Abstract
There is memory and storage problem of long key in encryption algorithm, so combining biometric characteristic with the traditional encryption algorithm is a new research direction. An encryption algorithm based on key from iris features and AES is proposed. On the basis of iris images preprocessing stage, effective iris area is decomposed to three layers by 2D Haar wavelet. Detail coefficients from the third layer is extracted and 375-bit iris codes is generated, 128-bit key is extracted from iris codes by using unit mapping function. The encryption and decryption experiments with AES was applied on the image with size of 512×512. Experimental result shows that the encrypted image has high security, also the purpose of protecting image information is reached.
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