{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9824231","patent":{"patent_number":"US-9824231","title":"Retention management in a facility with multiple trust zones and encryption based secure deletion","assignee":null,"inventors":[],"filing_date":"2014-12-24T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["G06F","G06F","H04L","H04L","H04L","H04L","H04L","H04L","G06F","H04L"],"num_claims":14,"abstract":"A computing facility, including a storage management system belonging to a first trust zone having a first privilege level, a metadata management system belonging to a second trust zone having a second privilege level higher than the first privilege level, and a security management system belonging to a third trust zone having a third privilege level higher than or equal to the second privilege level. The storage management system is and configured to store multiple content entities, and the metadata management system is configured to manage, for each of the multiple content entities, metadata including a respective content encryption key and a respective retention time, each of the content entities being encrypted by its respective content encryption key. The security management system is configured to manage a master encryption key used to create the respective content encryption keys, and to confirm expiration of the respective retention times."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Retention management in a facility with multiple trust zones and encryption based secure deletion","description":"A computing facility, including a storage management system belonging to a first trust zone having a first privilege level, a metadata management system belonging to a second trust zone having a secon","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9824231","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9824231","citation_suggestion":"Patentable. \"Retention management in a facility with multiple trust zones and encryption based secure deletion\" (US-9824231). https://patentable.app/patents/US-9824231","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9824231","json":"https://patentable.app/api/llm-context/US-9824231","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:03:53.691Z"}