Key-space analysis of double random phase encryption technique
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|Title:||Key-space analysis of double random phase encryption technique||Authors:||Monaghan, David S.
Naughton, Thomas J.
Sheridan, John T.
|Permanent link:||http://hdl.handle.net/10197/3356||Date:||10-Sep-2007||Online since:||2011-11-28T16:37:52Z||Abstract:||We perform a numerical analysis on the double random phase encryption/decryption technique. The key-space of an encryption technique is the set of possible keys that can be used to encode data using that technique. In the case of a strong encryption scheme, many keys must be tried in any brute-force attack on that technique. Traditionally, designers of optical image encryption systems demonstrate only how a small number of arbitrary keys cannot decrypt a chosen encrypted image in their system. However, this type of demonstration does not discuss the properties of the key-space nor refute the feasibility of an efficient brute-force attack. To clarify these issues we present a key-space analysis of the technique. For a range of problem instances we plot the distribution of decryption errors in the key-space indicating the lack of feasibility of a simple brute-force attack.||Funding Details:||Science Foundation Ireland
Irish Research Council for Science, Engineering and Technology
|Type of material:||Journal Article||Publisher:||Optical Society of America||Journal:||Applied Optics||Volume:||46||Issue:||26||Start page:||6641||End page:||6647||Copyright (published version):||2007 Optical Society of America||Subject LCSH:||Data encryption (Computer science)
Image processing--Digital techniques
|DOI:||10.1364/AO.46.006641||Other versions:||http://dx.doi.org/10.1364/AO.46.006641||Language:||en||Status of Item:||Not peer reviewed|
|Appears in Collections:||Electrical and Electronic Engineering Research Collection|
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