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Paper Abstract and Keywords
Presentation 2005-07-22 16:35
A note on cryptographic schemes using collision-resistant functions based on factoring
Jumpei Wada, Hajime Kanzaki (Kyoto Univ.), Shoichi Hirose (Fukui Univ.), Susumu Yoshida (Kyoto Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) A many-to-one function is called collision-resistant if it is infeasible to find two distinct inputs which correspond to the same output. Collision-resistant functions are used for a lot of cryptographic schemes such as encryption, digital signature and identification. In this paper, we consider a few cryptographic schemes using two collision-resistant functions based on factoring: The Schmidt-Samoa function and the Shamir-Tauman function.
First, we consider commitment schemes using these functions and discuss the security of the schemes. We also compare them with the one using a collision-resistant function based on discrete logarithm. Then, we present a scheme to improve the efficiency of the fail-stop signature
using the Schmidt-Samoa function for multiple messages. We also prove the security of this scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) collision-resistant function / Schmidt-Samoa function / Shamir-Tauman function / commitment scheme / fail-stop signature / / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 194, ISEC2005-62, pp. 137-142, July 2005.
Paper # ISEC2005-62 
Date of Issue 2005-07-15 (ISEC) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee ISEC IPSJ-CSEC SITE  
Conference Date 2005-07-21 - 2005-07-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Iwate Prefectural University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2005-07-ISEC-IPSJ-CSEC-SITE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A note on cryptographic schemes using collision-resistant functions based on factoring 
Sub Title (in English)  
Keyword(1) collision-resistant function  
Keyword(2) Schmidt-Samoa function  
Keyword(3) Shamir-Tauman function  
Keyword(4) commitment scheme  
Keyword(5) fail-stop signature  
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1st Author's Name Jumpei Wada  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Hajime Kanzaki  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Shoichi Hirose  
3rd Author's Affiliation Fukui University (Fukui Univ.)
4th Author's Name Susumu Yoshida  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2005-07-22 16:35:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2005-62 
Volume (vol) vol.105 
Number (no) no.194 
Page pp.137-142 
#Pages
Date of Issue 2005-07-15 (ISEC) 


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