TY - GEN

T1 - Weakness of provably secure searchable encryption against frequency analysis

AU - Suga, Takanori

AU - Nishide, Takashi

AU - Sakurai, Kouichi

PY - 2012/12/1

Y1 - 2012/12/1

N2 - There are encryption schemes called searchable encryption schemes. We can prove the security of these schemes based on a security model. However, we face the risk of the frequency analysis in some constructions because these schemes encrypt the keywords per word in the file as well as itself. In this attack, we assume an adversary knows the frequency distribution of plaintexts (i.e., keywords), and an adversary measures the frequency of the ciphertext and guesses the plaintext by comparing the frequency of the plaintext with it. In this work, we apply this attack to the existing works and evaluate the resistance of the searchable encryption to this attack by considering the difference between the deterministic encryption and the probabilistic encryption, and the supported types of searches.

AB - There are encryption schemes called searchable encryption schemes. We can prove the security of these schemes based on a security model. However, we face the risk of the frequency analysis in some constructions because these schemes encrypt the keywords per word in the file as well as itself. In this attack, we assume an adversary knows the frequency distribution of plaintexts (i.e., keywords), and an adversary measures the frequency of the ciphertext and guesses the plaintext by comparing the frequency of the plaintext with it. In this work, we apply this attack to the existing works and evaluate the resistance of the searchable encryption to this attack by considering the difference between the deterministic encryption and the probabilistic encryption, and the supported types of searches.

UR - http://www.scopus.com/inward/record.url?scp=84879295958&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879295958&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84879295958

SN - 9781938302077

T3 - Proceedings of the 5th International Conference on Communications, Computers and Applications, MIC-CCA 2012

SP - 142

EP - 147

BT - Proceedings of the 5th International Conference on Communications, Computers and Applications, MIC-CCA 2012

T2 - 5th Mosharaka International Conference on Communications, Computers and Applications, MIC-CCA 2012

Y2 - 12 October 2012 through 14 October 2012

ER -