Method, systems, and media for identifying whether a machine readable mark may contain sensitive data
AssigneeXerox Corporation
InventorGavan L. Tredoux
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention relate to attesting a document that contains encoded data, such as a barcode or DataGlyph. When a document contains encoded data that is not in human-readable form, the document is checked to determine whether content in the encoded data appears somewhere in the document in human-readable form. Based on the amount of content that appears in the document, the document may be marked with a seal that attests to the amount of content in the encoded data that appears in human-readable form. The seal may be visually distinctive to facilitate easy recognition by a user or device.
Claims19
A method of producing an attested document, said method comprising:
- reading encoded data in a document that is in a form other than human-readable form;
- determining an amount of content in the encoded data that appears in human-readable form in the document;
- determining a seal that attests to the amount of content in the encoded data that appears in human-readable form;
- and
- marking the document with the seal.
A method of verifying a document, wherein the document contains encoded data that is in a form other than human-readable form, said method comprising:
- identifying a seal on the document, the seal comprising data about the encoded data on the document;
- reading the seal;
- determining a digital signature based on the document;
- and
- verifying that content in the encoded data appears in human-readable form on the document based on a comparison of the digital signature with the seal.
A system configured to produce attested documents, said system, comprising:
- at least one processor configured to read encoded data in a document that is in a form other than human-readable form, determine an amount of content in the encoded data that appears in human-readable form in the document, and determine a seal that attests to the amount of content in the encoded data that appears in human-readable form;
- and
- at least one printer that is configured to mark the document with the seal.
Dependencies are inferred from the claim text.