Digital information encryption using Multiple Fourier transforms and decimal expansion of irrational numbers

Digital information is first transformed into binary image, and then the binary image will be encrypted using Multiple Fourier transforms and decimal expansion of irrational numbers. The decimal expansion of irrational number is used to generate random phase masks, which are used to scramble the binary image into random noise. Two tests were carried out to verify the security and robustness of our method. We also proposed a method for the reconstruction of the decrypted information when the encrypted information was attacked. (C) 2012 Elsevier GmbH. All rights reserved.