{"id":"https://openalex.org/W4313477265","doi":"https://doi.org/10.1109/tifs.2022.3233780","title":"ePoSt: Practical and Client-Friendly Proof of Storage-Time","display_name":"ePoSt: Practical and Client-Friendly Proof of Storage-Time","publication_year":2023,"publication_date":"2023-01-01","ids":{"openalex":"https://openalex.org/W4313477265","doi":"https://doi.org/10.1109/tifs.2022.3233780"},"language":"en","primary_location":{"id":"doi:10.1109/tifs.2022.3233780","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tifs.2022.3233780","pdf_url":null,"source":{"id":"https://openalex.org/S61310614","display_name":"IEEE Transactions on Information Forensics and Security","issn_l":"1556-6013","issn":["1556-6013","1556-6021"],"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 Transactions on Information Forensics and Security","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5063722220","display_name":"Chengru Zhang","orcid":"https://orcid.org/0009-0001-8755-5206"},"institutions":[{"id":"https://openalex.org/I889458895","display_name":"University of Hong Kong","ror":"https://ror.org/02zhqgq86","country_code":"HK","type":"education","lineage":["https://openalex.org/I889458895"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Chengru Zhang","raw_affiliation_strings":["Department of Computer Science, The University of Hong Kong, Hong Kong, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science, The University of Hong Kong, Hong Kong, China","institution_ids":["https://openalex.org/I889458895"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100406122","display_name":"Xinyu Li","orcid":"https://orcid.org/0000-0003-2563-7529"},"institutions":[{"id":"https://openalex.org/I889458895","display_name":"University of Hong Kong","ror":"https://ror.org/02zhqgq86","country_code":"HK","type":"education","lineage":["https://openalex.org/I889458895"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Xinyu Li","raw_affiliation_strings":["Department of Computer Science, The University of Hong Kong, Hong Kong, China"],"raw_orcid":"https://orcid.org/0000-0003-2563-7529","affiliations":[{"raw_affiliation_string":"Department of Computer Science, The University of Hong Kong, Hong Kong, China","institution_ids":["https://openalex.org/I889458895"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5027786039","display_name":"Man Ho Au","orcid":"https://orcid.org/0000-0003-2068-9530"},"institutions":[{"id":"https://openalex.org/I889458895","display_name":"University of Hong Kong","ror":"https://ror.org/02zhqgq86","country_code":"HK","type":"education","lineage":["https://openalex.org/I889458895"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Man Ho Au","raw_affiliation_strings":["Department of Computer Science, The University of Hong Kong, Hong Kong, China"],"raw_orcid":"https://orcid.org/0000-0003-2068-9530","affiliations":[{"raw_affiliation_string":"Department of Computer Science, The University of Hong Kong, Hong Kong, China","institution_ids":["https://openalex.org/I889458895"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I889458895"],"apc_list":null,"apc_paid":null,"fwci":6.5582,"has_fulltext":false,"cited_by_count":15,"citation_normalized_percentile":{"value":0.96458887,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":"18","issue":null,"first_page":"1052","last_page":"1063"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11614","display_name":"Cloud Data Security Solutions","score":0.9998000264167786,"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"}},"topics":[{"id":"https://openalex.org/T11614","display_name":"Cloud Data Security Solutions","score":0.9998000264167786,"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"}},{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","score":0.9970999956130981,"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/T11181","display_name":"Advanced Data Storage Technologies","score":0.9886000156402588,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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":0.7978475093841553},{"id":"https://openalex.org/keywords/stateless-protocol","display_name":"Stateless protocol","score":0.736077070236206},{"id":"https://openalex.org/keywords/gas-meter-prover","display_name":"Gas meter prover","score":0.6853048205375671},{"id":"https://openalex.org/keywords/outsourcing","display_name":"Outsourcing","score":0.6154379844665527},{"id":"https://openalex.org/keywords/mathematical-proof","display_name":"Mathematical proof","score":0.5095000863075256},{"id":"https://openalex.org/keywords/protocol","display_name":"Protocol (science)","score":0.4440571069717407},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.401146799325943},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.23413482308387756},{"id":"https://openalex.org/keywords/state","display_name":"State (computer science)","score":0.18665790557861328},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.09383898973464966}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7978475093841553},{"id":"https://openalex.org/C103613024","wikidata":"https://www.wikidata.org/wiki/Q230924","display_name":"Stateless protocol","level":3,"score":0.736077070236206},{"id":"https://openalex.org/C159718280","wikidata":"https://www.wikidata.org/wiki/Q5526353","display_name":"Gas meter prover","level":3,"score":0.6853048205375671},{"id":"https://openalex.org/C46934059","wikidata":"https://www.wikidata.org/wiki/Q61515","display_name":"Outsourcing","level":2,"score":0.6154379844665527},{"id":"https://openalex.org/C108710211","wikidata":"https://www.wikidata.org/wiki/Q11538","display_name":"Mathematical