{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11985250","patent":{"patent_number":"US-11985250","title":"Anonymous broadcast method, key exchange method, anonymous broadcast system, key exchange system, communication device, and program","assignee":null,"inventors":[],"filing_date":"2018-08-14T00:00:00.000Z","publication_date":"2024-05-14T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":4,"abstract":"A key exchange technique of performing a key exchange among N (≥2) parties, which can conceal metadata on communication, is provided. A key exchange method includes: a first key generation step in which a communication device Ui generates a first key; a first anonymous broadcast step in which the communication device Ui anonymously broadcasts the first key with a set R−{Ui} being designated for i∈{1, . . . , n} and the communication device Ui anonymously broadcasts the first key with φ being designated for i∈{n+1, . . . , N}; a second key generation step in which the communication device Ui generates a second key; a second anonymous broadcast step in which the communication device Ui anonymously broadcasts the second key with the set R−{Ui} being designated for i∈{1, . . . , n} and the communication device Ui anonymously broadcasts the second key with φ being designated for i∈{n+1, . . . , N}; and a session key generation step in which the communication device Ui generates a session key SK for i∈{1, . . . , n} if a predetermined condition is satisfied."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Anonymous broadcast method, key exchange method, anonymous broadcast system, key exchange system, communication device, and program","description":"A key exchange technique of performing a key exchange among N (≥2) parties, which can conceal metadata on communication, is provided. A key exchange method includes: a first key generation step in whi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11985250","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-11985250","citation_suggestion":"Patentable. \"Anonymous broadcast method, key exchange method, anonymous broadcast system, key exchange system, communication device, and program\" (US-11985250). https://patentable.app/patents/US-11985250","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11985250","json":"https://patentable.app/api/llm-context/US-11985250","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T09:44:50.411Z"}