Encryption of Composite Multimedia Contents for Access Control

Masaaki FUJIYOSHI; Shoko IMAIZUMI; Hitoshi KIYA

doi:10.1093/ietfec/e90-a.3.590

Encryption of Composite Multimedia Contents for Access Control

Masaaki FUJIYOSHI, Shoko IMAIZUMI, Hitoshi KIYA

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An encryption scheme is proposed that considers hierarchies in media, such as text, images, sound, and so on, in a composite multimedia content to enable versatile access control. In the proposed scheme, a content provider has only one managed key (the master key) for a particular composite multimedia content, and an user who is permitted to access a reserved content entities in the composite content receives only one key that is subordinately generated from the master key. Another key generated from the identical master key is delivered to another user, and this permits the user to access different entities. This scheme introduces a new key concept, namely "unusable key," to keep all entities encrypted in a particular medium and to simultaneously decrypt several entities in other media. The other new key, "numbering key," is also used in this scheme to support simultaneous partial decryption of multiple images that are coded with a scalable coding technology. Simulation results show the effectiveness of the proposed scheme; in particular, the length of the managed master key and that of keys to be delivered to users are small.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E90-A No.3 pp.590-596

Publication Date: 2007/03/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e90-a.3.590

Type of Manuscript: Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing)

Category: Image

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Masaaki FUJIYOSHI, Shoko IMAIZUMI, Hitoshi KIYA, "Encryption of Composite Multimedia Contents for Access Control" in IEICE TRANSACTIONS on Fundamentals, vol. E90-A, no. 3, pp. 590-596, March 2007, doi: 10.1093/ietfec/e90-a.3.590.
Abstract: An encryption scheme is proposed that considers hierarchies in media, such as text, images, sound, and so on, in a composite multimedia content to enable versatile access control. In the proposed scheme, a content provider has only one managed key (the master key) for a particular composite multimedia content, and an user who is permitted to access a reserved content entities in the composite content receives only one key that is subordinately generated from the master key. Another key generated from the identical master key is delivered to another user, and this permits the user to access different entities. This scheme introduces a new key concept, namely "unusable key," to keep all entities encrypted in a particular medium and to simultaneously decrypt several entities in other media. The other new key, "numbering key," is also used in this scheme to support simultaneous partial decryption of multiple images that are coded with a scalable coding technology. Simulation results show the effectiveness of the proposed scheme; in particular, the length of the managed master key and that of keys to be delivered to users are small.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e90-a.3.590/_p

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@ARTICLE{e90-a_3_590,
author={Masaaki FUJIYOSHI, Shoko IMAIZUMI, Hitoshi KIYA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Encryption of Composite Multimedia Contents for Access Control},
year={2007},
volume={E90-A},
number={3},
pages={590-596},
abstract={An encryption scheme is proposed that considers hierarchies in media, such as text, images, sound, and so on, in a composite multimedia content to enable versatile access control. In the proposed scheme, a content provider has only one managed key (the master key) for a particular composite multimedia content, and an user who is permitted to access a reserved content entities in the composite content receives only one key that is subordinately generated from the master key. Another key generated from the identical master key is delivered to another user, and this permits the user to access different entities. This scheme introduces a new key concept, namely "unusable key," to keep all entities encrypted in a particular medium and to simultaneously decrypt several entities in other media. The other new key, "numbering key," is also used in this scheme to support simultaneous partial decryption of multiple images that are coded with a scalable coding technology. Simulation results show the effectiveness of the proposed scheme; in particular, the length of the managed master key and that of keys to be delivered to users are small.},
keywords={},
doi={10.1093/ietfec/e90-a.3.590},
ISSN={1745-1337},
month={March},}

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TY - JOUR
TI - Encryption of Composite Multimedia Contents for Access Control
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 590
EP - 596
AU - Masaaki FUJIYOSHI
AU - Shoko IMAIZUMI
AU - Hitoshi KIYA
PY - 2007
DO - 10.1093/ietfec/e90-a.3.590
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E90-A
IS - 3
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - March 2007
AB - An encryption scheme is proposed that considers hierarchies in media, such as text, images, sound, and so on, in a composite multimedia content to enable versatile access control. In the proposed scheme, a content provider has only one managed key (the master key) for a particular composite multimedia content, and an user who is permitted to access a reserved content entities in the composite content receives only one key that is subordinately generated from the master key. Another key generated from the identical master key is delivered to another user, and this permits the user to access different entities. This scheme introduces a new key concept, namely "unusable key," to keep all entities encrypted in a particular medium and to simultaneously decrypt several entities in other media. The other new key, "numbering key," is also used in this scheme to support simultaneous partial decryption of multiple images that are coded with a scalable coding technology. Simulation results show the effectiveness of the proposed scheme; in particular, the length of the managed master key and that of keys to be delivered to users are small.
ER -