Abstract
This paper presents a novel algorithm to successfully achieve viable integrity and authenticity addition and verification of n-frame DICOM medical images using cryptographic mechanisms. The aim of this work is the enhancement of DICOM security measures, especially for multiframe images. Current approaches have limitations that should be properly addressed for improved security. The algorithm proposed in this work uses data encryption to provide integrity and authenticity, along with digital signature. Relevant header data and digital signature are used as inputs to cipher the image. Therefore, one can only retrieve the original data if and only if the images and the inputs are correct. The encryption process itself is a cascading scheme, where a frame is ciphered with data related to the previous frames, generating also additional data on image integrity and authenticity. Decryption is similar to encryption, featuring also the standard security verification of the image. The implementation was done in JAVA, and a performance evaluation was carried out comparing the speed of the algorithm with other existing approaches. The evaluation showed a good performance of the algorithm, which is an encouraging result to use it in a real environment.
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The authors would like to thank CNPq and FINEP for financial support for this research.
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Kobayashi, L.O.M., Furuie, S.S. Proposal for DICOM Multiframe Medical Image Integrity and Authenticity. J Digit Imaging 22, 71–83 (2009). https://doi.org/10.1007/s10278-008-9103-6
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DOI: https://doi.org/10.1007/s10278-008-9103-6