IoT applications, and announced plans to submit it to the NIST postquantum competition. The new scheme is based on a variant of standard LWE called Compact-LWE, but is claimed to achieve high security levels in cons...

In this talk, we review the successful cryptanalysis of two cryptographic hash functions, EnRUPT and SHAMATA. Both were submitted as candidates to the NIST SHA-3 competition.

Highly constrained devices that are interconnected and interact to complete a task being used in diverse range of new fields. The Internet Things (IoT), cyber-physical systems, distributed control vehicular wireless sensor networks, tele-medicine, the smart grid few examples these In any contexts, security privacy might be essential aspects. Research on secure communication (IoT) networks is hi...