원문정보
초록
영어
The encryption algorithm has disadvantages like the long key making memory difficult and uneasy safekeeping, which causes a potential threat to the information security. Therefore, a new direction of the encryption method research is to combine the biometric information with the traditional encryption algorithm. The key extracted from the iris and AES encryption algorithm are used in the image encryption algorithm. The db2 wavelet decomposition to the iris region is performed, and the third level high frequency coefficient is extracted as the iris feature codes, from which a 192 bit key is generated by using the stochastic mapping function. The randomness of the key extraction is analyzed. The proposed algorithm is employed to do the encryption test to the image. The encryption effect is compared with the scrambling encryption effect of the classic Arnold method. The experiment results show that security of the encryption image gained by using the proposed algorithm is higher, achieving the purpose of protecting image information.
목차
1. Introduction
2. Iris Feature Keys Extraction based on Wavelet Transform
2.1. The Basic Principle of Wavelet Transform
2.2. Iris Feature Extraction
3. Image Encryption Algorithm based on AES
3.1. AES Encryption Algorithm
3.2. The Image Encryption Principle
4. Analysis of Image Encryption Experiment
5. Conclusion
Acknowledgements
References