Key-based matrix scrambling
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I have a matrix and I need to scramble its elements in a reversible way using a key based function.It could be a key based permutation. The question: Are there any built-in MATLAB functions or libraries that could help me to perform such operation? any suggestions?
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Accepted Answer
Jan
on 31 Oct 2012
Edited: Jan
on 31 Oct 2012
data = rand(1, 128);
key = 12654;
stream0 = RandStream('mt19937ar', 'Seed', key);
RandStream.setDefaultStream(stream0);
index = randperm(128);
scrambled = data(index);
unscrambled = zeros(1, numel(data));
unscrambled(index) = scrambled;
isequal(data, unscrambled)
This is not tested yet.
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