陈文娟2,,,
张永洁2,
张雪微2,
王彩芬3
1.西北师范大学 兰州 730070
2.甘肃卫生职业学院 兰州 730000
3.深圳技术大学 深圳 518118
基金项目:国家自然科学基金(61662069)，甘肃省高等学校科研项目(2017A-003, 2018A-207)
详细信息
作者简介:张玉磊：男，1979年生，博士，副教授，研究方向为密码学与信息安全
陈文娟：女，1993年生，硕士生，研究方向为密码学与信息安全
张永洁：女，1978年生，硕士，副教授，研究方向为密码学与信息安全
张雪微：女，1995年生，硕士生，研究方向为密码学与信息安全
王彩芬：女，1963年生，博士，教授，研究方向为密码学与信息安全
通讯作者:陈文娟 497604722@qq.com
中图分类号:TP309计量
文章访问数:950
HTML全文浏览量:369
PDF下载量:58
被引次数:0
出版历程
收稿日期:2019-09-29
修回日期:2020-04-23
网络出版日期:2020-05-28
刊出日期:2020-11-16
Certificateless Puklic Key Encryption With Equality Test of Supporting Keyword Search
Yulei ZHANG1,Wenjuan CHEN2,,,
Yongjie ZHANG2,
Xuewei ZHANG2,
Caifen WANG3
1. Northwest Normal University, Lanzhou 730070, China
2. Gansu Health Vocational, Lanzhou 730000, China
3. Shenzhen Technology University, Shenzhen 518118, China
Funds:The National Natural Science Foundation of China(61662069), The Higher Educational Scientific Research Foundation of Gansu Province (2017A-003, 2018A-207)
摘要
摘要:公钥加密等值测试(PKEET)可以实现云环境下不同公钥加密数据之间的密文等值比较，即不对密文解密的情况下测试两个密文对应的明文是否一致。但是，密文等值测试加密不提供关键字密文搜索功能。已有密文等值测试加密方案直接以消息生成陷门作为等值测试的凭证，测试的准确度不高，搜索效率较低。针对此问题，该文首先提出了支持关键字搜索的无证书密文等值测试加密(CLEETS)方案。方案通过关键字检索判断是否包含自己需要的信息，根据判断结果选择执行等值测试，从而避免无效测试。然后，在随机预言机模型下证明该方案满足适应性选择关键词不可区分性。最后，对方案进行功能和效率对比。对比结果表明，该文方案的计算代价略高，但是方案在密文等值测试加密中实现了关键字的检索功能，弥补了效率低的不足。
关键词:无证书公钥密码/
可搜索加密/
密文等值测试
Abstract:Public Key Encryption with Equality Test (PKEET) is an important method to achieve the equality test of ciphertexts which are generated by the different public key aiming to the same plaintext in cloud environment. In other words, it can tests the plaintext corresponding to the two ciphertext’s equivalence without decrypting the ciphertext, but does not supply the searchable function. Nowadays, the existing PKEET scheme takes directly the message to generate a trapdoor as the proof of equality test, which has low test accuracy and search efficiency. To solve the above problems, a certificateless public key encryption with equality test scheme supporting keyword search (CertificateLess Equality test EncrypTion with keyword Search, CLEETS) is proposed. The scheme determines whether it contains information needed by the user through the keyword search, then performs the equality test according to the search result, which can avoid invalid test. Then, it is proved that the scheme satisfies the indistinguishability of adaptive selection of keywords under the random oracle model. Finally, the comparison analyses of function and efficiency are performed. The results indicate the computation cost of CLEETS scheme is less efficient. Fortunately, it can realizes the function of keyword search in encryption with equality test, which can remedies the inefficiency.
Key words:Certificateless public key cryptography/
Encryption with keyword search/
Equality test
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