The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2020
Filed:
Jun. 29, 2017
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Kim Henry Martin Laine, Seattle, WA (US);
Hao Chen, Seattle, WA (US);
Yuhou Xia, Princeton, NJ (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
In aspects of high-precision rational number arithmetic in homomorphic encryption, a computing device stores homomorphic encrypted data as a dataset, and implements an encryption application that can encode integers into plaintext polynomials, where the integers are representative of initial data received for encryption. The encryption application can encrypt the plaintext polynomials into ciphertexts of the homomorphic encrypted data, and perform homomorphic operations as rational number arithmetic on the ciphertexts, generating updated ciphertexts while the homomorphic encrypted data remains encrypted. The encryption application can then decrypt the updated ciphertexts to modified plaintext polynomials that can be resolved back to the plaintext polynomials effective to recover the integers that represent the initial data. The encryption application can also decode the modified plaintext polynomials back to the integers effective to recover the initial data in an unencrypted form.