In order to build a secure and an efficient scheme even in the presence of quantum computers, we propose an improved authenticated key agreement scheme based on NTRU for applications in e-health platforms. In fact, user authentication and key agreement are important cryptographic primitives that allow two entities to establish a secure and an authenticated channel over insecure networks. Currently, the security of the most of these primitives relies on RSA or ECC standards, which ensure high security levels. Unfortunately, all cryptosystems based on factorization problems (e.g., RSA) or the discrete logarithm problem in finite groups (e.g., ECC) will be vulnerable to quantum attacks in the next few years due to Shor's algorithm. Security and efficiency analysis show that the proposed scheme can resist various attacks, including quantum attacks while preserving efficiency.
展开▼
