XIANG Tao, YU Chen-yun, QU Jin-yu, et al. Research on the Security of DICOM Medical Images Based on Improved AES Encryption Algorithm[J]. Acta Electronica Sinica, 2012, 40(2): 406-411.
XIANG Tao, YU Chen-yun, QU Jin-yu, et al. Research on the Security of DICOM Medical Images Based on Improved AES Encryption Algorithm[J]. Acta Electronica Sinica, 2012, 40(2): 406-411. DOI: 10.3969/j.issn.0372-2112.2012.02.032.
a medical image encryption algorithm is proposed.The algorithm is based on the design principle of AES
and combined with Skew tent map.The standard procedure of AES is modified so that it can be suitable for the DICOM medical digital images.At first
the block size 4*4 in AddRoundKey is replaced by the size of an image.Then the basic information of patient is protected by our proposed algorithm.In addition
the AES's MixColumns and key schedule are improved.The theoretical analysis and numerical simulations show that the improved algorithm not only has better confusion diffusion effects with less computational overhead
but also can maintain the compatibility of DICOM file format.