{"id":"https://openalex.org/W7133334056","doi":"https://doi.org/10.48550/arxiv.2603.01091","title":"On the Practical Feasibility of Harvest-Now, Decrypt-Later Attacks","display_name":"On the Practical Feasibility of Harvest-Now, Decrypt-Later Attacks","publication_year":2026,"publication_date":"2026-03-01","ids":{"openalex":"https://openalex.org/W7133334056","doi":"https://doi.org/10.48550/arxiv.2603.01091"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2603.01091","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2603.01091","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2603.01091","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5093725954","display_name":"Javier Blanco-Romero","orcid":"https://orcid.org/0009-0004-0635-953X"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Blanco-Romero, Javier","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5127955960","display_name":"Florina Almenares Mendoza","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Mendoza, Florina Almenares","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5127900801","display_name":"Carlos Garc\u00eda Rubio","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Rubio, Carlos Garc\u00eda","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5121528073","display_name":"Celeste Campo","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Campo, Celeste","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5127963708","display_name":"Daniel D\u00edaz S\u00e1nchez","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S\u00e1nchez, Daniel D\u00edaz","raw_affiliation_strings":[],"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5093725954"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10020","display_name":"Quantum Information and Cryptography","score":0.21299999952316284,"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/T10020","display_name":"Quantum Information and Cryptography","score":0.21299999952316284,"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/T10237","display_name":"Cryptography and Data Security","score":0.1347000002861023,"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/T13748","display_name":"Advanced Statistical Modeling Techniques","score":0.05310000106692314,"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/rekeying","display_name":"Rekeying","score":0.8810999989509583},{"id":"https://openalex.org/keywords/adversary","display_name":"Adversary","score":0.7864000201225281},{"id":"https://openalex.org/keywords/encryption","display_name":"Encryption","score":0.6001999974250793},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.47119998931884766},{"id":"https://openalex.org/keywords/forward-secrecy","display_name":"Forward secrecy","score":0.46869999170303345},{"id":"https://openalex.org/keywords/testbed","display_name":"Testbed","score":0.45680001378059387},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.45019999146461487},{"id":"https://openalex.org/keywords/adversary-model","display_name":"Adversary model","score":0.42419999837875366},{"id":"https://openalex.org/keywords/ciphertext","display_name":"Ciphertext","score":0.38519999384880066}],"concepts":[{"id":"https://openalex.org/C127150765","wikidata":"https://www.wikidata.org/wiki/Q7310605","display_name":"Rekeying","level":4,"score":0.8810999989509583},{"id":"https://openalex.org/C41065033","wikidata":"https://www.wikidata.org/wiki/Q2825412","display_name":"Adversary","level":2,"score":0.7864000201225281},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.694599986076355},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6736000180244446},{"id":"https://openalex.org/C148730421","wikidata":"https://www.wikidata.org/wiki/Q141090","display_name":"Encryption","level":2,"score":0.6001999974250793},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.47119998931884766},{"id":"https://openalex.org/C205009425","wikidata":"https://www.wikidata.org/wiki/Q935662","display_name":"Forward secrecy","level":4,"score":0.46869999170303345},{"id":"https://openalex.org/C31395832","wikidata":"https://www.wikidata.org/wiki/Q1318674","display_name":"Testbed","level":2,"score":0.45680001378059387},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.45089998841285706},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.45019999146461487},{"id":"https://openalex.org/C7606001","wikidata":"https://www.wikidata.org/wiki/Q4686702","display_name":"Adversary model","level":3,"score":0.42419999837875366},{"id":"https://openalex.org/C93974786","wikidata":"https://www.wikidata.org/wiki/Q1589480","display_name":"Ciphertext","level":3,"score":0.38519999384880066},{"id":"https://openalex.org/C99674996","wikidata":"https://www.wikidata.org/wiki/Q1414155","display_name":"Key