High-Secure Low-Latency Ring-LWE Cryptography Scheme for Biomedical Images Storing and Transmitting

In this paper, a low-latency scheme for biomedical images storing and transmitting using ring-learning with errors (ring-LWE) cryptography is presented. The proposed scheme significantly reduces the encryption time and decryption time for biomedical images compared to existing works. Particularly, the encryption time and decryption time of proposed ring-LWE scheme for biomedical images can be reduced up to 70.1% and 52.7% compared to previous studies. In addition, by storing biomedical images under encrypted form at the central server, biomedical data are completely protected. The analysis in similarity and entropy of encrypted image proves the outperformance of the proposed scheme in terms of security level compared to conventional schemes.