# US 2018/0026786 A1 · Encryption device, encryption method, encryption data, and non-transitory computer readable storage medium

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- Number: US 2018/0026786 A1
- Document ID: US20180026786A1
- Status: Published application
- Kind: A1
- Application number: 15/648,859
- Filed: 2017-07-13
- Published: 2018-01-25
- Earliest claimed: 2016-07-19
- Assignees: Yahoo Japan Corporation
- Applicants: Yahoo Japan Corporation
- Inventors: Shinkichi HORIE
- Web page: https://patentgrep.com/patent/US20180026786A1

## CPC

- H04L 9/30: Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
- H04L 9/0618: {Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation}
- H04L 9/0643: {Hash functions, e.g. MD5, SHA, HMAC or f9 MAC}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

According to one aspect of an embodiment an encryption device includes an acquisition unit that acquire information that is to be an encryption object. The encryption device includes an encryption unit that apply a plurality of functions to the acquired information in order of having a quasi-periodic structure to encrypt the information.

## Claims

### Claim 1

An encryption device comprising:
an acquisition unit that acquire information that is to be an encryption object; and
an encryption unit that apply a plurality of functions to the acquired information in order of having a quasi-periodic structure to encrypt the information.

### Claim 2 (depends on 1)

The encryption device according to claim 1, wherein
the encryption unit applies two different functions in order of Fibonacci sequence to encrypt the information.

### Claim 3 (depends on 1)

The encryption device according to claim 1, wherein
the encryption unit applies functions indicating crystal transmittance in a predetermined crystal.

### Claim 4 (depends on 3)

The encryption device according to claim 3, wherein
the encryption unit applies the functions indicating crystal transmittance in order of having a quasi-periodic structure to apply a function configuring a function of a Cantor function to the acquired information.

### Claim 5

An encryption method executed by an encryption device, the encryption method comprising:
acquiring information that is to be an encryption object; and
encrypting the information by applying a plurality of functions to the acquired information in order of having a quasi-periodic structure.

### Claim 6

An encryption data generated by an encryption method executed by an encryption device, the encryption method comprising:
acquiring information that is to be an encryption object; and
encrypting the information by applying a plurality of functions to the acquired information in order of having a quasi-periodic structure.

### Claim 7

A non-transitory computer-readable recording medium having stored therein an encryption program that causes a computer to execute a process comprising:
acquiring information that is to be an encryption object; and
encrypting the information by applying a plurality of functions to the acquired information in order of having a quasi-periodic structure.