{"id":"https://openalex.org/W3213496527","doi":"https://doi.org/10.1109/jiot.2021.3126468","title":"Time-Controlled Hierarchical Multikeyword Search Over Encrypted Data in Cloud-Assisted IoT","display_name":"Time-Controlled Hierarchical Multikeyword Search Over Encrypted Data in Cloud-Assisted IoT","publication_year":2021,"publication_date":"2021-11-09","ids":{"openalex":"https://openalex.org/W3213496527","doi":"https://doi.org/10.1109/jiot.2021.3126468","mag":"3213496527"},"language":"en","primary_location":{"id":"doi:10.1109/jiot.2021.3126468","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2021.3126468","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Internet of Things Journal","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://ink.library.smu.edu.sg/sis_research/7826","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100392652","display_name":"Tong Liu","orcid":"https://orcid.org/0000-0002-5581-674X"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I5343935","display_name":"Guilin University of Electronic Technology","ror":"https://ror.org/05arjae42","country_code":"CN","type":"education","lineage":["https://openalex.org/I5343935"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tong Liu","raw_affiliation_strings":["School of Cyber Engineering, Xidian University, Xi’an, China","Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, China"],"raw_orcid":"https://orcid.org/0000-0002-5581-674X","affiliations":[{"raw_affiliation_string":"School of Cyber Engineering, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, China","institution_ids":["https://openalex.org/I5343935"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102885964","display_name":"Yinbin Miao","orcid":"https://orcid.org/0000-0001-5437-3572"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I5343935","display_name":"Guilin University of Electronic Technology","ror":"https://ror.org/05arjae42","country_code":"CN","type":"education","lineage":["https://openalex.org/I5343935"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yinbin Miao","raw_affiliation_strings":["School of Cyber Engineering, Xidian University, Xi’an, China","Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, China"],"raw_orcid":"https://orcid.org/0000-0001-5437-3572","affiliations":[{"raw_affiliation_string":"School of Cyber Engineering, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, China","institution_ids":["https://openalex.org/I5343935"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001746807","display_name":"Kim\u2010Kwang Raymond Choo","orcid":"https://orcid.org/0000-0001-9208-5336"},"institutions":[{"id":"https://openalex.org/I45438204","display_name":"The University of Texas at San Antonio","ror":"https://ror.org/01kd65564","country_code":"US","type":"education","lineage":["https://openalex.org/I45438204"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kim-Kwang Raymond Choo","raw_affiliation_strings":["Department of Information Systems and Cyber Security, The University of Texas at San Antonio, San Antonio, TX, USA"],"raw_orcid":"https://orcid.org/0000-0001-9208-5336","affiliations":[{"raw_affiliation_string":"Department of Information Systems and Cyber Security, The University of Texas at San Antonio, San Antonio, TX, USA","institution_ids":["https://openalex.org/I45438204"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100325334","display_name":"Hongwei Li","orcid":"https://orcid.org/0000-0002-1961-7946"},"institutions":[{"id":"https://openalex.org/I150229711","display_name":"University of Electronic Science and Technology of China","ror":"https://ror.org/04qr3zq92","country_code":"CN","type":"education","lineage":["https://openalex.org/I150229711"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hongwei Li","raw_affiliation_strings":["Department of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China"],"raw_orcid":"https://orcid.org/0000-0002-1961-7946","affiliations":[{"raw_affiliation_string":"Department of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China","institution_ids":["https://openalex.org/I150229711"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5058120371","display_name":"Ximeng Liu","orcid":"https://orcid.org/0000-0002-4238-3295"},"institutions":[{"id":"https://openalex.org/I80947539","display_name":"Fuzhou University","ror":"https://ror.org/011xvna82","country_code":"CN","type":"education","lineage":["https://openalex.org/I80947539"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ximeng Liu","raw_affiliation_strings":["Key Laboratory of Information Security of Network Systems, College of Mathematics and Computer Science, Fuzhou University, Fuzhou, China"],"raw_orcid":"https://orcid.org/0000-0002-4238-3295","affiliations":[{"raw_affiliation_string":"Key Laboratory of Information Security of Network Systems, College of Mathematics and Computer Science, Fuzhou University, Fuzhou, China","institution_ids":["https://openalex.org/I80947539"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100693146","display_name":"Xiangdong Meng","orcid":"https://orcid.org/0000-0002-6349-6205"},"institutions":[{"id":"https://openalex.org/I4210132990","display_name":"State Key Laboratory of Cryptology","ror":"https://ror.org/02pn5rj08","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210132990"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiangdong Meng","raw_affiliation_strings":["Henan Key Laboratory