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ENGINEERING Information Technology & Electronic Engineering

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Low-computation certificateless hybrid signcryption scheme

Author(s): Hui-fang Yu, Bo Yang
Affiliation(s): School of Computer, Qinghai Normal University, Xining 810008, China; more
Corresponding email(s): yuhuifang@qhnu.edu.cn
Key Words: Hybrid signcryption; Scalar multiplication; Certificateless cryptosystem; Provable security

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Hui-fang Yu, Bo Yang. Low-computation certificateless hybrid signcryption scheme[J]. Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/FITEE.1601054

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doi="https://doi.org/10.1631/FITEE.1601054"
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doi="https://doi.org/10.1631/FITEE.1601054"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: Hybrid signcryption is an important technique signcrypting bulk data using symmetric encryption. In this paper, we apply the technique of certificateless hybrid signcryption to an elliptic-curve cryptosystem, and construct a low-computation certificateless hybrid signcryption scheme. In the random oracle model, this scheme is proven to have indistinguishability against adaptive chosen-ciphertext attacks (IND-CCA2) under the elliptic-curve computation Diffie-Hellman assumption. Also, it has a strong existential unforgeability against adaptive chosen-message attacks (sUF-CMA) under the elliptic-curve discrete logarithm assumption. Analysis shows that the cryptographic algorithm does not rely on pairing operations and is much more efficient than other algorithms. In addition, it suits well to applications in environments where resources are constrained, such as wireless sensor networks and ad hoc networks.

低计算复杂度的无证书混合签密方案

概要：混合签密是一种可以签密任意长度消息的重要技术。本文将无证书混合签密技术应用于椭圆曲线密码系统，构造了一个低计算复杂度的无证书混合签密方案。随机预言模型下，该方案在ECCDH（elliptic-curve computation diffie-Hellman）被证明具有IND-CCA2（indistinguishability against adaptive chosen-ciphertext attacks）安全性，而且在ECDL（elliptic-curve discrete logarithm）假设下具有sUF-CMA（strong existential unforgeability against adaptive chosen-message attacks）安全性。分析表明该密码算法没有双线性对操作，比其他算法更高效。此外，它适合于资源受限的环境，比如无线传感器网络和ad hoc网络。

关键词组：混合签密；标量乘；无证书密码系统；可证安全性

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Reference

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低计算复杂度的无证书混合签密方案

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