Abstract— Aggregate signatures enable the sensor nodes of
Industrial Internet of Things to send their signatures to the
aggregator to realize signature compression. Before being stored
in the data center, sensitive data and non-sensitive data should
adopt different data processing methods in the process of sensor
data fusion. In the high security analysis scenario of Industrial
Internet of Things, only the verifier with a specified high
security level can verify the resulting aggregate signature. So far,
no one has explored how to ensure sensitive data privacy in
the designated-verifier aggregate signatures. Motivated by it,
this paper proposes a designated-verifier aggregate signature
scheme (named DVAS) based on permissioned blockchain to
achieve sensitive data privacy. In this scheme, the aggregator
can be used not only to aggregate signatures, but also to sanitize
data. Through smart contracts, the aggregator can sanitize the
sensitive data according to the contract, and convert the original
signature of the sensitive data into a valid signature. Therefore,
DVAS can achieve elastic sensitive data privacy, not limited to
encryption operations. The security attributes of DVAS include
condition服务器托管网al anonymity, unforgeability, immutability and protecting data privacy. At the same time, DVAS realizes accountability
through signature verification. Finally, the formal security proof,
performance evaluation and experiments indicate that DVAS is
secure, effective an服务器托管网d practical for Industrial Internet of Things.
Index Terms— Aggregate signature, designated-verifier, Industrial Internet of Things, permissioned blockchain, sensitive data
privacy.
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