Symmetric ratchets and one-way key chains play a vital role in numerous important security
protocols such as TLS 1.3, DTLS 1.3, QUIC, Signal, MLS, EDHOC, OSCORE, and Apple …

Stream cipher is one of the efficient cryptographic primitives to provide confidentiality of
electronically transmitted data. Where it is widely used in practice (eg, in mobile phones …

A5/1 is the stream cipher algorithm used in GSM communication in order to provide over the
air communication privacy. The objective of this paper is to modify the algorithm of the …

Cryptosystems employing a synchronous binary-additive stream cipher are susceptible to a
generic attack called'bit-flipping', in which the ciphertext is modified to decrypt into a …

In the recent past, research work has been done in the area of steam ciphers and as a result
of which, many design models for stream ciphers were proposed. In Order to realize a world …

Abstract Transport Layer Security (TLS) 1.3 and the Signal protocol are very important and
widely used security protocols. We show that the key update function in TLS 1.3 and the …

In this paper we introduced a design of new pseudo random generator, which generate
binary sequences that would be used as an encryption key in Stream Cipher Cryptosystem …

In the latest past, research work has been done in the region of steam ciphers and as a
answer of which, several design models for stream ciphers were projected. In Order to …

Global system for mobile communication (GSM) uses A5/1 stream cipher to encrypt the
information transmitted between subscribers mobile and the base station. Recent research …

In this paper, a secure data hiding method is introduced. It increases the security of
embedded data through combining between the steganography and cryptography. First, the …