proof","level":2,"score":0.5095000863075256},{"id":"https://openalex.org/C2780385302","wikidata":"https://www.wikidata.org/wiki/Q367158","display_name":"Protocol (science)","level":3,"score":0.4440571069717407},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.401146799325943},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.23413482308387756},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.18665790557861328},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.09383898973464966},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","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/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tifs.2022.3233780","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tifs.2022.3233780","pdf_url":null,"source":{"id":"https://openalex.org/S61310614","display_name":"IEEE Transactions on Information Forensics and Security","issn_l":"1556-6013","issn":["1556-6013","1556-6021"],"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 Transactions on Information Forensics and Security","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/17","score":0.4399999976158142,"display_name":"Partnerships for the goals"}],"awards":[{"id":"https://openalex.org/G3234913861","display_name":"\u6297\u91cf\u5b50\u9690\u79c1\u4fdd\u62a4\u5bc6\u7801\u65b9\u6848\u7684\u5173\u952e\u6280\u672f\u7814\u7a76","funder_award_id":"61972332","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W89553247","https://openalex.org/W1534733761","https://openalex.org/W1557386445","https://openalex.org/W1600255172","https://openalex.org/W2027703952","https://openalex.org/W2079493184","https://openalex.org/W2095417570","https://openalex.org/W2102881299","https://openalex.org/W2166670067","https://openalex.org/W2496543269","https://openalex.org/W2794970575","https://openalex.org/W2884026699","https://openalex.org/W2885172320","https://openalex.org/W2888974282","https://openalex.org/W2968243397","https://openalex.org/W3006891894","https://openalex.org/W3164110928","https://openalex.org/W6749720243","https://openalex.org/W6754179441","https://openalex.org/W6755910214","https://openalex.org/W6784293753","https://openalex.org/W6795420174"],"related_works":["https://openalex.org/W2950202488","https://openalex.org/W2604424424","https://openalex.org/W2954326042","https://openalex.org/W1567449721","https://openalex.org/W765055999","https://openalex.org/W1970588133","https://openalex.org/W2745567114","https://openalex.org/W1763168562","https://openalex.org/W3100311625","https://openalex.org/W2777354851"],"abstract_inverted_index":{"Data":[0],"availability":[1],"is":[2,13,20,126,185],"the":[3,46,50,55,66,74,95,120,123,208,213,217,230],"major":[4],"concern":[5],"of":[6,29,69,102,122,148,166,186,222],"outsourced":[7,51],"data":[8,52,70,114,209],"storage":[9,17,57,247],"services.":[10],"While":[11],"reliability":[12],"promoted":[14],"by":[15],"many":[16],"providers,":[18],"it":[19,111,117],"infeasible":[21],"for":[22,83,128,136,140,172,240],"users":[23],"to":[24,33,41,64,76,168,211,226],"verify":[25],"these":[26],"claims.":[27],"Proofs":[28],"Storage-Time":[30,103],"are":[31],"proposed":[32],"address":[34],"this":[35],"issue:":[36],"they":[37],"allow":[38],"a":[39,43,78,133,146,170,180,183],"prover":[40,47],"convince":[42],"verifier":[44],"that":[45],"indeed":[48],"stores":[49],"continuously":[53],"during":[54],"whole":[56],"period.":[58],"These":[59,235],"protocols,":[60],"however,":[61],"either":[62],"fail":[63],"guarantee":[65],"actual":[67],"duration":[68],"possession,":[71],"or":[72],"require":[73],"client":[75],"perform":[77],"computationally":[79],"expensive":[80],"storing":[81],"process":[82],"each":[84,144],"file,":[85],"marking":[86],"them":[87],"far":[88],"from":[89],"being":[90],"practical.":[91],"We":[92],"present$\\mathsf":[93],"{ePoSt}$,":[94],"first":[96],"secure,":[97],"stateless":[98],"and":[99,176,189,202,216,224],"efficient":[100],"Proof":[101,174],"protocol":[104],"with":[105],"public":[106,200],"verifiability.":[107],"Not":[108],"only":[109,156],"does":[110],"ensure":[112],"continuous":[113],"availability,":[115],"but":[116],"also":[118],"minimizes":[119],"cost":[121],"client,":[124],"which":[125],"crucial":[127],"real-world":[129],"deployment.":[130],"Specifically,":[131],"processing":[132,167],"1GB":[134],"file":[135,171,231],"outsourcing,":[137],"in":[138,193],"anticipation":[139],"3":[141],"proof/verify":[142],"interactions,":[143],"attesting":[145],"period":[147],"1":[149],"year":[150],"at":[151,179],"25":[152],"minutes":[153],"intervals":[154],"requires":[155,163],"66.34":[157],"minutes.":[158],"In":[159],"contrast,":[160],"state-of-the-art":[161],"solution":[162,198],"51":[164],"hours":[165],"prepare":[169],"outsourcing.":[173],"size":[175,187],"verification":[177,214,225],"remains":[178,203],"reasonable":[181],"cost:":[182],"proof":[184],"48.82KB,":[188],"can":[190],"be":[191,227],"verified":[192],"36.05":[194],"ms.":[195],"Furthermore,":[196],"our":[197],"enjoys":[199],"verifiability":[201],"stateless.":[204],"The":[205],"former":[206],"allows":[207,219],"owner":[210],"outsource":[212],"process,":[215],"latter":[218],"unlimited":[220],"number":[221],"proofs":[223],"conducted":[228],"after":[229],"has":[232],"been":[233],"stored.":[234],"properties":[236],"make$\\mathsf":[237],"{ePoSt}$particularly":[238],"suitable":[239],"new":[241],"business":[242],"models":[243],"such":[244],"as":[245],"decentralised":[246],"networks":[248],"(e.g.,":[249],"Filecoin).":[250]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":9},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":2}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2025-10-10T00:00:00"}