Homomorphic Encryption Method Supporting Floating-Point Arithmetic and Floating-Point Arithmetic Method for Encrypted Message Generated by the Same

摘要

According to the present invention, a computer-generated method of generating an isochronous cipher text includes: a first step of generating binary data of an isochronous cipher text that is isomorphically encrypted with an encryption key s for a predetermined message m; A second step of arranging error data of the same type cipher text generated in the first step on the least significant bit (LSB) side; And a third step of arranging the message part of the same-form cipher text on the lower-order bit side adjacent to the error data.