A Self-sovereign Identity Authentication Scheme for Multi-level Supply Chain Finance

Aiming at the problem that it is difficult to balance the lack of trust and identity data autonomy of end enterprises in multi-level supply chain finance, a self-sovereign identity authentication scheme for multi-level supply chain finance was proposed. The verifiable credentials are used to store the plaintext data of the enterprise identity, and the enterprise privately stores the data, which enhances the autonomy of the enterprise on the identity data. At the same time, in order to ensure the authenticity and integrity of identity data, the hash summary of the verifiable credential is stored in the evidence on the blockchain, and the digital signature is used to complete the comparison between the evidence and the verifiable credential, so as to verify the authenticity of the enterprise identity, so as to enhance the trust of financial institutions in multi-level supply chain finance to the end enterprise. The proposed scheme can improve the enterprise's autonomy of identity data while ensuring the trust of end enterprises. Based on the FISCO BCOS blockchain platform, the proposed scheme is simulated and implemented to verify the feasibility of the scheme. paper.