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Ruiz Rodriguez, Alexandre (Data de defensa: 2013-07-22)
The present thesis deals with primitives related to the eld of distributed cryptography. First, we study signcryption schemes, which provide at the same time the functionalities of encryption and ...
Vena Cros, Lluís (Data de defensa: 2012-07-02)
This thesis presents some contributions in additive combinatorics and arithmetic Ramsey theory. More specifically, it deals with the interaction between combinatorics, number theory and additive ...