Patent · US Active

Cryptography using varying sized symbol sets

US11496289B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

Amer A. Hassan · Cary, US
Whitney J Giaimo · Redmond, US
Roy D. Kuntz · Kirkland, US

Key dates

Filing date	Aug 5, 2020
Grant date	Nov 8, 2022
Priority date	—
Expiry date	Jan 1, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/14
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Disclosed are systems, methods, and non-transitory computer-readable media for symmetric cryptography using varying sized symbol sets. To protect against a brute force or other similar type of attack, multiple symbol sets of varying sizes can be used for encrypting/decrypting data. For example, different portions of the data (e.g., data blocks representing multiple symbols, set of bits representing a single symbol) may be encrypted/decrypted using different symbol sets that include different numbers of unique symbols. Using varying sized symbol sets adds additional complexity to the encryption process, thereby greatly increasing the difficulty in decrypting the encrypted data with a brute force attack.

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