OpenSSL Bellcore's Protection Helps Fault Attack

Faults in software implementations target both data and instructions at different locations. Bellcore attack is a well-known fault attack that is able to break CRT-RSA. In response, cryptographic libraries such as OpenSSL are designed with protections. In this paper, we show two new fault locations...

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Bibliographic Details
Published in2018 21st Euromicro Conference on Digital System Design (DSD) pp. 500 - 507
Main Authors Carre, Sebastien, Desjardins, Matthieu, Facon, Adrien, Guilley, Sylvain
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2018
Subjects
Cathode ray tubes
Cryptography
fault attacks
Fault location
Libraries
monobit
OpenSSL
Random access memory
Registers
Software
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DOI10.1109/DSD.2018.00089

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Summary:Faults in software implementations target both data and instructions at different locations. Bellcore attack is a well-known fault attack that is able to break CRT-RSA. In response, cryptographic libraries such as OpenSSL are designed with protections. In this paper, we show two new fault locations on OpenSSL implementation of the CRT-RSA signature that restore the Bellcore attack and break OpenSSL protection against it. Quite surprisingly, one of the fault we found is made possible because of the existence of such protection.
DOI:10.1109/DSD.2018.00089