Patent · US Active

Masking sensitive information in a document

US12088718B2 · kind B2 · utility

1Cited by

2References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Michael Baessler · Neckartenzlingen, DE
Albert Maier · Tübingen, DE
Mike W. Grasselt · Echterdingen, DE
Yannick Saillet · Stuttgart, DE
Lars Bremer · Hessenhöfe, DE

Key dates

Filing date	Oct 19, 2020
Grant date	Sep 10, 2024
Priority date	—
Expiry date	Aug 4, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG06F21/84
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The exemplary embodiments disclose a method, a computer program product, and a computer system for protecting sensitive information. The exemplary embodiments may include using an inverted text index for evaluating one or more statistical measures of an index token of the inverted text index, using the one or more statistical measures for selecting a set of candidate tokens, extracting metadata from the inverted text index, associating the set of candidate tokens with respective token metadata, tokenizing at least one document resulting in one or more document tokens, comparing the one or more document tokens with the set of candidate tokens, selecting a set of document tokens to be masked, selecting at least part of the set of document tokens that comprises sensitive information according to the associated token metadata, masking the at least part of the set of document tokens, and providing one or more masked documents.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.