{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11522712","patent":{"patent_number":"US-11522712","title":"Message authentication apparatus, message authentication method, and computer readable medium","assignee":null,"inventors":[],"filing_date":"2021-02-12T00:00:00.000Z","publication_date":"2022-12-06T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L"],"num_claims":8,"abstract":"A message authentication apparatus compresses a message M into a value H of 2n bits, and divides the value H into two values H[1] and H[2] each having n bits. The message authentication apparatus extracts two values U[1] and U[2] each having min{t, n/2} bits from the value H[1], generates a value V[1] of t bits, using as input the message M and the value U[1], and generates a value V[2] of t bits, using as input the message M and the value U[2]. The message authentication apparatus encrypts the value H[2] by a tweakable block cipher E, using the value V[1] as a tweak, to generate a value Z[1], and encrypts the value H[2] by the tweakable block cipher E, using the value V[2] as a tweak, to generate a value Z[2]. The message authentication apparatus generates an authenticator Z from the value Z[1] and the value Z[2]."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Message authentication apparatus, message authentication method, and computer readable medium","description":"A message authentication apparatus compresses a message M into a value H of 2n bits, and divides the value H into two values H[1] and H[2] each having n bits. The message authentication apparatus extr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11522712","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-11522712","citation_suggestion":"Patentable. \"Message authentication apparatus, message authentication method, and computer readable medium\" (US-11522712). https://patentable.app/patents/US-11522712","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11522712","json":"https://patentable.app/api/llm-context/US-11522712","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T00:17:36.322Z"}