{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9843442","patent":{"patent_number":"US-9843442","title":"Operation method and apparatus for providing compression function for fast message hashing","assignee":null,"inventors":[],"filing_date":"2015-06-17T00:00:00.000Z","publication_date":"2017-12-12T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L"],"num_claims":10,"abstract":"An operation apparatus includes a message expansion unit, a state data initiation unit, a state data generation unit, and a chain variable update unit. The message expansion unit generates a plurality of expanded messages using a message. The state data initiation unit generates the initial value of state data using chain variable data. The state data generation unit generates the final value of the state data by iterating a combination function and a step function using the state data and the plurality of expanded messages. The chain variable update unit updates the chain variable data using the state data of the final value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Operation method and apparatus for providing compression function for fast message hashing","description":"An operation apparatus includes a message expansion unit, a state data initiation unit, a state data generation unit, and a chain variable update unit. The message expansion unit generates a plurality","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9843442","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-9843442","citation_suggestion":"Patentable. \"Operation method and apparatus for providing compression function for fast message hashing\" (US-9843442). https://patentable.app/patents/US-9843442","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9843442","json":"https://patentable.app/api/llm-context/US-9843442","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:28:13.989Z"}