Security Enhancement of Visual Hashes Through Key Dependent Wavelet Transformations

Parameterized wavelet filters and wavelet packet subband structures are discussed to be used as key dependent wavelet transforms in order to enhance the security of wavelet based hashing schemes. Experiments show that key dependency and keyspace of the hashing scheme considered have been significantly improved. The attack resistance could only be slightly enhanced by using parametrized wavelet filters.

• Type: Conference
• Year: 2005
• Where: ICIAP
• Authors: Albert Meixner, Andreas Uhl
• Keywords: ICIAP 2005, Image Processing, Key Dependent Wavelet, Parameterized Wavelet Filters, Parametrized Wavelet Filters