Securing Cloud Data: A Comprehensive Review of Hybrid Cryptography and Analysis of AES, Blowfish, and Twofish Algorithms

Cryptography is crucial for secure cloud computing because it addresses data security issues in shared environments, as well as the challenges that arise when companies transition from traditional storage to cloud storage. So, cloud service providers need to use sophisticated techniques, such as symmetric and asymmetric key cryptography, to protect sensitive data. This article looks at several cryptographic techniques, highlighting the better efficiency of hybrid cryptography, which combines symmetric and asymmetric cryptography, and pointing out the flaws of current approaches. According to this study, Advanced Encryption Standard (AES) is particularly notable for its effectiveness, speed, and strong security, which makes it perfect for real-time and cloud storage applications. Researchers frequently pair AES with Rivest-Shamir-Adleman and Elliptic Curve Cryptography algorithms, emphasising that alternatives like Twofish and Blowfish provide reliable security and effectiveness. In this study, a 128-bit key was used to evaluate the performance of Blowfish, Twofish, and AES. The results demonstrated that AES is more appropriate for cloud data security and safe data transfer than Twofish and Blowfish because it processes data faster and has the shortest processing time. This study sets the stage for creating enhanced algorithms to improve cloud data security and address potential future cryptanalytic attacks.