A novel chaotic encryption scheme based on pseudorandom bit padding
Cryptography is always very important in data origin
authentications, entity authentication, data integrity and
confidentiality. In recent years, a variety of chaotic cryptographic
schemes have been proposed. These schemes has typical structure
which performed the permutation and the diffusion stages,
alternatively. The random number generators are intransitive in
cryptographic schemes and be used in the diffusion functions of the
image encryption for diffused pixels of plain image. In this paper,
we propose a chaotic encryption scheme based on pseudorandom bit
padding that the bits be generated by a novel logistic pseudorandom
image algorithm. To evaluate the security of the cipher image of
this scheme, the key space analysis, the correlation of two adjacent
pixels and differential attack were performed. This scheme tries to
improve the problem of failure of encryption such as small key space
and level of security.
Keywords: Cryptography, chaos, Image Padding
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ABOUT THE AUTHORS
Sodeif Ahadpour
Sodeif Ahadpour is a assistant professor at the University of Mohaghegh Ardabili, Ardabil, Iran. He has obtained his PhD in Theoratical Physics at Tabriz university, Tabriz, Iran (2007). His research interest includes quantum computing & quantum information, discrete chaotic dynamical systems, graph theory & complex network, chaotic cryptography, Wavelet and random generator.
Yaser Sadra
Yaser Sadra is a research scientist at the University of Mohaghegh Ardabili, Ardabil, Iran. He has obtained his master degree in Theoratical Physics at University of Mohaghegh Ardabili, Ardabil, Iran (2009). His research interest includes discrete chaotic dynamical systems, graph theory & complex network, chaotic cryptography and random generator.
Zahra Arasteh Fard
Zahra Arasteh Fard is a research scientist at the University of Mohaghegh Ardabili, Ardabil, Iran. He has obtained his master degree in Organic chemistry at University of Mohaghegh Ardabili, Ardabil, Iran (2010). His research interest includes Organic chemistry, synthesis, chaotic cryptography and random generator.
Sodeif Ahadpour
Sodeif Ahadpour is a assistant professor at the University of Mohaghegh Ardabili, Ardabil, Iran. He has obtained his PhD in Theoratical Physics at Tabriz university, Tabriz, Iran (2007). His research interest includes quantum computing & quantum information, discrete chaotic dynamical systems, graph theory & complex network, chaotic cryptography, Wavelet and random generator.
Yaser Sadra
Yaser Sadra is a research scientist at the University of Mohaghegh Ardabili, Ardabil, Iran. He has obtained his master degree in Theoratical Physics at University of Mohaghegh Ardabili, Ardabil, Iran (2009). His research interest includes discrete chaotic dynamical systems, graph theory & complex network, chaotic cryptography and random generator.
Zahra Arasteh Fard
Zahra Arasteh Fard is a research scientist at the University of Mohaghegh Ardabili, Ardabil, Iran. He has obtained his master degree in Organic chemistry at University of Mohaghegh Ardabili, Ardabil, Iran (2010). His research interest includes Organic chemistry, synthesis, chaotic cryptography and random generator.