of Network Cryptography Technology, Zhengzhou, China","State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Henan Key Laboratory of Network Cryptography Technology, Zhengzhou, China","institution_ids":["https://openalex.org/I4210132990"]},{"raw_affiliation_string":"State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou, China","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5001712801","display_name":"Robert H. Deng","orcid":"https://orcid.org/0000-0003-3491-8146"},"institutions":[{"id":"https://openalex.org/I79891267","display_name":"Singapore Management University","ror":"https://ror.org/050qmg959","country_code":"SG","type":"education","lineage":["https://openalex.org/I79891267"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Robert H. Deng","raw_affiliation_strings":["School of Information Systems, Singapore Management University, Singapore"],"raw_orcid":"https://orcid.org/0000-0003-3491-8146","affiliations":[{"raw_affiliation_string":"School of Information Systems, Singapore Management University, Singapore","institution_ids":["https://openalex.org/I79891267"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.3648,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.84649646,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"9","issue":"13","first_page":"11017","last_page":"11029"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":0.9944000244140625,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11614","display_name":"Cloud Data Security Solutions","score":0.9861000180244446,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.88161301612854},{"id":"https://openalex.org/keywords/ciphertext","display_name":"Ciphertext","score":0.6818891763687134},{"id":"https://openalex.org/keywords/encryption","display_name":"Encryption","score":0.6730537414550781},{"id":"https://openalex.org/keywords/access-control","display_name":"Access control","score":0.6605421900749207},{"id":"https://openalex.org/keywords/cloud-computing","display_name":"Cloud computing","score":0.6059129238128662},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.5193985104560852},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.5028385519981384},{"id":"https://openalex.org/keywords/tree","display_name":"Tree (set theory)","score":0.4741470217704773},{"id":"https://openalex.org/keywords/outsourcing","display_name":"Outsourcing","score":0.47123655676841736},{"id":"https://openalex.org/keywords/the-internet","display_name":"The Internet","score":0.4478437304496765},{"id":"https://openalex.org/keywords/cloud-storage","display_name":"Cloud storage","score":0.4427233338356018},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.43657535314559937},{"id":"https://openalex.org/keywords/server","display_name":"Server","score":0.43280211091041565},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.4154911935329437},{"id":"https://openalex.org/keywords/confidentiality","display_name":"Confidentiality","score":0.4145217537879944},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.14579755067825317}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.88161301612854},{"id":"https://openalex.org/C93974786","wikidata":"https://www.wikidata.org/wiki/Q1589480","display_name":"Ciphertext","level":3,"score":0.6818891763687134},{"id":"https://openalex.org/C148730421","wikidata":"https://www.wikidata.org/wiki/Q141090","display_name":"Encryption","level":2,"score":0.6730537414550781},{"id":"https://openalex.org/C527821871","wikidata":"https://www.wikidata.org/wiki/Q228502","display_name":"Access control","level":2,"score":0.6605421900749207},{"id":"https://openalex.org/C79974875","wikidata":"https://www.wikidata.org/wiki/Q483639","display_name":"Cloud computing","level":2,"score":0.6059129238128662},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.5193985104560852},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.5028385519981384},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.4741470217704773},{"id":"https://openalex.org/C46934059","wikidata":"https://www.wikidata.org/wiki/Q61515","display_name":"Outsourcing","level":2,"score":0.47123655676841736},{"id":"https://openalex.org/C110875604","wikidata":"https://www.wikidata.org/wiki/Q75","display_name":"The Internet","level":2,"score":0.4478437304496765},{"id":"https://openalex.org/C2777059624","wikidata":"https://www.wikidata.org/wiki/Q914359","display_name":"Cloud storage","level":3,"score":0.4427233338356018},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.43657535314559937},{"id":"https://openalex.org/C93996380","wikidata":"https://www.wikidata.org/wiki/Q44127","display_name":"Server","level":2,"score":0.43280211091041565},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.4154911935329437},{"id":"https://openalex.org/C71745522","wikidata":"https://www.wikidata.org/wiki/Q2476929","display_name":"Confidentiality","level":2,"score":0.4145217537879944},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.14579755067825317},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/jiot.2021.3126468","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2021.3126468","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Internet of Things Journal","raw_type":"journal-article"},{"id":"pmh:oai:ink.library.smu.edu.sg:sis_research-8829","is_oa":true,"landing_page_url":"https://ink.library.smu.edu.sg/sis_research/7826","pdf_url":null,"source":{"id":"https://openalex.org/S4306401925","display_name":"Singapore