{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8477379","patent":{"patent_number":"US-8477379","title":"Secure document workflow","assignee":null,"inventors":[],"filing_date":"2009-12-02T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["G06Q","G06F","H04L","H04L"],"num_claims":14,"abstract":"Presented is a method, for a participant in a secure document workflow, of generating workflow information for authenticating a document. The method comprises: receiving an image of the document; generating workflow information for the document image, including a document image descriptor dependent upon the appearance of the document image for later verifying the authenticity of a version of the document image that has been printed and scanned, the verification comprising electronically combining or comparing the document image descriptor with said version of the document image; generating a digital signature for later verifying the authenticity of the workflow information, the digital signature being derived from the workflow information using a cryptographic key associated with the participant; adding the digital signature to the workflow information; and communicating the document image and the workflow information to another workflow participant."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Secure document workflow","description":"Presented is a method, for a participant in a secure document workflow, of generating workflow information for authenticating a document. The method comprises: receiving an image of the document; gene","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8477379","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-8477379","citation_suggestion":"Patentable. \"Secure document workflow\" (US-8477379). https://patentable.app/patents/US-8477379","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8477379","json":"https://patentable.app/api/llm-context/US-8477379","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:55:27.481Z"}