1 From Digital to Homomorphic Signature Schemes 1.1 Digital Signatures1.2 Digital Signature Schemes Security Definition1.2.1 Known-Message Attack1.2.2 Chosen-Message Attack 1.2.3 Adaptive Chosen-Message Attack1.3 Homomorphic Signature Schemes 1.4 Homomorphic Signature Schemes Security Definition2 Homomorphic Signature Schemes2.1 Homomorphic Signature Schemes for the Single-User Scenario2.1.1 Linearly Homomorphic Signature Schemes2.1.2 Homomorphic...