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Recoverable Redaction and Masking of Scanned Documents

IP.com Disclosure Number: IPCOM000238885D
Publication Date: 2014-Sep-23
Document File: 3 page(s) / 62K

Publishing Venue

The IP.com Prior Art Database

Abstract

Method for redacting scanned documents and make them look like they were scanned redacted and enable the recovery of the original scanned document.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 41% of the total text.

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Recoverable Redaction and Masking of Scanned Documents

A lot of documents contain sensitive information such as Personal Identifiable Information (PII), other Sensitive Personal Information (SPI), and information that is otherwise of a secret, sensitive or proprietary nature.

    There are a lot of cases where those documents that contain sensitive information should be both saved in a redacted version where the sensitive information is not presented and also saved as is (in its original form) in some content system.

    The problem is quite common and much more severe when the documents could not be immediately uploaded to the content system after they were scanned.

    For example when a police investigator is in the field and he meets some document that contains sensitive information that he wants also to upload to the case management system in the office and also to read in his mobile device e.g.

while in transit to the office. Regulations enforce that only the original document will be saved in the case management system. The police investigator will reach the office only in a few days but in the mean time he wants to read the document in the train and also not to concern from sensitive information exposure if his mobile device will be lost or stolen.

Prior art
"Methods and apparatus for securely displaying digital images
- EP 1961205 A2" provides methods for securing personalized or sensitive information appearing in digital images but does not provides a recoverable method that enable to recover the original content and does not transform the image to look like it was originally redacted so it will be hard for an attacker to find the sensitive information.

"Selective encryption of mixed raster content layers - US 6954532 B1" provides a method for encrypting and decrypting layers in an image but does not provide a method for redacting images that made the image looks like it was originally took redacted.

    Described is a method for redacting scanned documents and make them look like they were scanned redacted and enable the recovery of the original scanned document.

    The business value of this invention is that it enables early usage of documents that contain sensitive information and also enable saving them in unsecured devices and to finally upload them to a content system and eliminate the need of several copies of each document (redacted and unredacted) and increases the productivity of the field agents.

    In the preferred embodiment the user takes a picture of a document that contains sensitive information using the invention. The invention redacts the sensitive data in the image and hides it inside the image and makes the image look like the document was photographed in its redacted form. The user is able to look at the image whenever he likes and finally upload the image into some system that will save the original (not the redacted) image.

Implementation details

    When the user takes pictures with this invention the invention do the fol...