Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2012-09-21 13:50
[Invited Talk] Public Key Compression and Modulus Switching for Fully Homomorphic Encryption over the Integers
Jean-Sebastien Coron (Univ. of Luxembourg), David Naccache (ENS), Mehdi Tibouchi (NTT) ISEC2012-50
Abstract (in Japanese) (See Japanese page) 
(in English) We describe a compression technique that reduces the public key size of van Dijk, Gentry, Halevi and Vaikuntanathan's (DGHV) fully homomorphic scheme over the integers from O(lambda^7) to O(lambda^5). Our variant remains semantically secure, but in the random oracle model. We obtain an implementation of the full scheme
with a 10 MB public key instead of 800 MB previously.

Additionally we show how to extend the quadratic encryption technique of Coron et al. (CRYPTO 2011) to higher degrees, to obtain a shorter public-key for the basic scheme, and we describe a new modulus switching technique for the DGHV scheme that enables to use the new FHE-without-bootstrapping framework of Brakerski et al.

Finally we describe an improved attack against the Approximate GCD Problem on which the DGHV scheme is based, with complexity O(2^rho) instead of O(2^{3rho/2}).
Keyword (in Japanese) (See Japanese page) 
(in English) Fully homomorphic encryption / DGHV scheme / Public key compression / Modulus switching / Approximate common divisor problem / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 211, ISEC2012-50, pp. 37-37, Sept. 2012.
Paper # ISEC2012-50 
Date of Issue 2012-09-14 (ISEC) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ISEC2012-50

Conference Information
Committee ISEC  
Conference Date 2012-09-21 - 2012-09-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2012-09-ISEC 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Public Key Compression and Modulus Switching for Fully Homomorphic Encryption over the Integers 
Sub Title (in English)  
Keyword(1) Fully homomorphic encryption  
Keyword(2) DGHV scheme  
Keyword(3) Public key compression  
Keyword(4) Modulus switching  
Keyword(5) Approximate common divisor problem  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Jean-Sebastien Coron  
1st Author's Affiliation University of Luxembourg (Univ. of Luxembourg)
2nd Author's Name David Naccache  
2nd Author's Affiliation Ecole normale superieure (ENS)
3rd Author's Name Mehdi Tibouchi  
3rd Author's Affiliation NTT Secure Platform Laboratories (NTT)
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-3 
Date Time 2012-09-21 13:50:00 
Presentation Time 30 minutes 
Registration for ISEC 
Paper # ISEC2012-50 
Volume (vol) vol.112 
Number (no) no.211 
Page p.37 
#Pages 1 
Date of Issue 2012-09-14 (ISEC) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan