Geodesic
Public-key cryptography and invariant theory
Zapiski Nauchnykh Seminarov POMI, Computational complexity theory. Part VII, Tome 293 (2002), pp. 26-38 
D. Yu. Grigor'ev. Public-key cryptography and invariant theory. Zapiski Nauchnykh Seminarov POMI, Computational complexity theory. Part VII, Tome 293 (2002), pp. 26-38. http://geodesic.mathdoc.fr/item/ZNSL_2002_293_a1/
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     author = {D. Yu. Grigor'ev},
     title = {Public-key cryptography and invariant theory},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {26--38},
     year = {2002},
     volume = {293},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2002_293_a1/}
}
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

Public-key cryptosystems are suggested based on invariants of groups. We give also an overview of known cryptosystems which involve groups.