Multi-focused fine-grained security framework

Patent metadata

Field	Value
Publication number	US-9875364-B2
Application number	US-201514722410-A
Country	US
Kind code	B2
Filing date	May 27, 2015
Priority date	Apr 16, 2015
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

An approach is provided in which a knowledge manager generates a knowledge structure that includes security annotation tokens and term tokens. Each of the security annotation tokens are stored in a parallel field and align to at least one of the term tokens. The knowledge manager matches security policies corresponding to a search request to one or more of the security annotation tokens and, in turn, generates search results based upon obfuscation of one or more of the term tokens aligned to the matched security annotation tokens.

First claim

The invention claimed is:

1. A method comprising:
assigning a plurality of security annotation tags to at least one document in a corpus of electronic documents based upon one or more document properties corresponding to the at least one document;
building, by a processor, an electronic knowledge structure from the corpus of electronic documents, wherein the building further comprises:
generating a plurality of term tokens and storing the plurality of term tokens in a plurality of text fields, wherein the plurality of term tokens correspond to a plurality of terms included in the corpus of documents;
generating a plurality of security annotation tokens based on the plurality of security annotation tags and storing the plurality of security annotation tokens in a plurality of parallel fields that correspond to the plurality of text fields, wherein each of the plurality of security annotation tokens indicate a security level of one of the plurality of term tokens stored in the corresponding one of the plurality of text fields; and
storing the electronic knowledge structure in a memory;

matching, by the processor, one or more security policies corresponding to a search request to one or more of the plurality of security annotation tokens, wherein the search request is received over a computer network;
identifying, by the processor, a first subset of the plurality of term tokens that correspond to the matched one or more of the plurality of security annotation tokens and identifying a second subset of the plurality of term tokens not corresponding to the matched one or more of the plurality of security annotation tokens; and
generating, by the processor, one or more answers to the search request, wherein at least one of the one or more answers provides the second set of term tokens and obfuscates the first subset of term tokens.

2. The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a search restriction policy corresponding to the matched one or more security annotation tokens; and
omitting the first subset of term tokens during a search of the electronic knowledge structure.

3. The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a scoring restriction policy corresponding to the matched one or more security annotation tokens; and
omitting the first subset of term tokens during a scoring of one or more search results corresponding to the one or more answers.

4. The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a passage authorization security policy corresponding to the matched one or more security annotation tokens; and
deleting one or more candidate answers based upon the passage authorization security policy.

5. The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a visualization security policy corresponding to the matched one or more security annotation tokens; and
displaying a modified one of the one or more answers that masks one or more of the first subset of term tokens.

6. The method of claim 5 further comprising:
replacing the masked one or more of the first subset of term tokens with one or more security warning messages.

Assignees

• IBM

Inventors

• Beamon Bridget B
• Debroni Bradley M
• Filoti Octavian F
• Kyle Bryan J
• Nolan Christopher M

Classifications

• H04L63/08

  for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32) · CPC title

• H04L63/20

  for managing network security; network security policies in general (filtering policies H04L63/0227) · CPC title

• G06F21/6227 Primary

  where protection concerns the structure of data, e.g. records, types, queries · CPC title

• G06F21/6254

  by anonymising data, e.g. decorrelating personal data from the owner's identification · CPC title

• H04L63/10

  for controlling access to devices or network resources · CPC title