Efficient Pairing-Free Attribute-Based Blind Signature Scheme Based on Ordered Binary Decision Diagram

Attribute-based blind signature is used to realize the of messages by multiple people, and it suitable for electronic payment services in cloud. Most existing attribute-based schemes have complex bilinear pairing operations process verification, which leads low algorithm efficiency. To solve this problem, study, an efficient pairing-free scheme based on ordered binary decision diagram proposed, security analysis new given under difficulty elliptic curve discrete logarithm problem (ECDLP). The proposed cryptography (ECC). In scheme, scalar multiplication curve, relatively lightweight, replace with a large computational cost traditional schemes. overhead verification processes reduced, making solution more resource-constrained cloud terminal user scenarios. On other hand, order improve efficiency expressive computationally (OBDD) structure construct access signer. OBDD can simultaneously support positive negative values attributes at same time. Compared schemes, has better performance storage, meets needs end users.