2-step 위상 천이 디지털 간섭계를 이용한 이진 데이터 암호화 및 복호화

Encryption and decryption of binary data with 2-step phase-shifting digital interferometry

We propose a method of encryption and decryption of binary data using 2-step phase-shifting digital interferometry. This technique reduces the number of interferograms in the phase-shifting interferometry. The binary data has been expressed with random code and random phase. We remove the dc-term of the phase-shifting digital interferogram to restore the original binary data. Simulation results shows that the proposed technique can be used for binary data encryption and decryption.