109 citations · 372 across the 8 of their papers we have counts for
7 papers · 1 filter
Security problems with a chaos-based deniable authentication scheme
G. Alvarez
Recently, a new scheme was proposed for deniable authentication. Its main originality lied on applying a chaos-based encryption-hash parallel algorithm and the semi-group property…
Cryptanalyzing an improved security modulated chaotic encryption scheme using ciphertext absolute value
G. Alvarez, F. Montoya, M. Romera +1
This paper describes the security weakness of a recently proposed improved chaotic encryption method based on the modulation of a signal generated by a chaotic system with an appro…
Estimating short-time period to break different types of chaotic modulation based secure communications
Gonzalo Alvarez, Shujun Li
In recent years, chaotic attractors have been extensively used in the design of secure communication systems. One of the preferred ways of transmitting the information signal is bi…
Cryptanalyzing a discrete-time chaos synchronization secure communication system
Gonzalo Alvarez, Fausto Montoya, Miguel Romera +1
This paper describes the security weakness of a recently proposed secure communication method based on discrete-time chaos synchronization. We show that the security is compromised…
Cryptanalysis of dynamic look-up table based chaotic cryptosystems
G. Alvarez, F. Montoya, M. Romera +1
In recent years many chaotic cryptosystems based on Baptista's seminal work have been proposed. We analyze the security of two of the newest and most interesting ones, which use a…
Breaking parameter modulated chaotic secure communication system
G. Alvarez, F. Montoya, M. Romera +1
This paper describes the security weakness of a recently proposed secure communication method based on parameter modulation of a chaotic system and adaptive observer-based synchron…