AUTHOR=Golla Bala Renuka , Gnanavel S. 

TITLE=BC2P-1305: an enhanced data security in cloud computing network using blockchain based ChaCha20-Poly1305 cryptography

JOURNAL=Frontiers in Blockchain

VOLUME=Volume 8 - 2025

YEAR=2025

URL=https://www.frontiersin.org/journals/blockchain/articles/10.3389/fbloc.2025.1636056

DOI=10.3389/fbloc.2025.1636056

ISSN=2624-7852

ABSTRACT=As cloud computing becomes more prevalent, the need for robust data security to address issues related to confidentiality, integrity, and access control has grown significantly. This paper introduces BC2P-1305, a cloud security framework that combines blockchain technology with the ChaCha20-Poly1305 cryptographic algorithm. The framework utilizes ChaCha20-Poly1305 for efficient encryption and authentication, offering low latency and strong protection against cryptographic attacks. Blockchain is employed for secure, tamper-proof metadata storage and integrity checks, while smart contracts automate and enforce detailed access control policies. Additionally, a secure key management system ensures that decryption keys are provided only to authorized users. Experimental results show that BC2P-1305 outperforms current technologies such as AES-GCM and RSA (2048-bit) across several performance metrics. Encryption latency is reduced by 40% compared to AES-GCM and 75% compared to RSA, while decryption latency is 35% and 80% lower, respectively. The blockchain transaction processing time using a Proof-of-Authority consensus mechanism is 60% faster than that of Proof-of-Work systems. Furthermore, BC2P-1305 shows a 30% reduction in CPU and memory usage and a 20% improvement in throughput over AES-GCM. These findings demonstrate that BC2P-1305 is scalable, efficient, and well-suited for securing cloud data, offering a promising solution to modern cloud security challenges.