{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11308239","patent":{"patent_number":"US-11308239","title":"Jitter attack protection circuit","assignee":null,"inventors":[],"filing_date":"2018-05-15T00:00:00.000Z","publication_date":"2022-04-19T00:00:00.000Z","cpc_codes":["G06F","H04L","H04L","H04L"],"num_claims":20,"abstract":"Method and apparatus for protecting against a jitter attack upon a cryptographic processing device. In some embodiments, the cryptographic processing circuit is configured to perform a cryptographic function on a set of input data to generate a corresponding set of transformed output data. An input line supplies an input signal used by the cryptographic processing IC during execution of the cryptographic function. A monitor circuit monitors the input signal, and temporarily disables the cryptographic processing IC when time-varying changes to the input signal indicate a jitter attack may be taking place. The input signal may be a source voltage, and voltage transitions in the source voltage can be monitored. Alternatively, the input signal may be a clock signal, and frequency variations in the clock signal can be monitored. The monitor circuit may be arranged on a power island to maintain power during power fluctuations."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Jitter attack protection circuit","description":"Method and apparatus for protecting against a jitter attack upon a cryptographic processing device. In some embodiments, the cryptographic processing circuit is configured to perform a cryptographic f","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11308239","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-11308239","citation_suggestion":"Patentable. \"Jitter attack protection circuit\" (US-11308239). https://patentable.app/patents/US-11308239","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11308239","json":"https://patentable.app/api/llm-context/US-11308239","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:30:10.815Z"}