Noncommutative Polly Cracker-type cryptosystems and chosen-ciphertext security

In: Preprint. Available online: http://eprint.iacr.org/2008/514, 2007

Authors

• T. Rai
• Stanislav Bulygin

Abstract

In this paper we consider chosen-ciphertext attacks against noncommutative Polly Cracker-type cryptosystems. We present several versions of these attacks, as well as techniques to counter them. First we introduce a chosen-ciphertext attack, which assumes a very simple private key. We then present generalizations of this attack which are valid in more general situations, and propose a simple but effective technique to counter these attacks. Finally, we show how this technique can also be used to counter the adaptive chosen-ciphertext attacks against noncommutative Polly Cracker-type cryptosystems.

BibTeX

 
@Article{ Rai.Bulygin07noncommutative, 
   title = { Noncommutative Polly Cracker-type cryptosystems and chosen-ciphertext security }, 
   author = { T. Rai and Stanislav Bulygin },    
   journal = { Preprint },           
   note = { Available online: http://eprint.iacr.org/2008/514 },  
   year = 2007, 
} 

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This publication belongs to the project KryFoVe.