Wavelet packet methods for multimedia compression and encryption

Pommer, Andreas; Uhl, Andreas

doi:10.1109/pacrim.2001.953508

Cited by 22 publications

(14 citation statements)

References 17 publications

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“…The ÿrst attempts in this direction have been made to secure DCT-based multimedia representations (see e.g. [8][9][10][11][12][13][14][15][16][17]), wavelet based [18][19][20][21]17] and quadtree based representations [22,23] have been considered also. Recently, selective encryption schemes based on selective bitplane encryption [24], resistant to bit errors [25], and compliant to video formats [26] have been proposed for wireless environments.…”

Section: Selective Encryption Of Medical Image Datamentioning

confidence: 99%

Confidential storage and transmission of medical image data

Norcen

Podesser²,

Pommer

et al. 2003

Computers in Biology and Medicine

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We discuss computationally e cient techniques for conÿdential storage and transmission of medical image data. Two types of partial encryption techniques based on AES are proposed. The ÿrst encrypts a subset of bitplanes of plain image data whereas the second encrypts parts of the JPEG2000 bitstream. We ÿnd that encrypting between 20% and 50% of the visual data is su cient to provide high conÿdentiality. ?

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Section: Selective Encryption Of Medical Image Datamentioning

confidence: 99%

Confidential storage and transmission of medical image data

Norcen

Podesser²,

Pommer

et al. 2003

Computers in Biology and Medicine

Self Cite

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“…Here, application specific data structures are exploited to create more efficient encryption systems (see e.g. SE of MPEG video streams [1,5,10,11,12,15), of wavelet-based encoded imagery [2,4,8,9,13,15), and of quadtree decomposed images [2)). Consequently, SE only protects (i.e.…”

Section: Ad'ijanced Communications and Multimedia Securitymentioning

confidence: 99%

Selective Encryption of Visual Data

Skrepth¹,

Uhl²

2002

Advanced Communications and Multimedia Security

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“…Other proposals in the area of lightweight encryption [18] propose the encryption of the filter choice used for a wavelet decomposition. However, this suggestion remains vague and is not supported by any experiments, while [19,20] propose encrypting the orthogonal filterbanks used for an nonstationary multi-resolution analysis (NSMRA) decomposition. The use of concealed biorthogonal parametrized wavelet filters for lightweight encryption is proposed by [21].…”

Section: Introductionmentioning

confidence: 99%

Assessing JPEG2000 encryption with key-dependent wavelet packets

Engel

Stütz

Uhl

2012

EURASIP J. on Info. Security

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We analyze and discuss encryption schemes for JPEG2000 based on the wavelet packet transform with a keydependent subband structure. These schemes have been assumed to reduce the runtime complexity of encryption and compression. In addition to this "lightweight" nature, other advantages like encrypted domain signal processing have been reported. We systematically analyze encryption approaches based on key-dependent subband structures in terms of their impact on compression performance, their computational complexity and the level of security they provide as compared to more classical techniques. Furthermore, we analyze the prerequisites and settings in which the previously reported advantages actually hold and in which settings no advantages can be observed. As a final outcome it has to be stated that the compression integrated encryption approach based on the idea of secret wavelet packets can not be recommended.

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Wavelet packet methods for multimedia compression and encryption

Cited by 22 publications

References 17 publications

Confidential storage and transmission of medical image data

Confidential storage and transmission of medical image data

Selective Encryption of Visual Data

Assessing JPEG2000 encryption with key-dependent wavelet packets

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