Systems, devices, and processes for homomorphic encryption

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11843687
APP PUB NO 20210075588A1
SERIAL NO

16990431

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Abstract

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Remote terminals are configured to generate ciphertexts from plaintext polynomials. Each ciphertext corresponds to a plaintext polynomial bound to a message space of a polynomial-based fully homomorphic cryptographic scheme. At least one server is configured to receive ciphertexts via a network from the plurality of remote terminals. The server performs a multiplication operation and an addition operation on the ciphertexts to obtain resultant ciphertexts. The multiplication operation includes performing a bitwise decomposition function on a ciphertext to obtain a bitwise decomposed ciphertext. The bitwise decomposition function maps a multi-bit data type to a sequence of bits. The multiplication operation further includes performing matrix multiplication on the bitwise decomposed ciphertext and a data element belonging to a set of data elements. Message filters, data search engines, and other applications are discussed.

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Patent Owner(s)

Patent OwnerAddress
LORICA CYBERSECURITY INCTORONTO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gulak, Glenn Toronto, CA 39 217
Khedr, Alhassan Toronto, CA 17 131
Vaikuntanathan, Vinod Boston, US 23 399

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