{"id":"https://openalex.org/W2600433495","doi":"https://doi.org/10.1093/comjnl/bxx025","title":"A New Method for Computational Private Information Retrieval","display_name":"A New Method for Computational Private Information Retrieval","publication_year":2017,"publication_date":"2017-03-03","ids":{"openalex":"https://openalex.org/W2600433495","doi":"https://doi.org/10.1093/comjnl/bxx025","mag":"2600433495"},"language":"en","primary_location":{"id":"doi:10.1093/comjnl/bxx025","is_oa":false,"landing_page_url":"https://doi.org/10.1093/comjnl/bxx025","pdf_url":null,"source":{"id":"https://openalex.org/S44643521","display_name":"The Computer Journal","issn_l":"0010-4620","issn":["0010-4620","1460-2067"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Computer Journal","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/A5015646430","display_name":"Gamze Tillem","orcid":null},"institutions":[{"id":"https://openalex.org/I134235054","display_name":"Sabanc\u0131 \u00dcniversitesi","ror":"https://ror.org/049asqa32","country_code":"TR","type":"education","lineage":["https://openalex.org/I134235054"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Gamze Tillem","raw_affiliation_strings":["Faculty of Engineering and Natural Sciences, Sabanc\u0131 University, \u0130stanbul, Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Engineering and Natural Sciences, Sabanc\u0131 University, \u0130stanbul, Turkey","institution_ids":["https://openalex.org/I134235054"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064835031","display_name":"Erkay Sava\u015f","orcid":"https://orcid.org/0000-0002-4869-5556"},"institutions":[{"id":"https://openalex.org/I134235054","display_name":"Sabanc\u0131 \u00dcniversitesi","ror":"https://ror.org/049asqa32","country_code":"TR","type":"education","lineage":["https://openalex.org/I134235054"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Erkay Sava\u015f","raw_affiliation_strings":["Faculty of Engineering and Natural Sciences, Sabanc\u0131 University, \u0130stanbul, Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Engineering and Natural Sciences, Sabanc\u0131 University, \u0130stanbul, Turkey","institution_ids":["https://openalex.org/I134235054"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5083404536","display_name":"Kamer Kaya","orcid":"https://orcid.org/0000-0001-8678-5467"},"institutions":[{"id":"https://openalex.org/I134235054","display_name":"Sabanc\u0131 \u00dcniversitesi","ror":"https://ror.org/049asqa32","country_code":"TR","type":"education","lineage":["https://openalex.org/I134235054"]}],"countries":["TR"],"is_corresponding":true,"raw_author_name":"Kamer Kaya","raw_affiliation_strings":["Faculty of Engineering and Natural Sciences, Sabanc\u0131 University, \u0130stanbul, Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Engineering and Natural Sciences, Sabanc\u0131 University, \u0130stanbul, Turkey","institution_ids":["https://openalex.org/I134235054"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5083404536"],"corresponding_institution_ids":["https://openalex.org/I134235054"],"apc_list":{"value":2635,"currency":"GBP","value_usd":3232},"apc_paid":null,"fwci":0.1994,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.60516485,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"60","issue":"8","first_page":"1238","last_page":"1250"},"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/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.9975000023841858,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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/T11130","display_name":"Coding theory and cryptography","score":0.9932000041007996,"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/modular-exponentiation","display_name":"Modular exponentiation","score":0.9006685018539429},{"id":"https://openalex.org/keywords/speedup","display_name":"Speedup","score":0.797307550907135},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7599700689315796},{"id":"https://openalex.org/keywords/exponentiation","display_name":"Exponentiation","score":0.709234356880188},{"id":"https://openalex.org/keywords/public-key-cryptography","display_name":"Public-key cryptography","score":0.5821322202682495},{"id":"https://openalex.org/keywords/cryptosystem","display_name":"Cryptosystem","score":0.5575023293495178},{"id":"https://openalex.org/keywords/cryptography","display_name":"Cryptography","score":0.4272609055042267},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.39361172914505005},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.39045608043670654},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2982889413833618},{"id":"https://openalex.org/keywords/encryption","display_name":"Encryption","score":0.20158839225769043},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.18374192714691162},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.14312100410461426}],"concepts":[{"id":"https://openalex.org/C152763109","wikidata":"https://www.wikidata.org/wiki/Q1228841","display_name":"Modular