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In this paper, a variant of (t, n) threshold secret sharing scheme is realized using a lattice model. Due to the potential quantum attacks in the future, we need to construct a secure channels for transmitting secret shares. Such channels could be modeled by a lattice based public key cryptosystem whose security is based on the worst case hardness of lattice problems. Therefore, we propose a lattice...
Matrix cryptosystems, like Hill cipher, are resistant to frequency analysis. The key is a non-singular k times k matrix, for example 3 times 3 matrix K. In this paper, we propose simple criteria to generate a modular non-singular key-matrix for matrix ciphers fast. We apply these results to cryptography and computer security. In this paper, we present a mutualauthentication protocol based on Hamiltonian...
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