Nonce@Once: A Single-Trace EM Side Channel Attack on Several Constant-Time Elliptic Curve Implementations in Mobile Platforms

Monjur Alam,Baki Yilmaz,Frank Werner,Niels Samwel,Alenka Zajic,Daniel Genkin,Yuval Yarom,Milos Prvulovic

2021 IEEE European Symposium on Security and Privacy (EuroS&P)（2021）

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摘要

We present the first side-channel attack on full-fledged smartphones that recovers the elliptic curve secret scalar from the electromagnetic signal that corresponds to a single scalar-by-point multiplication in current versions of Libgcrypt, OpenSSL, HACL* and curve25519-donna. To avoid leaking information via side channels, these implementations follow the recommendations of RFC 7748 and use a co...

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关键词

side channel,em attack,elliptic curve cryptography,mobile phone

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