Record Details

Analysis And Design Of Image And Video Encryption Algorithms

Electronic Theses of Indian Institute of Science

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Field Value
 
Title Analysis And Design Of Image And Video Encryption Algorithms
 
Creator Yekkala, Anil Kumar
 
Subject Encryption Algorithms
Multimedia Encryption
Multimedia Security
Lightweight Encryption
Cryptanalysis
Image Compression
Image And Video Encryption
Computer Science
 
Description The rapid growth in multimedia based Internet systems and applications like
video telephony, video on demand, network based DVD recorders and IP
television has created a substantial need for multimedia security. One of the important requirements for multimedia security is transmission of the digital multimedia content in a secure manner using encryption for protecting it from eavesdropping. The simplest way of encrypting multimedia content is to consider the two-dimensional/three-dimensional image/video stream as an one-dimensional stream and to encrypt the entire content using standard block ciphers like AES, DES, IDEA or RC4 or using a stream cipher. The method of encrypting the entire multimedia content is considered as a naive encryption approach. Even though the naive encryption approach provides the desired security requirements, it imposes a large overhead on the multimedia codex. This is due to the size of the multimedia content, and also due to real time requirements of transmission and rendering. Hence, lightweight encryption schemes are gaining popularity for multimedia encryption. Lightweight Encryption schemes are based on the principle “Encrypt minimal and induce maximum noise". Lightweight encryption schemes are designed to take the structure of the multimedia content into consideration.
In our work we analyze some of the existing lightweight encryption schemes for digital images and video. The analysis is done based on the amount of security, scalability and effect on compression. A detailed study of some of the existing
lightweight encryption schemes is also done by designing cryptanalysis
schemes. The cryptanalysis schemes are designed using image noise clearing
algorithms and pixel prediction techniques. The designed cryptanalysis schemes reduce the amount of noise introduced by the corresponding lightweight encryption schemes considerably. Based on our analysis of existing lightweight
encryption schemes, we propose a set of more robust lightweight encryption
schemes for images and video. The proposed lightweight encryption schemes
are secure, scalable, and do not degrade the compression achieved. In our work, we also propose a few enhancements to JPEG image compression for achieving more compression, without compromising on the quality. The enhancements to the JPEG compression are extensions of the pixel prediction techniques used in the proposed cryptanalysis schemes.
 
Contributor Veni Madhavan, C E
 
Date 2009-03-19T09:38:02Z
2009-03-19T09:38:02Z
2009-03-19T09:38:02Z
2006-12
 
Type Thesis
 
Identifier http://hdl.handle.net/2005/436
 
Language en_US
 
Relation G20930