Security and Communication Networks / 2017 / Article / Alg 8

Research Article

A Cloud-User Protocol Based on Ciphertext Watermarking Technology

Algorithm 8

Fixed Hamming distance coding.
Input: , L
Output:
   = empty set
  threshold=L
  flag=1
  while  not reach time-limit  do
   random generate a temp watermark t of length L
   flag=1
  for  each w in   do
  if  sum(XOR()<threshold)  then
   flag=0
   break
  end
  end
  if  flag  then
   Add t into
  end
  end
  return  

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