In this project, a new threshold signing scheme for RSA has been proposed. The scheme does not require a trusted third party and no secure information is leaked throughout the protocol. The time and storage complexity of the protocol is linear in the number of parties and no restriction is placed on the RSA moduli. Combined with the n-out-of-n key generation protocol of Boneh and Franklin, one ...

We study third-harmonic generation (THG) in an excitonic insulator (EI) described a two-band correlated electron model. Employing the perturbative expansion with respect to external electric field, we derive THG susceptibility taking into account collective dynamics of order parameter. In inversion-symmetric EI, parameter motion is activated at second field and its effects arise THG. find three...