%0 Conference Paper
%B Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
%D 2005
%T Security of feature extraction in image hashing
%A Swaminathan,A.
%A Mao,Yinian
%A M. Wu
%K cryptography;
%K differential
%K digital
%K entropy;
%K extraction;
%K feature
%K functions;
%K hash
%K hashing;
%K image
%K metric;
%K processing;
%K randomness;
%K robustness;
%K Security
%K signature;
%K signatures;
%X Security and robustness are two important requirements for image hash functions. We introduce "differential entropy" as a metric to quantify the amount of randomness in image hash functions and to study their security. We present a mathematical framework and derive expressions for the proposed security metric for various common image hashing schemes. Using the proposed security metric, we discuss the trade-offs between security and robustness in image hashing.
%B Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
%V 2
%P ii/1041 - ii/1044 Vol. 2 - ii/1041 - ii/1044 Vol. 2
%8 2005/03//
%G eng
%R 10.1109/ICASSP.2005.1415586