{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9690845","patent":{"patent_number":"US-9690845","title":"System for generating index resistant against divulging of information, index generation device, and method therefor","assignee":null,"inventors":[],"filing_date":"2012-07-27T00:00:00.000Z","publication_date":"2017-06-27T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","H04L"],"num_claims":11,"abstract":"In the present invention, scope search can be effectively performed in a database having encrypted registration information. A plurality of values, first identification information to identify the plurality of values, and a key are accepted as input. A value group is generated from the plurality of values. The value group is treated as a word group, and a secure index is generated from the word group, the first identification information, and the key. On the basis of a value to be retrieved and a key, trapdoor information for the value to be retrieved is generated. With respect to the generated secure index, a secure index assessment process is performed using the trapdoor information. When the value to be retrieved is assessed to be contained in the secure index as a result of the assessment process, second identification information to identify the secure index is output."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System for generating index resistant against divulging of information, index generation device, and method therefor","description":"In the present invention, scope search can be effectively performed in a database having encrypted registration information. A plurality of values, first identification information to identify the plu","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9690845","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-9690845","citation_suggestion":"Patentable. \"System for generating index resistant against divulging of information, index generation device, and method therefor\" (US-9690845). https://patentable.app/patents/US-9690845","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9690845","json":"https://patentable.app/api/llm-context/US-9690845","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:04:06.563Z"}