Management University Institutional Knowledge (InK) (Singapore Management University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I79891267","host_organization_name":"Singapore Management University","host_organization_lineage":["https://openalex.org/I79891267"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://doi.org/10.1109/JIOT.2021.3126468","raw_type":"Journal Article"}],"best_oa_location":{"id":"pmh:oai:ink.library.smu.edu.sg:sis_research-8829","is_oa":true,"landing_page_url":"https://ink.library.smu.edu.sg/sis_research/7826","pdf_url":null,"source":{"id":"https://openalex.org/S4306401925","display_name":"Singapore Management University Institutional Knowledge (InK) (Singapore Management University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I79891267","host_organization_name":"Singapore Management University","host_organization_lineage":["https://openalex.org/I79891267"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://doi.org/10.1109/JIOT.2021.3126468","raw_type":"Journal Article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G564380355","display_name":"\u9690\u79c1\u4fdd\u62a4\u7684\u4e91\u52a0\u5bc6\u6570\u636e\u5171\u4eab\u4e0e\u5206\u6790\u5173\u952e\u6280\u672f\u7814\u7a76","funder_award_id":"62072361","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6506919367","display_name":null,"funder_award_id":"JB211505","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":44,"referenced_works":["https://openalex.org/W34785529","https://openalex.org/W49794705","https://openalex.org/W98478173","https://openalex.org/W1485801301","https://openalex.org/W1512194687","https://openalex.org/W1515933843","https://openalex.org/W1656279256","https://openalex.org/W1851414966","https://openalex.org/W1993341076","https://openalex.org/W1998930836","https://openalex.org/W2025514522","https://openalex.org/W2028161339","https://openalex.org/W2052267638","https://openalex.org/W2054701320","https://openalex.org/W2056949817","https://openalex.org/W2067318305","https://openalex.org/W2080574324","https://openalex.org/W2089607820","https://openalex.org/W2099739670","https://openalex.org/W2116556172","https://openalex.org/W2122590785","https://openalex.org/W2142801550","https://openalex.org/W2145426052","https://openalex.org/W2147096042","https://openalex.org/W2147929033","https://openalex.org/W2160262242","https://openalex.org/W2161214567","https://openalex.org/W2343785519","https://openalex.org/W2405356014","https://openalex.org/W2597901792","https://openalex.org/W2630165645","https://openalex.org/W2903949249","https://openalex.org/W2943600914","https://openalex.org/W2977014769","https://openalex.org/W2993938324","https://openalex.org/W3084544689","https://openalex.org/W3090998361","https://openalex.org/W3091517985","https://openalex.org/W3159761532","https://openalex.org/W6601427463","https://openalex.org/W6677607623","https://openalex.org/W6682311248","https://openalex.org/W6762350473","https://openalex.org/W6783419733"],"related_works":["https://openalex.org/W4387497383","https://openalex.org/W3183948672","https://openalex.org/W3173606202","https://openalex.org/W3110381201","https://openalex.org/W2948807893","https://openalex.org/W2778153218","https://openalex.org/W2758277628","https://openalex.org/W1531601525","https://openalex.org/W2796974977","https://openalex.org/W3217597870"],"abstract_inverted_index":{"Internet":[0],"of":[1,52,71],"Things":[2],"(IoT)":[3],"devices":[4,34],"and":[5,11,21,43,158],"systems":[6,14],"are":[7,74],"becoming":[8],"increasingly":[9],"commonplace,":[10],"as":[12],"such":[13],"scale":[15],"up,":[16],"so":[17],"do":[18,87],"the":[19,47,61,90],"computational":[20],"storage":[22],"requirements.":[23],"Hence,":[24],"one":[25],"recent":[26],"trend":[27],"is":[28,156,165],"to":[29,35,65,76,128,141],"outsource":[30],"data":[31,44],"from":[32],"IoT":[33],"remote":[36],"systems.":[37],"To":[38],"facilitate":[39],"both":[40],"ciphertext":[41],"retrieval":[42],"confidentiality":[45],"in":[46,60,93,113],"outsourced":[48],"data,":[49],"a":[50,69,118,125,137],"number":[51,70],"searchable":[53],"encryption":[54],"(SE)":[55],"approaches":[56,85],"have":[57],"been":[58],"proposed":[59],"literature.":[62],"However,":[63],"due":[64],"limited":[66],"keyword":[67,77],"space,":[68],"SE":[72,84,105],"schemes":[73,106],"vulnerable":[75],"guessing":[78],"attacks":[79],"(KGAs).":[80],"In":[81,131],"addition,":[82],"existing":[83,104],"generally":[86],"not":[88],"consider":[89],"hierarchical":[91,120,147],"structure":[92],"which":[94],"users":[95],"at":[96],"different":[97,143],"levels":[98],"require":[99],"varying":[100],"access":[101,110,144],"privileges.":[102],"Furthermore,":[103],"seldom":[107],"provide":[108],"time-controlled":[109,119],"control.":[111],"Therefore,":[112],"this":[114],"article,":[115],"we":[116,134],"propose":[117],"multikeyword":[121],"search":[122],"by":[123],"using":[124],"double-server":[126],"architecture":[127],"mitigate":[129],"KGA.":[130],"our":[132,154,163],"approach,":[133],"also":[135],"build":[136],"public":[138],"key":[139],"tree":[140],"support":[142],"permissions":[145],"for":[146],"users.":[148],"Formal":[149],"security":[150],"analysis":[151],"shows":[152],"that":[153,162],"scheme":[155,164],"secure,":[157],"extensive":[159],"experiments":[160],"demonstrate":[161],"practical.":[166]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}