exponentiation","level":4,"score":0.9006685018539429},{"id":"https://openalex.org/C68339613","wikidata":"https://www.wikidata.org/wiki/Q1549489","display_name":"Speedup","level":2,"score":0.797307550907135},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7599700689315796},{"id":"https://openalex.org/C81539297","wikidata":"https://www.wikidata.org/wiki/Q33456","display_name":"Exponentiation","level":2,"score":0.709234356880188},{"id":"https://openalex.org/C203062551","wikidata":"https://www.wikidata.org/wiki/Q201339","display_name":"Public-key cryptography","level":3,"score":0.5821322202682495},{"id":"https://openalex.org/C6295992","wikidata":"https://www.wikidata.org/wiki/Q976521","display_name":"Cryptosystem","level":3,"score":0.5575023293495178},{"id":"https://openalex.org/C178489894","wikidata":"https://www.wikidata.org/wiki/Q8789","display_name":"Cryptography","level":2,"score":0.4272609055042267},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.39361172914505005},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.39045608043670654},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2982889413833618},{"id":"https://openalex.org/C148730421","wikidata":"https://www.wikidata.org/wiki/Q141090","display_name":"Encryption","level":2,"score":0.20158839225769043},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.18374192714691162},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.14312100410461426},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1093/comjnl/bxx025","is_oa":false,"landing_page_url":"https://doi.org/10.1093/comjnl/bxx025","pdf_url":null,"source":{"id":"https://openalex.org/S44643521","display_name":"The Computer Journal","issn_l":"0010-4620","issn":["0010-4620","1460-2067"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Computer Journal","raw_type":"journal-article"},{"id":"pmh:oai:research.sabanciuniv.edu:33002","is_oa":false,"landing_page_url":"http://research.sabanciuniv.edu/33002/1/bxx025.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S4306402254","display_name":"Sabanci University","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I134235054","host_organization_name":"Sabanc\u0131 \u00dcniversitesi","host_organization_lineage":["https://openalex.org/I134235054"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Peace, Justice and strong institutions","score":0.6399999856948853,"id":"https://metadata.un.org/sdg/16"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":5,"referenced_works":["https://openalex.org/W2364958319","https://openalex.org/W2401562461","https://openalex.org/W2401976587","https://openalex.org/W3028867652","https://openalex.org/W4210300416"],"related_works":["https://openalex.org/W4235485585","https://openalex.org/W670148","https://openalex.org/W1507420113","https://openalex.org/W4242613270","https://openalex.org/W2107014706","https://openalex.org/W28274153","https://openalex.org/W2736837562","https://openalex.org/W25953599","https://openalex.org/W2039465140","https://openalex.org/W4254816090"],"abstract_inverted_index":{"Lipmaa's":[0,46],"Computational":[1],"Private":[2],"Information":[3],"Retrieval":[4],"(CPIR)":[5],"protocol":[6],"is":[7,21,30],"probably":[8],"the":[9,15,43,69,87,103,108,114,123,137,147,158,162],"most":[10],"bandwidth":[11],"efficient":[12],"method":[13],"in":[14,56,107],"literature,":[16],"although":[17],"its":[18],"computational":[19],"complexity":[20],"a":[22,63,119],"limiting":[23],"factor":[24],"for":[25],"practical":[26],"applications":[27],"as":[28],"it":[29],"based":[31],"on":[32,110,129,143],"expensive":[33],"public":[34],"key":[35],"operations.":[36],"Utilizing":[37],"binary":[38],"decision":[39],"diagrams":[40],"(Bdd)":[41],"and":[42,80,96,122,146],"Damg\u00e5rd\u2013Jurik":[44],"cryptosystem,":[45],"CPIR":[47,65],"performs":[48],"three":[49],"modular":[50],"exponentiation":[51,72],"operations":[52,73],"per":[53,76,82],"internal":[54,78,84],"node":[55],"Bdd.":[57,88],"In":[58],"this":[59],"paper,":[60],"we":[61],"present":[62],"new":[64],"protocol,":[66],"which":[67],"reduces":[68],"number":[70,115,138],"of":[71,86,116,131,139,161],"to":[74,157],"1":[75],"first-level":[77],"nodes":[79,85],"2":[81],"other":[83],"For":[89],"1024-bit":[90],"exponents":[91],"(i.e.":[92],"80-bit":[93],"security":[94],"level)":[95],"32":[97],"768":[98],"items,":[99],"when":[100,134],"compared":[101,156],"with":[102],"fastest":[104],"parallel":[105],"implementation":[106,160],"literature":[109],"four":[111,144],"cores,":[112],"reducing":[113,136],"exponentiations":[117],"yields":[118],"1.22\u00d7":[120],"speedup":[121,155],"multi-exponentiation":[124],"technique":[125],"adds":[126],"2.23\u00d7":[127],"more":[128,152],"top":[130],"that.":[132],"Overall,":[133],"combined,":[135],"exponentiations,":[140],"multi-exponentiation,":[141],"parallelization":[142],"cores":[145],"hybrid":[148],"approach":[149],"can":[150],"provide":[151],"than":[153],"300\u00d7":[154],"sequential":[159],"original":[163],"method.":[164]},"counts_by_year":[{"year":2018,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}