Quantum Safe Cryptography For Future Proof Security In Healthcare Cloud Computing

Abstract

With the rapid speed of quantum computing conventional cryptographic methods such as RSA and ECC are
becoming increasingly vulnerable to attacks leaving sensitive healthcare data in cloud environments at risk.
This paper discusses transition to quantum-safe cryptography to ensure future-proof security for healthcare
cloud computing. It includes scope at confluence of post-quantum cryptography, cloud computing and
cybersecurity with an emphasis on protecting medical data from forthcoming threats. It deals with
cryptographic resilience in cloud infrastructure for healthcare by combining novel encryption algorithms. It
also discusses authentication and secure storage methods geared towards privacy-protecting medical data
transfer. Traditional cryptographic methods like RSA-2048, AES-256 and ECC-256 are scanned for
susceptibility to quantum attacks. To overcome these limitations, we present a secure framework comprising
Kyber and NTRU for key exchange, McEliece for encryption, Rainbow signatures for authentication and Fully
Homomorphic Encryption for security of cloud storage. Zero-Knowledge Proof enhances authentication and
eliminate password vulnerabilities. Performance analysis shows that proposed quantum-safe solutions achieve
increased level of security (256+ bits) with moderate computational complexity. Experimental results show that
while post-quantum cryptographic algorithms are accompanied by increased key sizes and processing times,
their increased quantum attack resistance makes them essential for cloud-based healthcare systems security.
Findings highlight necessity of moving towards quantum-resistant security models to secure healthcare
infrastructures against impending quantum threats.