Two cryptographic methods for storing graphic information are presented in this paper. The information is encoded by phase modulation or the angular coding. The information are read out by means of holographic interfe...
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ISBN:
(纸本)0819425818
Two cryptographic methods for storing graphic information are presented in this paper. The information is encoded by phase modulation or the angular coding. The information are read out by means of holographic interference. Without decoding card,no one can read out the information stored in the informational card.
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