A homomorphic encryption device includes: a recryption parameter generating circuit, a
recryption circuit, and an arithmetic circuit. The recryption parameter generating circuit is …

(57) ABSTRACT A homomorphic encryption processing device includes the processing
circuitry is configured to generate ciphertext operation level information based on field …

A device that uses homomorphic encryption is disclosed. The device includes a public key
data generator configured to generate public key data, and a secret key data generator …

(57) ABSTRACT A homomorphic operation accelerator includes a plurality of circuits and a
homomorphic operation managing circuit. The plurality of circuits may perform homomorphic …

A processing apparatus includes at least one processor configured to function as: an input
unit that receives encrypted data based on homomorphic encryption as an input; and a …

A processing apparatus includes at least one processor configured to function as: an input
unit that receives encrypted data based on homomorphic encryption; and a process …

A device that uses homomorphic encryption is disclosed. The device obtains a first
encrypted polynomial, a second encrypted polynomial, a first encrypted weight, and a …

(57) ABSTRACT A fully homomorphic encryption method based on modular operation, the
method including: acquiring a plaintext of any numerical value data type in an encryption …

(57) ABSTRACT A method for encryption according to an embodiment includes generating a
ciphertext for a secret key that is an integer vector by using an integer-based first …

According to an authentication device is for authenticating the validity of a subject ciphertext
generated by encrypting a plaintext using homomorphic encryption. The authentication …