Abstract
We investigate two schemes based on the word problem on groups. From a complexity-theoretic point of view, we show that the problems underlying those schemes are equivalent. We then present a reaction attack on one of the schemes, thus easily transposed to the other. The attack, besides its efficiency, permits to recover an equivalent secret key.
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Communicated by P. Wild.
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Levy-dit-Vehel, F., Perret, L. Security analysis of word problem-based cryptosystems. Des. Codes Cryptogr. 54, 29–41 (2010). https://doi.org/10.1007/s10623-009-9307-x
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DOI: https://doi.org/10.1007/s10623-009-9307-x