Multi-hop sanitizable signature for collaborative edge computing

Edge computing is a significant paradigm that can provide message aggregation and message verification with low time delay. To overcome the limitation of computation ability in one edge node, collaborative edge computing is proposed. Each edge node only needs to verify a subset of the message integrity, which is beneficial when incoming messages are large. In this paper, we propose an Elliptic Curve Based Multi-hop Sanitizable Signature (ECMSS), which can provide both signature aggregation and subset verification. The theoretical analysis shows that ECMSS can achieve unforgeability and non-transferability. Concurrently, the experimental results show that our proposed scheme achieves high efficiency and guaranteed security.