RankSign is a code-based signature scheme proposed to the NIST competition for postquantum cryptography [AGH17]. It is based on the rank metric and enjoys remarkably small key sizes, about 10KBytes for an intended level of security of 128 bits. It is also one of the fundamental blocks used in the rank metric identity based encryption scheme [GHPT17]. Unfortunately we will show that all the para...

The NIST competition for developing the new cryptographic hash algorithm SHA-3 has entered its third round. One evaluation criterion is the ability of the candidate algorithm to be implemented on resource-constrained platforms. This includes FPGAs for embedded and hand-held devices. However, there has not been a comprehensive set of lightweight implementations for FPGAs reported to date. We hop...

Ascon is a family of cryptographic primitives for authenticated encryption and hashing introduced in 2015. It selected as one the ten finalists NIST Lightweight Cryptography competition. Since its introduction, has been extensively cryptanalyzed, results these analyses can indicate good resistance this against known attacks, like differential linear cryptanalysis.Proving upper bounds probabilit...

The Maximum Distance Separable (MDS) mapping, used in cryptography deploys complex Galois field multiplications, which consume lots of area in hardware, making it a costly primitive for lightweight cryptography. Recently in lightweight hash function: PHOTON, a matrix denoted as ‘Serial’, which required less area for multiplication, has been multiplied 4 times to achieve a lightweight MDS mappin...

SHA-3 (Secure hash algorithm-3), originally known as Keccak is a cryptographic hash function selected as the winner of the NIST hash function competition. Hash functions have many applications in cryptography mainly in digital signatures and message authentication codes and in network security. Implementation of the main building block (compression function) for five different SHA-3 candidates ...

Lightweight implementation of Elliptic Curve Cryptography on FPGA has been a popular research topic due to the boom of ubiquitous computing. In this paper we propose a novel single instruction based ultra-light ECC crypto-processor coupled with dedicated hard-IPs of the FPGAs. We show that by using the proposed single instruction framework and using the available block RAMs and DSPs of FPGAs, w...

The NIST LightWeight Cryptography (LWC) selection process aims to standardise cryptographic functionality which is suitable for resource-constrained devices. Since the outcome likely have significant, long-lived impact, careful evaluation of each submission with respect metrics explicitly outlined in call imperative. Beyond robustness submissions against cryptanalytic attack, related their impl...

This paper introduces and analyzes Triplex, a leakage-resistant mode of operation based on Tweakable Block Ciphers (TBCs) with 2n-bit tweaks. Triplex enjoys beyond-birthday ciphertext integrity in the presence encryption decryption leakage liberal model where all intermediate computations are leaked full only two TBC calls operating long-term secret protected implementationlevel countermeasures...