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Journal of Applied Sciences

Year: 2013 | Volume: 13 | Issue: 6 | Page No.: 768-789
DOI: 10.3923/jas.2013.768.789

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Authors


Ashwak Mahmood Alabaichi

Country: Malaysia

Ramlan Mahmood

Country: Malaysia

Faudziah Ahmad

Country: Malaysia

Mohammed S. Mechee


Keywords


  • randomness test
  • Block cipher
  • blowfish algorithm
  • ECB mode
  • CBC mode
Research Article

Randomness Analysis on Blowfish Block Cipher Using ECB and CBC Modes

Ashwak Mahmood Alabaichi, Ramlan Mahmood, Faudziah Ahmad and Mohammed S. Mechee
Randomness of the output is one of the significant factors in measuring the security of any cryptographic algorithm. Non-random block cipher is vulnerable to any type of attack. This paper presents the National Institute of Standard and Technology (NIST) statistical tests of the Blowfish algorithm to investigate its randomness. Blowfish algorithm with Electronic Codebook (ECB) and Cipher Block Chaining (CBC) modes were conducted for these tests. In addition, comparisons between them were introduced. The analysis showed that Blowfish algorithm with ECB mode was inappropriate with data such as text and image files which have large strings of identical bytes. This inconsistency is due to the majority of the 188 statistical tests of NIST statistical tests failing in all rounds.
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How to cite this article

Ashwak Mahmood Alabaichi, Ramlan Mahmood, Faudziah Ahmad and Mohammed S. Mechee, 2013. Randomness Analysis on Blowfish Block Cipher Using ECB and CBC Modes. Journal of Applied Sciences, 13: 768-789.

DOI: 10.3923/jas.2013.768.789

URL: https://scialert.net/abstract/?doi=jas.2013.768.789

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