In eSTREAM project, a few lightweight stream cipher for hardware was introduced (2008) and then in FSE 2015 Sprout was proposed. Sprout introduced a new idea, design of stream cipher with shorter internal state by using key not only in initialization but also in keystream generation, but it was insecure. Grain-v1 is almost the lightest secure cipher in world. Fruit stream cipher is successor of...

In this paper, we propose a new stream cipher construction based on block cipher design principles. The main idea is to replace the building blocks used in block ciphers by equivalent stream cipher components. In order to illustrate this approach, we construct a very simple synchronous stream cipher which provides a lot of flexibility for hardware implementations, and seems to have a number of ...

In this paper, a privacy preserving authentication protocol for RFID that relies on a single cryptographic component, a lightweight stream cipher, is constructed. The goal is to provide a more realistic balance between forward privacy and security, resistance against denial of service attacks, and computational efficiency (in tags and readers) than existing protocols. We achieve this goal by so...

Stream ciphers are often used in applications where high speed and low delay are a requirement. The Solitaire stream cipher was developed by B. Schneier as a paper-and-pencil cipher. Solitaire gets its security from the inherent randomness in a shuffled deck of cards. In this paper we investigate semigroups and groups properties of the Solitaire stream cipher and its regular modiÞcations.

RC4 Stream cipher is well known for its simplicity and ease to develop in software. But here, in the proposed design we have heighlighted the modified hardware implémentation of RC4. As RC4 is the most popular stream cipher. The proposed design performs reading and swapping simultaneously in one clock cycle. The proposed design also highlights the adder part which enhances the architecture spee...

The Common Scrambling Algorithm (CSA) is used to encrypt streams of video data in the Digital Video Broadcasting (DVB) system. The algorithm cascades a stream and a block cipher, apparently for a larger security margin. In this paper we set out to analyze the block cipher and the stream cipher separately and give an overview of how they interact with each other. We present a practical attack on...

constructing compact HMAC (Hash-based Message Authentication Code) is required to maintain integrity and authentication in computationally constrained environments like Wireless sensor networks and RFID. DECIM is a hardware oriented stream cipher submitted to the ECRYPT stream cipher project. It is highly scrutinized stream cipher and is portable to implement hashing for highly compact MAC, whi...

Vector Stream Cipher (VSC) is a stream cipher which consists of permutation polynomial over a ring of modulo 2w . The algorithm for generating stream keys is very simple and the encryption speed is very fast. Some theoretical attacks for VSC have been reported so far since the invention of VSC in 2004. Then, the authors proposed some improvements and developed “Vector Stream Cipher 2.0 (VSC 2.0...