{"id":"https://openalex.org/W2007725949","doi":"https://doi.org/10.1109/isit.2014.6874954","title":"One extra bit of download ensures perfectly private information retrieval","display_name":"One extra bit of download ensures perfectly private information retrieval","publication_year":2014,"publication_date":"2014-06-01","ids":{"openalex":"https://openalex.org/W2007725949","doi":"https://doi.org/10.1109/isit.2014.6874954","mag":"2007725949"},"language":"en","primary_location":{"id":"doi:10.1109/isit.2014.6874954","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isit.2014.6874954","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 IEEE International Symposium on Information Theory","raw_type":"proceedings-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/A5034272491","display_name":"Nihar B. Shah","orcid":"https://orcid.org/0000-0001-5158-9677"},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Nihar B. Shah","raw_affiliation_strings":["Dept. of EECS, UC, Berkeley","[Department of EECS, UC Berkeley, Berkeley, CA, USA]"],"affiliations":[{"raw_affiliation_string":"Dept. of EECS, UC, Berkeley","institution_ids":["https://openalex.org/I95457486"]},{"raw_affiliation_string":"[Department of EECS, UC Berkeley, Berkeley, CA, USA]","institution_ids":["https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109919225","display_name":"K. V. Rashmi","orcid":null},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"K. V. Rashmi","raw_affiliation_strings":["Dept. of EECS, UC, Berkeley","[Department of EECS, UC Berkeley, Berkeley, CA, USA]"],"affiliations":[{"raw_affiliation_string":"Dept. of EECS, UC, Berkeley","institution_ids":["https://openalex.org/I95457486"]},{"raw_affiliation_string":"[Department of EECS, UC Berkeley, Berkeley, CA, USA]","institution_ids":["https://openalex.org/I95457486"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030620564","display_name":"Kannan Ramchandran","orcid":"https://orcid.org/0000-0002-4567-328X"},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kannan Ramchandran","raw_affiliation_strings":["Dept. of EECS, UC, Berkeley","[Department of EECS, UC Berkeley, Berkeley, CA, USA]"],"affiliations":[{"raw_affiliation_string":"Dept. of EECS, UC, Berkeley","institution_ids":["https://openalex.org/I95457486"]},{"raw_affiliation_string":"[Department of EECS, UC Berkeley, Berkeley, CA, USA]","institution_ids":["https://openalex.org/I95457486"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5034272491"],"corresponding_institution_ids":["https://openalex.org/I95457486"],"apc_list":null,"apc_paid":null,"fwci":19.0649,"has_fulltext":false,"cited_by_count":225,"citation_normalized_percentile":{"value":0.99444693,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"856","last_page":"860"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":0.9998999834060669,"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"}},{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","score":0.9998000264167786,"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":0.9980000257492065,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8154429793357849},{"id":"https://openalex.org/keywords/erasure","display_name":"Erasure","score":0.7353661060333252},{"id":"https://openalex.org/keywords/erasure-code","display_name":"Erasure code","score":0.7266016006469727},{"id":"https://openalex.org/keywords/download","display_name":"Download","score":0.6307331323623657},{"id":"https://openalex.org/keywords/upload","display_name":"Upload","score":0.6282367706298828},{"id":"https://openalex.org/keywords/replication","display_name":"Replication (statistics)","score":0.6046476364135742},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.5990046262741089},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.5484925508499146},{"id":"https://openalex.org/keywords/private-information-retrieval","display_name":"Private information retrieval","score":0.4720609784126282},{"id":"https://openalex.org/keywords/distributed-data-store","display_name":"Distributed data store","score":0.4549944996833801},{"id":"https://openalex.org/keywords/reliability","display_name":"Reliability (semiconductor)","score":0.43893152475357056},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.4136587381362915},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.40672826766967773},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.36727604269981384},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.31625521183013916},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2912326157093048},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.1244153082370758},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.10723668336868286},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.10477674007415771},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.09571662545204163}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8154429793357849},{"id":"https://openalex.org/C2778790127","wikidata":"https://www.wikidata.org/wiki/Q484885","display_name":"Erasure","level":2,"score":0.7353661060333252},{"id":"https://openalex.org/C137529215","wikidata":"https://www.wikidata.org/wiki/Q5385031","display_name":"Erasure code","level":3,"score":0.7266016006469727},{"id":"https://openalex.org/C2780154274","wikidata":"https://www.wikidata.org/wiki/Q7126717","display_name":"Download","level":2,"score":0.6307331323623657},{"id":"https://openalex.org/C71901391","wikidata":"https://www.wikidata.org/wiki/Q7126699","display_name":"Upload","level":2,"score":0.6282367706298828},{"id":"https://openalex.org/C12590798","wikidata":"https://www.wikidata.org/wiki/Q3933199","display_name":"Replication (statistics)","level":2,"score":0.6046476364135742},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.5990046262741089},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.5484925508499146},{"id":"https://openalex.org/C99221444","wikidata":"https://www.wikidata.org/wiki/Q1532069","display_name":"Private