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Paper Abstract and Keywords
Presentation 2018-07-25 15:25
Application of the Singular Curve Point Decompression Attack to the Bitcoin Curve
Akira Takahashi (Kyoto Univ.), Mehdi Tibouchi, Masayuki Abe (NTT) ISEC2018-28 SITE2018-20 HWS2018-25 ICSS2018-31 EMM2018-27
Abstract (in Japanese) (See Japanese page) 
(in English) In this talk, we report that the singular curve point decompression attack of Blömer and Günther, which was originally presented as an attack against pairing-friendly curves, directly applies to the widely deployed secp k curve series. We experimentally verified that the attack can be carried out against an 8-bit microcontroller implementation of ECDSA over the secp256k1 curve, which is a high-profile target owing to its use in the Bitcoin protocol. The fault attack is devastating: the full secret key can be recovered by injecting a single clock glitch fault. We conclude that the point compression/decompression technique should never be applied to base points especially in constrained devices, such as Bitcoin hardware wallets.
Keyword (in Japanese) (See Japanese page) 
(in English) ECDSA / secp256k1 / Fault attack / Singular Curve Point Decompression Attack / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 151, ISEC2018-28, pp. 149-153, July 2018.
Paper # ISEC2018-28 
Date of Issue 2018-07-18 (ISEC, SITE, HWS, ICSS, EMM) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Download PDF ISEC2018-28 SITE2018-20 HWS2018-25 ICSS2018-31 EMM2018-27

Conference Information
Conference Date 2018-07-25 - 2018-07-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Sapporo Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security, etc. 
Paper Information
Registration To ISEC 
Conference Code 2018-07-HWS-ISEC-SITE-ICSS-EMM-CSEC-SPT 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Application of the Singular Curve Point Decompression Attack to the Bitcoin Curve 
Sub Title (in English)  
Keyword(1) ECDSA  
Keyword(2) secp256k1  
Keyword(3) Fault attack  
Keyword(4) Singular Curve Point Decompression Attack  
1st Author's Name Akira Takahashi  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Mehdi Tibouchi  
2nd Author's Affiliation NTT Secure Platform Laboratories (NTT)
3rd Author's Name Masayuki Abe  
3rd Author's Affiliation NTT Secure Platform Laboratories (NTT)
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Date Time 2018-07-25 15:25:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2018-28,IEICE-SITE2018-20,IEICE-HWS2018-25,IEICE-ICSS2018-31,IEICE-EMM2018-27 
Volume (vol) IEICE-118 
Number (no) no.151(ISEC), no.152(SITE), no.153(HWS), no.154(ICSS), no.155(EMM) 
Page pp.149-153 
#Pages IEICE-5 
Date of Issue IEICE-ISEC-2018-07-18,IEICE-SITE-2018-07-18,IEICE-HWS-2018-07-18,IEICE-ICSS-2018-07-18,IEICE-EMM-2018-07-18 

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