An Enhanced Erasure Code-Based Security Mechanism for Cloud Storage

Abstract

Cloud computing offers a wide range of luxuries, such as high performance, rapid elasticity, on-demand self-service, and low cost. However, data security continues to be a significant impediment in the promotion and popularization of cloud computing. To address the problem of data leakage caused by unreliable service providers and external cyber attacks, an enhanced erasure code-based security mechanism is proposed and elaborated in terms of four aspects: data encoding, data transmission, data placement, and data reconstruction, which ensure data security throughout the whole traversing into cloud storage. Based on the mechanism, we implement a secure cloud storage system (SCSS). The key design issues, including data division, construction of generator matrix, data encoding, fragment naming, and data decoding, are also described in detail. Finally, we conduct an analysis of data availability and security and performance evaluation. Experimental results and analysis demonstrate that SCSS achieves high availability, strong security, and excellent performance.

Enhancing Data Security in Cloud Computing: A Comparative Analysis of Encryption Techniques

“…Since Z and L have exactly one common divisor, we may calculate N as the residual after dividing by L, and then find the multiplicative inverse of N modulo L, denoted by d. Therefore, N and X stand for the public keys, and d for the private one. If Z and M have the same greatest common divisor, then the process is repeated to find d, the multiplicative inverse of N modulo M. This is done in the same way as when Z and M have different greatest common divisors [12]. As a result, we set up the public keys as N and Y and keep the secret key as d. Due to the uncertainty of L and M, attempts to compromise the private key will include breaking the public key cryptosystem.…”

Efficient Dynamic Bloom Filter Hashing Fragmentation for Cloud Data Storage

“…But, security of the cloud data storage against the pollution attacks was not considered. An enhanced security mechanism based on erasure code was developed in [21] to attain higher data availability, security in cloud data storage.…”