Outsourced Decentralized Multi-Authority Attribute Based Signature and Its Application in IoT

IoT (Internet of things) devices often collect data and store the in cloud for sharing further processing; This collection, sharing, processing will inevitably encounter secure access authentication issues. Attribute based signature (ABS), which utilizes signer’s attributes to generate private keys, plays a competent role identity privacy preservation. In ABS, there are multiple authorities that issue different keys signers on their various attributes, central authority is usually established manage all these attribute authorities. However, one security concern if compromised, whole system be broken. this paper, we present an outsourced decentralized multi-authority (ODMA-ABS) scheme. The proposed ODMA-ABS achieves stronger authority-corruption resistance than existing schemes can achieve. addition, overhead reduced by outsourcing expensive computation signing server. We extensive analysis experimental simulation also propose control scheme ODMA-ABS.