Patent ID: 11907380
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G  H

Claim 5:
6. The computer-implemented method of claim 3, wherein:
the second cryptographic element c2 is an elements of a secret key (1, s) of a homomorphic encryption system;
the first cryptographic element c1 is an element of a cyphertext (c0, c1) encrypted under a corresponding public key;
c0 is another cryptographic element; and
further comprising, subsequent to obtaining a result of a polynomial multiplication c1s, computing a sum of c1s and c0 to obtain a decryption m=c0+c1s modulo p of the cyphertext, wherein p is a predefined prime number for the homomorphic encryption system.