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Reducing the Key Space of an Image Encryption Scheme Based on Two-Round Diffusion Process

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International Joint Conference (CISIS 2015)

Part of the book series: Advances in Intelligent Systems and Computing ((AISC,volume 369))

Abstract

In this work, we analyze the security of the image encryption scheme proposed by Norouzi et al. (Multimedia Syst 20:45–64, 2014) [1]. The encryption scheme is based on a hash function and a two-round diffusion process applied to each 8 × 8 patches that compose the entire image. The analysis reveals the existence of a huge number of weak keys, allowing us to compute the effective key length, thus reducing the key space from 2512 to 2195 keys.

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References

  1. Norouzi, B., Seyedzadeh, S.M., Mirzakuchaki, S., Mosavi, M.R.: A novel image encryption based on hash function with only two-round diffusion process. Multimed. Syst. 20, 45–64 (2014)

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  2. Bernstein, D.J.: “The Salsa20 Stream Cipher.” SKEW2005, Symmetric Key Encryption Workshop, 2005, Workshop Record. http://www.ecrypt.eu.org/stream/salsa20p2.html

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Acknowledgments

This work has been supported by the MICINN under project “TUERI: Technologies for secure and efficient wireless networks within the Internet of Things with applications to transport and logistics”, TIN2011-25452.

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Authors and Affiliations

  1. Universidad de Málaga, Andalucía Tech, E.T.S.Ingeniería de Telecomunicación, Departamento Ingeniería de Comunicaciones, Campus de Teatinos, 29071, Málaga, Spain

    Alberto Peinado & Andrés Ortiz García

Authors
  1. Alberto Peinado
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  2. Andrés Ortiz García
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Corresponding author

Correspondence to Alberto Peinado .

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Editors and Affiliations

  1. Department of Civil Engineering, Escuela Politécnica Superior, University of Burgos, Burgos, Spain

    Álvaro Herrero

  2. Department of Civil Engineering, Escuela Politécnica Superior, University of Burgos, Burgos, Spain

    Bruno Baruque

  3. Technological Institute of Castilla y León, Burgos, Spain

    Javier Sedano

  4. University of Salamanca, Salamanca, Spain

    Héctor Quintián

  5. Plaza de la Merced S/N, University of Salamanca, Salamanca, Spain

    Emilio Corchado

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© 2015 Springer International Publishing Switzerland

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Peinado, A., García, A.O. (2015). Reducing the Key Space of an Image Encryption Scheme Based on Two-Round Diffusion Process. In: Herrero, Á., Baruque, B., Sedano, J., Quintián, H., Corchado, E. (eds) International Joint Conference. CISIS 2015. Advances in Intelligent Systems and Computing, vol 369. Springer, Cham. https://doi.org/10.1007/978-3-319-19713-5_38

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  • DOI: https://doi.org/10.1007/978-3-319-19713-5_38

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-19712-8

  • Online ISBN: 978-3-319-19713-5

  • eBook Packages: EngineeringEngineering (R0)

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