Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Confidential product-sum computation method, confidential product-sum computation system,and computation apparatus

A computing device, computing method technology, applied in the field of hidden product sum computing systems, computing devices and their programs

Active Publication Date: 2015-07-15
NIPPON TELEGRAPH & TELEPHONE CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the multiplication operation requires communication and random number generation, it becomes the bottleneck of the hidden function calculation of the three sub-devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Confidential product-sum computation method, confidential product-sum computation system,and computation apparatus
  • Confidential product-sum computation method, confidential product-sum computation system,and computation apparatus
  • Confidential product-sum computation method, confidential product-sum computation system,and computation apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] figure 1 shows a configuration example of the hidden product sum computing system 100, figure 2 Indicates an example of its processing flow. The hidden product sum calculation system 100 includes a party X, a party Y, and a party Z as calculation devices that respectively perform symmetrical calculation processing.

[0074] The hidden product sum calculation of the present invention is carried out through the coordinated calculation of the three calculation devices of sub-device X, sub-device Y, and sub-device Z to perform data sequence A 0 =(a0 0 ,...,a0 na0－1 ), A 1 =(a1 0 ,...,a1 na1－1 ) and A 2 =(a2 0 ,...,a2 na2－1 ) with data column B 0 =(b0 0 ,...,b0 nb0－1 ), B 1 =(b1 0 ,...,b1 nb1－1 ) and B 2 =(b2 0 ,...,b2 nb2－1 ) product and calculation. na0, na1, na2, nb0, nb1, and nb2 are natural numbers respectively.

[0075] Such as image 3 As shown, each sub-device includes a random number generation unit 101, a first calculation unit 102, and a seco...

Embodiment 2

[0112] Embodiment 2 is a specific example of Embodiment 1, and is na0=na1=na2=nb0=nb1=nb2=n (n is an integer greater than 1), e00=e01=e10=e11=e12=e21=e22=e20= The case of e02=1. Figure 4 A configuration example of the hidden product sum computing system 200 of this embodiment is shown, Figure 5 Indicates an example of its processing flow. The hidden product sum calculation system 200 includes a sub-device X, a sub-device Y, a sub-device Z, a data sequence decomposition supply unit 210 , and an output unit 220 . Same as Example 1, such as image 3 As shown, each sub-device includes a random number generation unit 101 , a first calculation unit 102 , and a second calculation unit 103 .

[0113] The hidden product sum calculation system 200, through the coordinated calculation of the three calculation devices of sub-device X, sub-device Y, and sub-device Z, calculates the element a of a natural number smaller than the prime number p i , b i (i=0,...,n-1) two data columns A...

Embodiment 3

[0154] Embodiment 3 is a structure in which a fraud detection function is added to Embodiments 1 and 2 which perform product sum calculation. Figure 6shows a configuration example of the hidden product sum computing system 300, Figure 7 Indicates an example of its processing flow. The hidden product sum calculation system 300 includes a sub-device X, a sub-device Y, and a sub-device Z as computing devices that perform respective symmetrical calculation processing.

[0155] The hidden product sum of the present invention is calculated for a total of m groups of q=0,...,m-1 (m is an integer greater than 1) through the coordinated calculation of the three computing devices of sub-device X, sub-device Y, and sub-device Z (Parallel when m is 2 or more) Perform data column A q_0 =(a0 q_0 ,...,a0 q_na0－1 ), A q_1 =(a1 q_0 ,...,a1 q_na1－1 ) and A q_2 =(a2 q_0 ,...,a2 q_na2－1 ) with data column B q_0 =(b0 q_0 ,...,b0 q_nb0－1 ), B q_1 =(b1 q_0 ,...,b1 q_nb1－1 ) and B ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

There is provided a method that can quickly perform a secure sum-of-product computation by cooperative computation by three parties (computation apparatuses) that is easy to implement. In a secure computation method in which a party X performs a party-X random number generation step, a party-X first computation step and a party-X second computation step, a party Y performs a party-Y random number generation step, a party-Y first computation step and a party-Y second computation step, and a party Z performs a party-Z random number generation step, a party-Z first computation step and a party-Z second computation step, computation processings performed by the parties are symmetrical to each other.

Description

technical field [0001] The present invention relates to a hidden product-sum computing method, a hidden product-sum computing system, a computing device, and their programs for performing data processing, especially multiplication and product-sum operations, while concealing data through secret distribution. Background technique [0002] In the management and application of so-called sensitive information such as customer information and business information, security measures and personal privacy considerations have become more important issues due to the diversification of management information and changes in the information processing infrastructure such as cloud computing. Among them, recently, information leakage is prevented by distributing information in multiple places, and the popularization of secret distribution technology is being promoted. Furthermore, regarding the cryptographic function calculation (party protocol) that derives a specified calculation result ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09C1/00H04L9/08
CPCH04L2209/46G06F7/57G06F7/5443H04L9/085
Inventor 五十岚大滨田浩气千田浩司
Owner NIPPON TELEGRAPH & TELEPHONE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com