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1/31/2014 Sandeep - Master's project proposal 1
Sandeep Chandrashekaregowda January 31, 2014 UCCS
Master’s Project Proposal
Communication is important part in life
with confidentiality and integrity
Multimedia has become one of the most
realistic means of communication
Sharing requires communication through
insecure channel
Hence the requirement of securing
multimedia
1/31/2014 Sandeep - Master's project proposal 2
The motivation for this project is: • Three major classification of video encryption.
• Bits level encryption provides higher security
among all.
• The speed of encryption is low even after higher
compression ratio.
• Better to go with selective encryption.
• Selective frames in the video files must be
encrypted at a good speed.
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As a summary, this project: • Chosen encryption methodology is, Bit level
encryption.
• Selective encryption is to save computational
time, while still achieving adequate security.
• Encryption is done on selective frame.
• 16 bytes of Key used for the encryption.
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Prior work: • Study the MPEG-4 video format.
• MP4 is an ISO/IEC 14496-14:2003 standard
• It follows the box structure
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Working with MP4 • Retrieving data from moov box.
• Construct tables to identify frame offset.
• Retrieve the Frame data and Encrypt using
Matrix Encryption Algorithm.
• Replace the Frame with Encrypted Frame.
• Render the final file playable.
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Matrix Encryption Algorithm 1. Initial Round:
1. Divide the stream in frames to 16 bytes of sub-frames; consider it as a 4x4 matrix. Each sub-frame is encrypted separately.
2. Rounds:
1. Operate on the part of matrix: Divide the matrix as 2x2 matrix (each cell will be containing 2x2 matrix in it). Perform Xor operation on 1st part of the matrix with its next one.
2. Operate with Key: Perform Xor operation on the 4x4 matrix with key of 16 bytes (considering the key as 4x4 matrix for the operation)
3. Shift cells: shift the divided matrix cell values clockwise.
3. Final Round:
1. Append the encrypted sub-frames.
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1/31/2014 Sandeep - Master's project proposal 8
The deliverables for this project are: • Working prototype of the algorithm:
Divide the stream in frames to 16 bytes of sub-frames;
consider it as a 4x4
• Testing the algorithm:
Confidentially deliver the media
• How the algorithm is different from existing
Perform time/size analysis of the algortihm
• Project report:
To write simple and comprehensive project report
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9
The project is scheduled to be completed by the end of Spring 2014
The following is a proposed schedule for the project:
• January 27, 2014 Completed final project proposal
• February 1, 2014 Begin project work
• February 5, 2014 To start the coding in C#
• February 15, 2014 Discuss with advisor about the improvisations
• March 1, 2014 To start draft of report and discussions with advisor
• March 5, 2014 Final coding and UI
• March 15, 2014 To finish final project report
• April 10, 2014 To finish the project defense
• May 20, 2014 End of spring 2014 term
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[1] Qiao, Lintian, and Klara Nahrstedt. "A new algorithm for MPEG video encryption." Proc. of First International Conference on Imaging Science System and Technology. 1997.
[2] Liu, Fuwen, and Hartmut Koenig. "A survey of video encryption algorithms."computers & security 29.1 (2010): 3-15.
[3] Lui, Oi-Yan, Ching-Hung Yuen, and Kwok-Wo Wong. "Chaos-Based selective encryption for AVS video coding standard." Advances in Multimedia Information Processing–PCM 2012. Springer Berlin Heidelberg, 2012. 501-512
[4] Ravishankar, K. C., and M. G. Venkateshmurthy. "Region based selective image encryption." Computing & Informatics, 2006. ICOCI'06. International Conference on. IEEE, 2006.
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