{"id":"https://openalex.org/W1534087991","doi":"https://doi.org/10.1007/3-540-47870-1_11","title":"How to Manage Persistent State in DRM Systems","display_name":"How to Manage Persistent State in DRM Systems","publication_year":2002,"publication_date":"2002-01-01","ids":{"openalex":"https://openalex.org/W1534087991","doi":"https://doi.org/10.1007/3-540-47870-1_11","mag":"1534087991"},"language":"en","primary_location":{"id":"doi:10.1007/3-540-47870-1_11","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-47870-1_11","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","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/A5039526201","display_name":"William H. Shapiro","orcid":null},"institutions":[{"id":"https://openalex.org/I1320758411","display_name":"Entrust","ror":"https://ror.org/01deqjx32","country_code":"GB","type":"other","lineage":["https://openalex.org/I1320758411"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"William Shapiro","raw_affiliation_strings":["STAR Lab, InterTrust Technologies Corporation, 4750 Patrick Henry Drive, Santa Clara, CA, 95054","Intertrust Technologies Corporation"],"affiliations":[{"raw_affiliation_string":"STAR Lab, InterTrust Technologies Corporation, 4750 Patrick Henry Drive, Santa Clara, CA, 95054","institution_ids":[]},{"raw_affiliation_string":"Intertrust Technologies Corporation","institution_ids":["https://openalex.org/I1320758411"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5000607653","display_name":"Radek Vingralek","orcid":null},"institutions":[{"id":"https://openalex.org/I1320758411","display_name":"Entrust","ror":"https://ror.org/01deqjx32","country_code":"GB","type":"other","lineage":["https://openalex.org/I1320758411"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Radek Vingralek","raw_affiliation_strings":["STAR Lab, InterTrust Technologies Corporation, 4750 Patrick Henry Drive, Santa Clara, CA, 95054","Intertrust Technologies Corporation"],"affiliations":[{"raw_affiliation_string":"STAR Lab, InterTrust Technologies Corporation, 4750 Patrick Henry Drive, Santa Clara, CA, 95054","institution_ids":[]},{"raw_affiliation_string":"Intertrust Technologies Corporation","institution_ids":["https://openalex.org/I1320758411"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5039526201"],"corresponding_institution_ids":["https://openalex.org/I1320758411"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":3.9025,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.95201613,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"176","last_page":"191"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13999","display_name":"Digital Rights Management and Security","score":0.9997000098228455,"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/T13999","display_name":"Digital Rights Management and Security","score":0.9997000098228455,"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/T11181","display_name":"Advanced Data Storage Technologies","score":0.9990000128746033,"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/T11614","display_name":"Cloud Data Security Solutions","score":0.9918000102043152,"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/state","display_name":"State (computer science)","score":0.6534518003463745},{"id":"https://openalex.org/keywords/blockchain","display_name":"Blockchain","score":0.4553118944168091},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4387577176094055},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.4355127811431885},{"id":"https://openalex.org/keywords/internet-privacy","display_name":"Internet privacy","score":0.3941078186035156},{"id":"https://openalex.org/keywords/law-and-economics","display_name":"Law and economics","score":0.3450438380241394},{"id":"https://openalex.org/keywords/sociology","display_name":"Sociology","score":0.17418226599693298},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.08483591675758362}],"concepts":[{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.6534518003463745},{"id":"https://openalex.org/C2779687700","wikidata":"https://www.wikidata.org/wiki/Q20514253","display_name":"Blockchain","level":2,"score":0.4553118944168091},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4387577176094055},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.4355127811431885},{"id":"https://openalex.org/C108827166","wikidata":"https://www.wikidata.org/wiki/Q175975","display_name":"Internet privacy","level":1,"score":0.3941078186035156},{"id":"https://openalex.org/C190253527","wikidata":"https://www.wikidata.org/wiki/Q295354","display_name":"Law and economics","level":1,"score":0.3450438380241394},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.17418226599693298},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.08483591675758362}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/3-540-47870-1_11","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-47870-1_11","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Climate action","score":0.550000011920929,"id":"https://metadata.un.org/sdg/13"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W174440662","https://openalex.org/W1515932031","https://openalex.org/W1585275552","https://openalex.org/W1593760450","https://openalex.org/W1599281790","https://openalex.org/W1604676572","https://openalex.org/W1606178894","https://openalex.org/W1665488210","https://openalex.org/W1897761346","https://openalex.org/W1924362975","https://openalex.org/W2005725110","https://openalex.org/W2081569295","https://openalex.org/W2082222018","https://openalex.org/W2084445812","https://openalex.org/W2098721736","https://openalex.org/W2101158185","https://openalex.org/W2107561538","https://openalex.org/W2108183412","https://openalex.org/W2108255910","https://openalex.org/W2127342508","https://openalex.org/W2159339961","https://openalex.org/W2205436351","https://openalex.org/W4256367411","https://openalex.org/W4301647871","https://openalex.org/W6636246286","https://openalex.org/W6671597114"],"related_works":["https://openalex.org/W4210406818","https://openalex.org/W4306779889","https://openalex.org/W4386732777","https://openalex.org/W3211706803","https://openalex.org/W4382775358","https://openalex.org/W4246942721","https://openalex.org/W3209862047","https://openalex.org/W4304136894","https://openalex.org/W2989851257","https://openalex.org/W2799059781"],"abstract_inverted_index":null,"counts_by_year":[{"year":2013,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}