Establishing a Key Hierarchy for Conditional Access without Encryption.

1996 - Jörg Schwenk,

Proc. IFIP Communications and Multimedia Security 1996, Chapman & Hall, London.

Public Key Encryption and Signature Schemes Based on Polynomials over Zn.

1996 - Jörg Schwenk, J. Eisfeld

Proc. EUROCRYPT 96, Ed. Ueli Maurer, Springer LNCS 1070 (1996), 60-71.