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Paper Abstract and Keywords
Presentation 2005-03-11 17:05
Framework of long-term validity assurance of time-stamps
Satoshi Ono, Eiichi Horita, Hidetaka Ishimoto (NTT)
Abstract (in Japanese) (See Japanese page) 
(in English) We investigate the framework for long-term validation of
timestamps based on the framework for long-term validation
of electronic signature. We evaluate several schemes from
the view point of the user convenience, especially
investigating whether long-term validation can be achieved
solely by a TSA service and whether a wide range of risks are
covered, in a scheme. We show that the two requirements
cannot be fulfilled under a scheme based on the conventional
electronic signatures, and they can be fulfilled under
our proposed DS-IMT scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) Timestamp / Electronic signature / Long-term validation, / Temporal Authentication / / / /  
Reference Info. IEICE Tech. Rep., vol. 104, March 2005.
Paper #  
Date of Issue 2005-03-04 (OIS) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee LOIS  
Conference Date 2005-03-11 - 2005-03-11 
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 LOIS 
Conference Code 2005-03-OIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Framework of long-term validity assurance of time-stamps 
Sub Title (in English)  
Keyword(1) Timestamp  
Keyword(2) Electronic signature  
Keyword(3) Long-term validation,  
Keyword(4) Temporal Authentication  
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Keyword(6)  
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Keyword(8)  
1st Author's Name Satoshi Ono  
1st Author's Affiliation NTT Information Sharing Laboratories (NTT)
2nd Author's Name Eiichi Horita  
2nd Author's Affiliation NTT Information Sharing Laboratories (NTT)
3rd Author's Name Hidetaka Ishimoto  
3rd Author's Affiliation NTT Information Sharing Laboratories (NTT)
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Speaker Author-1 
Date Time 2005-03-11 17:05:00 
Presentation Time 25 minutes 
Registration for LOIS 
Paper # OIS2004-110 
Volume (vol) vol.104 
Number (no) no.714 
Page pp.89-94 
#Pages
Date of Issue 2005-03-04 (OIS) 


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