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Asked: 2026-05-17T16:29:57+00:00

I am doing a security review on a system. From one part of the

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I am doing a security review on a system.

From one part of the system to another, information is sent using an encrypted string.

This string is over 400 characters long, but within it are 4 sets of 10 identical characters. I am assuming that the data that was encrypted also has this pattern, for example the word “parameters”.

I have tested encrypting a string containing several identical strings with DES, but do not get the same pattern.

Question is: Is there an encryption method that would produce this result. Or have the parts been encrypted seperatly and conncatinated?

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1 Answer

  1. Editorial Team

    An encryption system with short key length and no correlation between blocks (e.g. ECB mode) would encrypt short runs of identical plain text identically. It could also just be coincidence, of course.

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