TY - GEN
T1 - A robust scan-based side-channel attack method against HMAC-SHA-256 circuits
AU - Oku, Daisuke
AU - Yanagisawa, Masao
AU - Togawa, Nozomu
N1 - Publisher Copyright:
© 2017 IEEE.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2017/12/14
Y1 - 2017/12/14
N2 - A scan-based side-channel attack is still a real threat against a crypto circuit as well as a hash generator circuit, which can restore secret information by exploiting the scan data obtained from scan chains inside the chip during its processing. In this paper, we propose a scan-based attack method against a hash generator circuit called HMAC-SHA-256. Our proposed method restores the secret information by finding out the correspondence between the scan data obtained from a scan chain and the internal registers in the target HMAC-SHA-256 circuit, even if the scan chain includes registers other than the target hash generator circuit and an attacker does not know well the hash generation timing. Experimental results show that our proposed method successfully restores two secret keys of the HMAC-SHA-256 circuit in at most 6 hours.
AB - A scan-based side-channel attack is still a real threat against a crypto circuit as well as a hash generator circuit, which can restore secret information by exploiting the scan data obtained from scan chains inside the chip during its processing. In this paper, we propose a scan-based attack method against a hash generator circuit called HMAC-SHA-256. Our proposed method restores the secret information by finding out the correspondence between the scan data obtained from a scan chain and the internal registers in the target HMAC-SHA-256 circuit, even if the scan chain includes registers other than the target hash generator circuit and an attacker does not know well the hash generation timing. Experimental results show that our proposed method successfully restores two secret keys of the HMAC-SHA-256 circuit in at most 6 hours.
KW - HMAC
KW - SHA-256
KW - scan-based attack
KW - side-channel attack
UR - http://www.scopus.com/inward/record.url?scp=85043997278&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85043997278&partnerID=8YFLogxK
U2 - 10.1109/ICCE-Berlin.2017.8210596
DO - 10.1109/ICCE-Berlin.2017.8210596
M3 - Conference contribution
AN - SCOPUS:85043997278
T3 - IEEE International Conference on Consumer Electronics - Berlin, ICCE-Berlin
SP - 79
EP - 84
BT - 2017 IEEE 7th International Conference on Consumer Electronics - Berlin, ICCE-Berlin 2017
PB - IEEE Computer Society
T2 - 7th IEEE International Conference on Consumer Electronics - Berlin, ICCE-Berlin 2017
Y2 - 3 September 2017 through 6 September 2017
ER -