Abstract
Efficiency and privacy are the key aspects in content extraction signatures. In this study, we proposed a Secure and Efficient and Certificateless Content Extraction Signature with Privacy Protection (SECCESPP) in which scalar multiplication of elliptic curves is used to replace inefficient bilinear pairing of certificateless public key cryptosystem, and the signcryption idea is borrowed to implement privacy protection for signed messages. The correctness of the SECCESPP scheme is demonstrated by the consistency of the message and the accuracy of the equation. The security and privacy of the SECCESPP scheme are demonstrated based on the elliptic curve discrete logarithm problem in the random oracle model and are formally analyzed with the formal analysis tool ProVerif, respectively. Theory and experimental analysis show that the SECCESPP scheme is more efficient than other schemes.
Highlights
Content extraction signatures have been widely used to protect electronic medical records and electronic commerce security, in which the signature verifier can verify the authenticity of the extracted message without knowing the entire signed message [1]
The operations currently available for elliptic curves include exponential operation, scalar multiplication, bilinear pairing and a hash function According to references [8,9], scalar multiplication is the most efficient operation and is a good option to replace inefficient bilinear pairing in certificateless public key cryptosystem
The main works is presented as follows: 1. Scalar multiplication is used on elliptic curves to replace inefficient bilinear pairing in a certificateless public key cryptosystem, and the signcryption idea from data encryption approach is borrowed to implement privacy for signed message
Summary
Content extraction signatures have been widely used to protect electronic medical records and electronic commerce security, in which the signature verifier can verify the authenticity of the extracted message without knowing the entire signed message [1]. Efficiency and privacy protection are the key aspects of a content extraction signature. Most content extraction signature schemes were developed using the traditional public key cryptosystem [2,3,4,5] or the identity-based public key cryptosystem [6,7,8,9,10]. Certificateless public key cryptosystem are based on costly bilinear paring of elliptic curves. The efficiency of such an approach is low. Scalar multiplication is used on elliptic curves to replace inefficient bilinear pairing in a certificateless public key cryptosystem, and the signcryption idea from data encryption approach is borrowed to implement privacy for signed message.
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