关键词: 网络化制造, 信息安全, 数字签名, 门限, 信息隐藏, 指定验证者

Abstract: To satisfy essential security requirement for information exchange in networked manufacturing environment, a new signature scheme with more functions was proposed. By combining threshold、message hiding and verifier designation, the new scheme not only had the fuction of threshold signature and realizing multi-person signing of the document, but also had the function of hiding message and designating message recuperator and verifier.This new scheme could be used to guarantee the authenticity and origin of sharing information by multi-user cooperation. The security of this scheme was proved under the random oracle model, and religious mathematic deduction as well as the lower limit of security was presented. Finally, by comparing with similar scheme, the feasibility and efficiency of new signature scheme was illustrated.

Key words: networked manufacturing, information security, digital signature, threshold, message hidden, designated-verifier