{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11258579","patent":{"patent_number":"US-11258579","title":"Method and circuit for implementing a substitution table","assignee":null,"inventors":[],"filing_date":"2019-02-21T00:00:00.000Z","publication_date":"2022-02-22T00:00:00.000Z","cpc_codes":["H04L","G06F","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":25,"abstract":"A cryptographic circuit performs a substitution operation of a cryptographic algorithm based on a scrambled substitution table. For each set of one or more substitution operations of the cryptographic algorithm, the circuit performs a series of sets of one or more substitution operations of which: one is a real set of one or more substitution operations defined by the cryptographic algorithm, the real set of one or more substitution operations being based on input data modified by a real scrambling key; and one or more others are dummy sets of one or more substitution operations, each dummy set of one or more dummy substitution operations being based on input data modified by a different false scrambling key."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and circuit for implementing a substitution table","description":"A cryptographic circuit performs a substitution operation of a cryptographic algorithm based on a scrambled substitution table. For each set of one or more substitution operations of the cryptographic","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11258579","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-11258579","citation_suggestion":"Patentable. \"Method and circuit for implementing a substitution table\" (US-11258579). https://patentable.app/patents/US-11258579","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11258579","json":"https://patentable.app/api/llm-context/US-11258579","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T07:34:54.940Z"}