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    题名: Practical Predicate Encryption for Inner Product
    作者: 左瑞麟;曾一凡
    Tso, Raylin;Tseng, Yi-Fan
    Liu, Zi-Yuan
    贡献者: 資科系
    关键词: Predicate Encryption;Inner Product Encryption;Constant-size Private Key;Efficient Decryption;Constant Pairing Computations
    日期: 2020-07
    上传时间: 2021-12-09 16:10:21 (UTC+8)
    摘要: Inner product encryption is a powerful cryptographic primitive, where a private key and a ciphertext are both associated with a predicate vector and an attribute vector, respectively. A successful decryption requires the inner product of the predicate vector and the attribute vector to be zero. Most of the existing inner product encryption schemes suffer either long private key or heavy decryption cost. In this manuscript, an efficient inner product encryption is proposed. The length for a private key is only an element in G and an element in Zp. Besides, only one pairing computation is needed for decryption. Moreover, both formal security proof and implementation result are demonstrated in this manuscript. To the best of our knowledge, our scheme is the most efficient one in terms of the private key length and the number of pairings computation for decryption.
    關聯: Proceedings of Secrypt 2020, Fordham University, pp.553-558
    数据类型: conference
    DOI 連結: https://doi.org/10.5220/0009804605530558
    DOI: 10.5220/0009804605530558
    显示于类别:[資訊科學系] 會議論文

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