SecureShare: Secure Decentralized File Sharing Using Blockchain and IPFS

The SecureShare system demonstrates an effective approach for building a secure, transparent, and decentralized file-sharing platform using blockchain technology and the InterPlanetary File System (IPFS). The proposed system successfully addresses the limitations of traditional centralized storage platforms, including unauthorized access, data breaches, dependency on third-party providers, and single points of failure. By integrating AES encryption with decentralized storage, SecureShare ensures that files remain confidential and protected throughout the storage and sharing process. The use of IPFS enables distributed file storage with improved availability and reliability, while Ethereum smart contracts provide immutable ownership verification and secure access control. Additionally, Pinata pinning services enhance file persistence and long-term accessibility within the decentralized storage network. The implementation and testing results confirm that the system operates efficiently across different stages including file upload, encryption, blockchain verification, access management, and secure retrieval. Smart contracts successfully automate access control mechanisms, enabling transparent and tamper-proof file sharing without centralized intermediaries. Overall, SecureShare demonstrates the practical application of blockchain, cryptographic security, and decentralized storage technologies in modern file-sharing systems. The proposed architecture provides improved security, transparency, reliability, and user ownership, making it suitable for applications where data confidentiality and integrity are critical.

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