Enhancing Security and Privacy of Healthcare Data Using Hybrid Cryptographic Scheme for Cloud-Based Environment

Hospitals are progressively adopting cloud computing to store and manage patient data, enhancing accessibility and collaboration. The sensitive nature of health information necessitates robust security measures to avert unauthorized access and potential breaches. This study introduces a hybrid methodology that combines the Blowfish algorithm with Elliptic Curve Cryptography (ECC) to protect data during cloud transmission. ECC is used as an asymmetric encryption technique for key exchange, whereas Blowfish serves as a symmetric encryption strategy for data encryption. Combining asymmetric and symmetric cryptography makes sure that security is higher and key management is more efficient. We commend ECC for its exceptional performance and enhanced security. Blowfish is optimal for cloud data encryption because of its swift encryption and decryption rates. It employs various key lengths, rendering it resilient against brute force assaults and safeguarding the secrecy of stored data. Blowfish enables robust encryption mechanisms to protect data during cloud transport from unauthorized access. We assessed the efficacy of this hybrid encryption method by conducting various tests across numerous data clouds. The findings indicate that the suggested hybrid security scheme outperforms the current schemes regarding computing time.