一種可證安全的異構(gòu)聚合簽密方案
doi: 10.11999/JEIT160829 cstr: 32379.14.JEIT160829
基金項目:
國家自然科學(xué)基金(61562077, 61462077, 61662071),西北師范大學(xué)青年教師科研提升計劃(NWNU-LKQN-13-12)
A Provable Aggregate Signcryption for Heterogeneous Systems
Funds:
The National Natural Science Foundation of China (61562077, 61462077, 61662071), The Young Teachers Scientific Research Ability Promotion Program of Northwest Normal University (NWNU-LKQN-13-12)
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摘要: 異構(gòu)簽密可實現(xiàn)不同安全域之間數(shù)據(jù)通信的機密性、認(rèn)證性和不可偽造性。分析現(xiàn)有的異構(gòu)簽密方案,發(fā)現(xiàn)它們僅是針對單個消息而設(shè)計的,計算效率普遍較低,不適合大數(shù)據(jù)環(huán)境下的網(wǎng)絡(luò)通信系統(tǒng)。該文提出一個異構(gòu)的聚合簽密方案,該方案不但可以實現(xiàn)單個消息的簽密驗證,而且可以實現(xiàn)多個消息的聚合驗證,并且驗證需要的雙線性對個數(shù)固定,與所簽密消息的個數(shù)無關(guān)。同時,在隨機預(yù)言模型下,證明了方案的機密性和不可偽造性分別基于q雙線性Diffie-Hellman逆問題和離散對數(shù)問題。數(shù)值結(jié)果表明,該方案與現(xiàn)有方案相比在計算效率和傳輸效率上有著極大的提高。
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關(guān)鍵詞:
- 聚合簽密 /
- 異構(gòu)系統(tǒng) /
- 雙線性Diffie-Hellman逆問題 /
- 離散對數(shù)問題
Abstract: Heterogeneous signcryption can ensure the confidentiality, authentication and unforgeability of information transmission of cross cryptograph environment. Through analyzing some existing heterogeneous signcryption schemes, it is found that they can only be applicable to single message of signcryption. In order to improve the efficiency of computation and transmission in heterogeneous systems, a provable multi-message aggregate signcryption is proposed. In the new scheme, the pairing numbers are constant in verification phase, it not depends on the number of signcryption message. Moreover, based on the assumption of q-bilinear Diffie- Hellman inversion issue and Discrete logarithm, in the random oracle model, it is proved that the new scheme satisfies the properties of confidentiality and unforgeability. Furthermore, theoretical analysis and experimental results demonstrate that the computation overhead efficiency of the proposed scheme is better than the existing one. -
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