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@article{174494,
        author = {Harish Kumar S T and Mr.Rajasekaran T and Ajaykumar M and Arjun S},
        title = {Secure Blockchain Based File Sharing},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {11},
        number = {10},
        pages = {4487-4491},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=174494},
        abstract = {Decentralized secure file sharing is a challenging task, especially ensuring access control and anonymity preservation. In this paper, a blockchain-based file-sharing system is presented that makes use of the InterPlanetary File System (IPFS) for off-chain storage and AES-256 encryption to provide stronger security. The system architecture incorporates smart contracts in Solidity that provide robust access control with immutability and transparency characteristics.
Conventional file-sharing systems using central storage possess certain weaknesses regarding breaches, misuse, and the existence of single points of failure. The approach that we suggest overcomes these weaknesses by applying end-to-end encryption before the data is uploaded to IPFS, thereby securing the information in case it finds its way to unauthorized users. Moreover, file permission management can be achieved using the application of smart contracts to ensure that the file data finds its way to authorized users in a way that facilitates safe decryption and download by both parties. Apart from enhancing the privacy, security, and integrity of the data, the decentralized nature of the system eliminates the need for third-party storage providers, thereby offering a secure and resilient solution for file sharing.},
        keywords = {Access control, AES-256 encryption, Blockchain, Data privacy, Decentralized file sharing, End-to-end encryption, IPFS, secure storage, smart contracts, solidity,},
        month = {March},
        }