How to ensure confidentiality , authenticity , incontestability , and integrality of shared information is a practical and important subject 如何确保网上共享信息的保密性、真实性、不可否认性和完整性，是一个现实而又重要的问题。
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It uses xml encryption , xml signature and ssl technology to design and implement the solution of transmission of tender and evaluation documents separately which are based on the different security requirement . the solutions guarantees the secrecy , incontestability , integrity and identity authentication in the transmission of the bidding documents 在标书传递子系统中根据不同的安全需求,使用xml加密、 xml签名和ssl技术分别为投标书和评标书设计并实现了安全传递的方案,确保了标书传递中的保密性、完整性、长期不可否认性、时间有效性和用户身份正确性。
