EASB: ECC based aggregate signature without bilinear pairing for blockchain

EASB: ECC based aggregate signature without bilinear pairing for blockchain

연구 분야: Verification

학회: Multimedia Tools and Applications

An aggregate signature is a digital signature where different individual signatures from various messages create a single short signature. It is helpful to reduce storage cost, bandwidth, and quick verification, which is attractive for different blockchain applications. However, several aggregate signatures depend on pairing-based cryptography, which produces high computation costs. We propose an aggregate signature that is pairing-free and depends upon ECDSA. The scheme is the first aggregate signature scheme that is computationally efficient and does not require extra parameters and costs for signature aggregation and verification in blockchain applications. Moreover, the secure secp256k1 elliptic curve is used for group element generation and ECDSA for signature generation. Besides this, Security proof follows the random oracle model, and the hardness is ECDLP. Application of this scheme requires 90 less time than pairing-based schemes and 70 less than pairing-free schemes, especially for Blockchain.