Security of feature extraction in image hashing
| Title | Security of feature extraction in image hashing |
| Publication Type | Conference Papers |
| Year of Publication | 2005 |
| Authors | Swaminathan A, Mao Y, M. Wu |
| Conference Name | Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on |
| Date Published | 2005/03// |
| Keywords | cryptography;, differential, digital, entropy;, extraction;, feature, functions;, hash, hashing;, image, metric;, processing;, randomness;, robustness;, Security, signature;, signatures; |
| Abstract | 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. |
| DOI | 10.1109/ICASSP.2005.1415586 |