US 12,192,210 B2Granted

Identity anonymization with controlled masking and format preserving encryption

AssigneeMicrosoft Technology Licensing, LLC

InventorGuillermo Paul Proano

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Abstract

Systems are methods are used for facilitating identify anonymization by using controlled masking and encryption of user identifiers, such as UUIDs. A system that manages a UUID converts the UUID into a set of one or more different unique versions of the UUID for one or more corresponding different partner system(s) by removing and replacing masked portions of the UUID and by selectively encrypting the non-masked portions of the UUID. New masked portions added to the new version(s) of the UUID identify different corresponding partner(s) and/or rules to be applied by the different partner(s) when handling the different unique version(s) of the UUID(s). Partner systems that receive the new versions of the UUID identify and utilize the new masked portions to deterministically control decrypting and/or other processing of the new version of the UUID.

Claims15

Dependent claims

A method for generating new versions of a universally unique user identifier (UUID), the method comprising:

obtaining a UUID corresponding to a user identity, the UUID comprising a masked portion and a non-masked portion, the unmasked portion of the UUID being associated with a user identity in a network, the masked portion identifying a type of UUID;
stripping away the masked portion of the UUID from the non-masked portion the UUID;
selecting a set of one or more new masks to be applied to the UUID, the set of one or more new masks being associated with a corresponding set of rules for handling and processing the non-masked portion of the UUID;
subsequent to stripping away the masked portion of the UUID, selectively generating a modified non-masked portion of the UUID by modifying the non-masked portion of the UUID with a particular modification process while refraining from applying the particular modification process to the masked portion of the UUID;
and
subsequent to selectively generating the modified non-masked portion of the UUID, composing a new version of the UUID by adding the set of one or more new masks to the modified non-masked portion of the UUID.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/966,490Filed 14 Oct 2022
Published: US 2024/0129316 A118 Apr 2024
Granted: 7 Jan 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G06F 21/6254
Protecting personal data, e.g. for financial or medical purposes: by anonymising data, e.g. decorrelating personal data from the owner's…
H04L 63/102
For controlling access to devices or network resources: entity profiles
G06F 21/602
Protecting data: providing cryptographic facilities or services
H04L 9/0891
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: revocation or update of secret…

Family

US 2024/0129316 A1Pre-grant publication · published 18 Apr 2024
US 12,192,210 B2This patent

From the US filing history. Foreign family members aren’t listed.

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