Method and Apparatus of Lattice-based Linearly Homomorphic Signature with Multiple Signers under Cloud System

摘要

Disclosed are a method and an apparatus of a lattice-based linearly homomorphic signature for a group signer under a cloud environment. The method of a lattice-based linearly homomorphic signature for a group signer under a cloud environment comprises the following steps: a group manager receives a message to sign; the group manager generates a modified message adding an error to the received message; and the group manager distributes the modified message to each of a plurality of signers.