Encryption, authentication and copyright protection techniques for digital images
For the past several years, a lot of research work has been underway to devise security techniques to protect multimedia data like audio, image and video. A question that arises is why new techniques for multimedia security are required when the field of cryptography is already well matured? There a...
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| Format: | Thesis |
| Language: | English |
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2011
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| Online Access: | https://hdl.handle.net/10356/46246 |
| _version_ | 1826123045921619968 |
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| author | Fawad, Ahmed |
| author2 | Mohammed Yakoob Siyal |
| author_facet | Mohammed Yakoob Siyal Fawad, Ahmed |
| author_sort | Fawad, Ahmed |
| collection | NTU |
| description | For the past several years, a lot of research work has been underway to devise security techniques to protect multimedia data like audio, image and video. A question that arises is why new techniques for multimedia security are required when the field of cryptography is already well matured? There are several reasons that actually impede the direct use of cryptographic techniques for solving multimedia security problems. For example, an image encrypted using the AES algorithm cannot be correctly decrypted if it undergoes JPEG lossy compression. In multimedia scenarios, content preserving operations like lossy compression, enhancement, transcoding, etc are very common. Applying standard cryptographic techniques directly to the entire multimedia data stream will have problems because a single bit error in the transmitted data stream will cause errors in the data recovery stage. Hence there is a need to devise security algorithms that are focused specifically towards multimedia environment keeping in view its very intrinsic nature. |
| first_indexed | 2024-10-01T05:58:31Z |
| format | Thesis |
| id | ntu-10356/46246 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:58:31Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | ntu-10356/462462023-07-04T16:15:50Z Encryption, authentication and copyright protection techniques for digital images Fawad, Ahmed Mohammed Yakoob Siyal School of Electrical and Electronic Engineering DRNTU::Engineering::Computer science and engineering::Data::Data encryption For the past several years, a lot of research work has been underway to devise security techniques to protect multimedia data like audio, image and video. A question that arises is why new techniques for multimedia security are required when the field of cryptography is already well matured? There are several reasons that actually impede the direct use of cryptographic techniques for solving multimedia security problems. For example, an image encrypted using the AES algorithm cannot be correctly decrypted if it undergoes JPEG lossy compression. In multimedia scenarios, content preserving operations like lossy compression, enhancement, transcoding, etc are very common. Applying standard cryptographic techniques directly to the entire multimedia data stream will have problems because a single bit error in the transmitted data stream will cause errors in the data recovery stage. Hence there is a need to devise security algorithms that are focused specifically towards multimedia environment keeping in view its very intrinsic nature. DOCTOR OF PHILOSOPHY (EEE) 2011-07-08T04:42:55Z 2011-07-08T04:42:55Z 2010 2010 Thesis Fawad, A. (2010). Encryption, authentication and copyright protection techniques for digital images. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/46246 10.32657/10356/46246 en 200 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Computer science and engineering::Data::Data encryption Fawad, Ahmed Encryption, authentication and copyright protection techniques for digital images |
| title | Encryption, authentication and copyright protection techniques for digital images |
| title_full | Encryption, authentication and copyright protection techniques for digital images |
| title_fullStr | Encryption, authentication and copyright protection techniques for digital images |
| title_full_unstemmed | Encryption, authentication and copyright protection techniques for digital images |
| title_short | Encryption, authentication and copyright protection techniques for digital images |
| title_sort | encryption authentication and copyright protection techniques for digital images |
| topic | DRNTU::Engineering::Computer science and engineering::Data::Data encryption |
| url | https://hdl.handle.net/10356/46246 |
| work_keys_str_mv | AT fawadahmed encryptionauthenticationandcopyrightprotectiontechniquesfordigitalimages |