阈下的隧道被用来把一条秘密消息送到授权的接收装置;消息不能被任何非法的接收装置发现。指明的验证器签名(DVS ) 提供一条消息的认证,我们与消息恢复机制设计一个 DVS 计划并且把它用作一条阈下的隧道。以便安全地在 n 用户之中分享一条消息并且允许 t 或更多的用户能重建在动态组的秘密,我们联合两个阈下的隧道并且(t, n ) 阀值密码学。然后,我们建议了罐头基于消息恢复把一条阈下的消息传送到一组用户的阈下的隧道指明了的阀值验证器签名。重建阈下的消息依靠 t 或更多的用户 inthegroup 和他们的合作能验证阈下的消息的有效性。建议计划安全、有效的安全和表演分析表演。
The subliminal channel is used to send a secret message to an authorized receiver; the message cannot he discovered by any unauthorized receivers. Designated verifier signature (DVS) provide authentication of a message, we design a DVS scheme with message recovery mechanism and use it as a subliminal channel. In order to share a message among n users securely and allows t or more users can reconstruct the secret in dynamic groups, we combine both subliminal channel and (t, n) threshold cryptography. Then we proposed a threshold subliminal channel which can convey a subliminal message to a group of users based on message-recovery designated verifier signatures. