Abstract
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.
Original language | English |
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Title of host publication | 2017 IEEE 7th International Conference on Consumer Electronics - Berlin, ICCE-Berlin 2017 |
Publisher | IEEE Computer Society |
Pages | 79-84 |
Number of pages | 6 |
Volume | 2017-September |
ISBN (Electronic) | 9781509040148 |
DOIs | |
Publication status | Published - 2017 Dec 14 |
Event | 7th IEEE International Conference on Consumer Electronics - Berlin, ICCE-Berlin 2017 - Berlin, Germany Duration: 2017 Sep 3 → 2017 Sep 6 |
Other
Other | 7th IEEE International Conference on Consumer Electronics - Berlin, ICCE-Berlin 2017 |
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Country | Germany |
City | Berlin |
Period | 17/9/3 → 17/9/6 |
Keywords
- HMAC
- scan-based attack
- SHA-256
- side-channel attack
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Industrial and Manufacturing Engineering
- Media Technology