基于区块链的网络化协同设计数据存储与管理方案
Blockchain Based Secure Storage and Management Scheme for Networked Collaborative Design Data

针对网络化协同设计过程中数据存储、共享或交互过程中权限管控、核心数据保护等方面存在的问题，提出基于区块链的数据可信存储和管理方案。采用IPFS文件系统存储文件，利用无证书密码体制对文件哈希摘要进行加密，将加密的哈希摘要上链存储，结合智能合约实现数据的可信传输、共享、存证及操作追溯。通过IPFS文件系统和区块链的结合，实现网络化协同设计数据的安全存储和管理。分析表明，该方案在数据安全性、访问控制、数据存证追溯等方面具有明显优势，能够满足多方协同设计场景数据保护的需要，且具有良好的系统性能。
In response to the challenges in data storage, sharing, permission control, and core data protection during the networked collaborative design process, a solution based on blockchain for trustworthy data storage and management is proposed. The IPFS file system is employed to store files, and a certificate-less password system is used to encrypt the hash digest of the files. The encrypted hash digest is then stored on the blockchain, and, in conjunction with smart contracts, achieves trust-worthy transmission, sharing, certification, and operation traceability of data. By combining IPFS file system and blockchain, the solution achieves secure storage and management of networked collaborative design data. Analysis shows that this approach has significant advantages in data security, access control, data certification traceability, and is capable of meeting the data protection needs in multi-party collaborative design scenarios with good system performance.