Linearly Homomorphic Structure-Preserving Signatures and their Applications

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Provided by: Springer Healthcare
Topic: Security
Format: PDF
Structure-Preserving Signatures (SPS) are signature schemes where messages, signatures and public keys all consist of elements of a group over which a bilinear map is efficiently computable. This property makes them useful in cryptographic protocols as they nicely compose with other algebraic tools (like the celebrated groth-sahai proof systems). In this paper, the authors consider SPS systems with homomorphic properties and suggest applications that have not been provided before (in particular, not by employing ordinary SPS).
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