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Controlling access to data

A technology of data and data identification, applied in digital data protection, data exchange network, electronic digital data processing, etc.

Pending Publication Date: 2020-02-07
SCENTRICS INFORMATION SECURITY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, applicants have realized that such binary access control (i.e.

Method used

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  • Controlling access to data

Examples

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Embodiment Construction

[0160] figure 1 A first human user 1 and a second human user 2 are shown. A first user 1 uses a first communication device 3 and a second user 2 uses a second communication device 4 . These devices 3 , 4 are communicatively linked via the Internet 5 . They can be mobile phones, laptops, personal computers or any other electronic communication devices.

[0161] The key server 6 and feature server 7 are also connected to the Internet 5 . Access to these servers 6, 7 may be restricted to authorized users.

[0162] In a specific example of use, a first user 1 is sending a confidential email to a second user 2 . The first user 1 enters an email into the first communication device 3 and identifies one or more intended recipients, thereby defining an access control list (ACL) of the names of those users who will be allowed to decrypt the email. In this example, the ACL only contains the second user2.

[0163] Subsequently, the first communication device 3 initiates a secure com...

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PUM

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Abstract

A data encryption and decryption system is provided. An electronic encryption apparatus (3) is configured to extract a feature set from plaintext data using a lossy algorithm, encrypt the feature set,send it to a feature server (7), receive an access control list (ACL), send the same to a key server (6), and receive back an encryption key (9), which is used to encrypt the plaintext data. A data identifier is also exchanged. An electronic decryption apparatus (4) is configured to send the data identifier to the key server (6), identify an entity (2) to the key server (6), receive a decryptionkey from the key server (6), and decrypt the encrypted data. The key server (6) stores the ACL and data identifier in mutual association. When it receives a data identifier and entity identifier fromthe electronic decryption apparatus (4), it checks the entity (2) is on the ACL associated with the data identifier, and returns the decryption key.

Description

technical field [0001] The present invention relates to devices, systems and methods for encrypting and decrypting data. Background technique [0002] Mathematical encryption algorithms are widely used to protect data during data storage or transmission. Possession of a valid cryptographic decryption key allows encrypted data to be decrypted and used. For example, an author of an email may encrypt sensitive attachments before sending the email to one or more recipients over the Internet. [0003] If a party possesses a valid decryption key, that party can access the original data (also known as plaintext data). A party that does not possess a valid decryption key cannot access the original data. [0004] However, applicants have realized that such binary access control (ie access or no access depending on possession of a key) has certain limitations. In particular, Applicants have recognized that there are situations where it is desirable to have more fine-grained contro...

Claims

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Application Information

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IPC IPC(8): H04W12/02H04L29/06G06F21/62G06Q30/02H04L29/08H04L12/58
CPCG06F21/6254G06Q30/0271G06Q30/0277H04L63/0435H04L63/045H04L63/062H04L63/101H04W12/033H04L51/214H04L51/52H04L67/53G06F21/602H04L9/14
Inventor 约翰·斯图尔特·肖伊-泰勒古鲁·巴拉恩·钱德拉塞卡兰
Owner SCENTRICS INFORMATION SECURITY TECH
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