TY - GEN
T1 - Active attack against oblivious RAM
AU - Nakano, Yuto
AU - Hidano, Seira
AU - Kiyomoto, Shinsaku
AU - Sakurai, Kouichi
N1 - Funding Information:
The last author, Kouichi SAKURAI was partially supported by JSPS Grants-in-Aid for Scientific Research named: KAKEN-JP15H02711.
Publisher Copyright:
© 2018 IEEE.
PY - 2018/8/9
Y1 - 2018/8/9
N2 - When a user consumes an encrypted digital content (for example video and music files), the player application accesses the secret key to decrypt the content. If the user is malicious, he can analyse the access pattern of the player application to extract the secret key efficiently. Oblivious RAMs (ORAMs) are effective solution for such threats. However, ORAMs are only effective for 'passive' attackers who can observe the RAM access done by the application, but cannot alter data stored on RAM. The attacker with ability to alter data on RAM can be called 'active' attackers. In this paper, we evaluate the security of ORAM schemes against active adversaries where they alter data on RAM and try to efficiently extract the secret information. We also propose countermeasures against active adversaries.
AB - When a user consumes an encrypted digital content (for example video and music files), the player application accesses the secret key to decrypt the content. If the user is malicious, he can analyse the access pattern of the player application to extract the secret key efficiently. Oblivious RAMs (ORAMs) are effective solution for such threats. However, ORAMs are only effective for 'passive' attackers who can observe the RAM access done by the application, but cannot alter data stored on RAM. The attacker with ability to alter data on RAM can be called 'active' attackers. In this paper, we evaluate the security of ORAM schemes against active adversaries where they alter data on RAM and try to efficiently extract the secret information. We also propose countermeasures against active adversaries.
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U2 - 10.1109/AINA.2018.00112
DO - 10.1109/AINA.2018.00112
M3 - Conference contribution
AN - SCOPUS:85052293046
SN - 9781538621943
T3 - Proceedings - International Conference on Advanced Information Networking and Applications, AINA
SP - 744
EP - 751
BT - Proceedings - 32nd IEEE International Conference on Advanced Information Networking and Applications, AINA 2018
A2 - Barolli, Leonard
A2 - Enokido, Tomoya
A2 - Ogiela, Marek R.
A2 - Ogiela, Lidia
A2 - Javaid, Nadeem
A2 - Takizawa, Makoto
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd IEEE International Conference on Advanced Information Networking and Applications, AINA 2018
Y2 - 16 May 2018 through 18 May 2018
ER -