Specification of the Stream Cipher WG-16 Based Confidentiality and Integrity Algorithms

Block and Stream Cipher Based Cryptographic Algorithms: A Survey

The encryption algorithms are designed to provide integrity and confidentiality of the messages. Modern cryptosystems are classified into three categories such as Block ciphers, Stream cipher and Hybrid ciphers of Hummingbird. This paper details about various types of block ciphers and stream ciphers. In this paper we also present the hybrid model of hummingbird and its comparison among other c...

Analysis of Stream Cipher Based Authenticated Encryption Schemes

Authenticated Encryption (AE) is the cryptographic process of providing simultaneous confidentiality and integrity protection to messages. This approach is more efficient than applying a two-step process of providing confidentiality for a message by encrypting the message, and in a separate pass providing integrity protection by generating a Message Authentication Code (MAC). AE using symmetric...

A Hybrid Cryptographic algorithm design using Block and Stream cipher based Confidentiality and Integrity in Wireless Sensors Networks

Powers of Subfield Polynomials and Algebraic Attacks on Word-Based Stream Ciphers

In this paper we investigate univariate algebraic attacks on filter generators over extension fields Fq = F2n with focus on the WelchGong (WG) family of stream ciphers. Our main contribution is to break WG-5, WG-7, WG-8 and WG-16 by combining results on the so-called spectral immunity (minimum distance of certain cyclic codes) with properties of the WG type stream cipher construction. The spect...

Multiset Collision Attacks on Reduced-Round SNOW 3G and SNOW 3G (+)

The stream cipher SNOW 3G designed in 2006 by ETSI/SAGE is a base algorithm for the second set of 3GPP confidentiality and integrity algorithms. In this paper we study the resynchronization mechanism of SNOW 3G and of a similar cipher SNOW 3G⊕ using multiset collision attacks. For SNOW 3G we show a simple 13-round multiset distinguisher with complexity of 2 steps. We show full key recovery chos...