information retrieval","level":2,"score":0.4720609784126282},{"id":"https://openalex.org/C24885549","wikidata":"https://www.wikidata.org/wiki/Q339678","display_name":"Distributed data store","level":2,"score":0.4549944996833801},{"id":"https://openalex.org/C43214815","wikidata":"https://www.wikidata.org/wiki/Q7310987","display_name":"Reliability (semiconductor)","level":3,"score":0.43893152475357056},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.4136587381362915},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.40672826766967773},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.36727604269981384},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.31625521183013916},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2912326157093048},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.1244153082370758},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.10723668336868286},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.10477674007415771},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.09571662545204163},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/isit.2014.6874954","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isit.2014.6874954","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 IEEE International Symposium on Information Theory","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.719.2623","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.719.2623","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://eecs.berkeley.edu/%7Erashmikv/papers/PIR_in_erasure_codes_ISIT2014.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1510496002","https://openalex.org/W1526780465","https://openalex.org/W1629652666","https://openalex.org/W1698110345","https://openalex.org/W1832668820","https://openalex.org/W1986070285","https://openalex.org/W2007725949","https://openalex.org/W2073346043","https://openalex.org/W2079232945","https://openalex.org/W2087207261","https://openalex.org/W2115256097","https://openalex.org/W2150307013","https://openalex.org/W2150777202","https://openalex.org/W2964143852","https://openalex.org/W3106482607","https://openalex.org/W4256371975","https://openalex.org/W4379532428","https://openalex.org/W6630529663","https://openalex.org/W6631587840","https://openalex.org/W6636565893","https://openalex.org/W6637342657","https://openalex.org/W6669064135"],"related_works":["https://openalex.org/W2137028263","https://openalex.org/W747659754","https://openalex.org/W2736316217","https://openalex.org/W2369083802","https://openalex.org/W2092863277","https://openalex.org/W2255466788","https://openalex.org/W3217414552","https://openalex.org/W2341029337","https://openalex.org/W2080717162","https://openalex.org/W2367703256"],"abstract_inverted_index":{"Private":[0],"information":[1],"retrieval":[2],"(PIR)":[3],"systems":[4,46,70],"allow":[5],"a":[6,10,13,39,57,141,194,204,231,243],"user":[7,101],"to":[8,18,56,130,177,187,238],"retrieve":[9],"record":[11,22],"from":[12,247],"public":[14],"database":[15],"without":[16],"revealing":[17],"the":[19,42,90,94,100,147,150,159,170,178,217,239,248],"server":[20],"which":[21,192],"is":[23,87,93,203,242],"being":[24],"retrieved.":[25],"The":[26,81],"literature":[27],"on":[28,48],"PIR":[29,67,120,138,174,188,227],"considers":[30],"only":[31,124],"replication-based":[32,190],"systems,":[33,191],"wherein":[34],"each":[35],"storage":[36,213,233],"node":[37],"stores":[38],"copy":[40],"of":[41,59,83,96,128,143,149,161,173,180,197,220],"entire":[43],"data.":[44,152],"However,":[45],"based":[47],"erasure":[49,117,198,224],"codes":[50,78,210],"are":[51,184,193],"gaining":[52],"increasing":[53],"popularity":[54],"due":[55],"variety":[58],"reasons.":[60],"This":[61,168,215],"paper":[62],"initiates":[63],"an":[64,115,223],"investigation":[65],"into":[66],"in":[68,189],"erasure-coded":[69],"by":[71,99],"establishing":[72],"its":[73],"capacity":[74,172],"and":[75,79,89,119,226,241],"designing":[76],"explicit":[77,116],"algorithms.":[80],"notion":[82],"privacy":[84],"considered":[85],"here":[86],"information-theoretic,":[88],"metric":[91,179],"optimized":[92],"amount":[95],"data":[97],"downloaded":[98],"during":[102],"PIR.":[103],"In":[104,134],"this":[105,221],"paper,":[106],"we":[107,113,154],"present":[108],"four":[109],"main":[110],"results.":[111],"First,":[112],"design":[114],"code":[118,225],"algorithm":[121,228],"that":[122,208,229],"requires":[123,230],"one":[125,165],"extra":[126],"bit":[127],"download":[129,142],"provide":[131],"perfect":[132],"privacy.":[133],"contrast,":[135],"all":[136],"existing":[137],"algorithms":[139],"require":[140],"at":[144,163],"least":[145,164],"twice":[146],"size":[148],"requisite":[151],"Second,":[153],"derive":[155],"lower":[156],"bounds":[157],"proving":[158],"necessity":[160],"downloading":[162],"additional":[166],"bit.":[167],"establishes":[169],"precise":[171],"with":[175],"respect":[176],"download.":[181],"These":[182],"results":[183],"also":[185],"applicable":[186],"special":[195],"case":[196],"codes.":[199],"Our":[200],"third":[201],"contribution":[202,219],"negative":[205],"result":[206],"showing":[207],"capacity-achieving":[209],"necessitate":[211],"super-linear":[212],"overheads.":[214],"motivates":[216],"fourth":[218],"paper:":[222],"linear":[232],"overhead,":[234],"provides":[235],"high":[236],"reliability":[237],"data,":[240],"small":[244],"factor":[245],"away":[246],"capacity.":[249]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":7},{"year":2023,"cited_by_count":13},{"year":2022,"cited_by_count":16},{"year":2021,"cited_by_count":22},{"year":2020,"cited_by_count":23},{"year":2019,"cited_by_count":40},{"year":2018,"cited_by_count":48},{"year":2017,"cited_by_count":35},{"year":2016,"cited_by_count":12},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":1}],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}