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A novel stream encryption scheme with avalanche effect

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  • Lequan Min
  • Guanrong Chen

Abstract

This paper proposes a novel stream encryption scheme with avalanche effect (SESAE). Using this scheme and an ideal pseudorandom number generator (PRNG) to generate d-bit segment binary key streams, one can encrypt a plaintext such that by using any key stream generated from a different seed to decrypt the ciphertext, the decrypted plaintext will become an avalanche-like text which has 2 d − 1 consecutive one’s with a high probability. As a cost, the required bits of the ciphertext are d times those of the plaintext. A corresponding avalanche-type encryption theorem is established. Two chaotic 12-bit segment PRNGs are designed. A generalized FIPS140 test and SESAE test for the two chaotic PRNGs, RC4 12-bit segment PRNG and 12-bit segment Matlab PRNG are implemented. The SESAE tests for 16-bit segment PRNGs are also compared. The results suggest that those PRNGs are able to generate the SESAEs which are similar to those generated via ideal PRNGs. Copyright The Author(s) 2013

Suggested Citation

  • Lequan Min & Guanrong Chen, 2013. "A novel stream encryption scheme with avalanche effect," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 86(11), pages 1-13, November.
    • Handle: RePEc:spr:eurphb:v:86:y:2013:i:11:p:1-13:10.1140/epjb/e2013-40199-7
    DOI: 10.1140/epjb/e2013-40199-7
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    Statistical and Nonlinear Physics;

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