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Paper detail

Cryptosystems Using Automorphisms of Finitely Generated Free Groups

This paper introduces a newly developed private key cryptosystem and a public key cryptosystem. In the first one, each letter is encrypted with a different key. Therefore, it is a kind of a one-time pad. The second one is inspired by the ElGamal cryptosystem. Both presented cryptosystems are based on automorphisms of free groups. Given a free group $F$ of finite rank, the automorphism group $Aut(F)$ can be generated by Nielsen transformations, which are the basis of a linear technique to study free groups and general infinite groups. Therefore Nielsen transformations are introduced.

preprint2016arXivOpen access
Anja I. S. MoldenhauerGerhard Rosenberger
math.GR
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Anja I. S. MoldenhauerGerhard Rosenberger

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