exchange","level":4,"score":0.38019999861717224},{"id":"https://openalex.org/C2780385302","wikidata":"https://www.wikidata.org/wiki/Q367158","display_name":"Protocol (science)","level":3,"score":0.3718000054359436},{"id":"https://openalex.org/C47191418","wikidata":"https://www.wikidata.org/wiki/Q3510462","display_name":"Information-theoretic security","level":3,"score":0.337799996137619},{"id":"https://openalex.org/C178489894","wikidata":"https://www.wikidata.org/wiki/Q8789","display_name":"Cryptography","level":2,"score":0.31940001249313354},{"id":"https://openalex.org/C148176105","wikidata":"https://www.wikidata.org/wiki/Q206494","display_name":"Transport Layer Security","level":3,"score":0.29440000653266907},{"id":"https://openalex.org/C58053490","wikidata":"https://www.wikidata.org/wiki/Q176555","display_name":"Quantum computer","level":3,"score":0.28769999742507935},{"id":"https://openalex.org/C2776788033","wikidata":"https://www.wikidata.org/wiki/Q320769","display_name":"Eavesdropping","level":2,"score":0.2824000120162964},{"id":"https://openalex.org/C2780598303","wikidata":"https://www.wikidata.org/wiki/Q65921492","display_name":"Flexibility (engineering)","level":2,"score":0.28200000524520874},{"id":"https://openalex.org/C95466800","wikidata":"https://www.wikidata.org/wiki/Q1027298","display_name":"Quantum key distribution","level":3,"score":0.28040000796318054},{"id":"https://openalex.org/C204806902","wikidata":"https://www.wikidata.org/wiki/Q2333581","display_name":"Semantic security","level":5,"score":0.26989999413490295},{"id":"https://openalex.org/C121822524","wikidata":"https://www.wikidata.org/wiki/Q5157582","display_name":"Computer security model","level":2,"score":0.2678000032901764},{"id":"https://openalex.org/C178005623","wikidata":"https://www.wikidata.org/wiki/Q308859","display_name":"Anonymity","level":2,"score":0.2669000029563904},{"id":"https://openalex.org/C203062551","wikidata":"https://www.wikidata.org/wiki/Q201339","display_name":"Public-key cryptography","level":3,"score":0.2621999979019165}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2603.01091","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2603.01091","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2603.01091","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2603.01091","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Harvest-now,":[0],"decrypt-later":[1],"(HN-DL)":[2],"attacks":[3],"threaten":[4],"today's":[5],"encrypted":[6],"communications":[7],"by":[8],"archiving":[9],"ciphertext":[10],"until":[11],"a":[12],"quantum":[13,96,138,151],"computer":[14],"can":[15,73],"break":[16],"the":[17,51,66,99,122,124,137,155,164],"underlying":[18],"key":[19,133,160],"exchange.":[20],"This":[21],"paper":[22],"reframes":[23],"HN-DL":[24],"as":[25],"an":[26,46,71],"economic":[27],"problem,":[28],"quantifying":[29],"adversary":[30,72,125,156],"costs":[31],"across":[32],"Transport":[33],"Layer":[34],"Security":[35],"(TLS)":[36],"1.2,":[37],"TLS":[38],"1.3,":[39],"QUIC,":[40],"and":[41,95,131,159],"Secure":[42],"Shell":[43],"(SSH)":[44],"with":[45,111],"open-source":[47],"testbed":[48],"that":[49,58,86],"reproduces":[50],"full":[52],"attack":[53],"sequence.":[54],"Our":[55],"model":[56],"shows":[57],"retaining":[59],"intercepted":[60],"traffic":[61],"is":[62],"economically":[63],"trivial,":[64],"shifting":[65],"defensive":[67,166],"question":[68],"from":[69],"whether":[70],"archive":[74,123],"to":[75,102,141],"how":[76],"much":[77],"decryption":[78],"will":[79],"cost.":[80],"We":[81],"evaluate":[82],"protocol":[83],"configuration":[84],"strategies":[85,106],"act":[87],"along":[88],"two":[89],"independent":[90],"cost":[91,152],"axes:":[92],"storage":[93,145],"overhead":[94],"workload.":[97],"Beyond":[98],"ongoing":[100],"migration":[101],"post-quantum":[103],"cryptography,":[104],"these":[105],"provide":[107],"defense":[108],"in":[109],"depth":[110],"current":[112],"infrastructure.":[113],"Encrypted":[114],"Client":[115],"Hello":[116],"forces":[117],"indiscriminate":[118],"bulk":[119],"collection,":[120],"inflating":[121],"must":[126],"retain,":[127],"while":[128,150],"aggressive":[129],"rekeying":[130,158],"larger":[132],"exchange":[134],"parameters":[135],"multiply":[136],"computations":[139],"required":[140],"recover":[142],"plaintext.":[143],"Because":[144],"inflation":[146,153],"penalizes":[147],"both":[148],"sides":[149],"targets":[154],"alone,":[157],"size":[161],"selection":[162],"offer":[163],"strongest":[165],"levers.":[167]},"counts_by_year":[],"updated_date":"2026-03-04T07:09:34.246503","created_date":"2026-03-04T00:00:00"}
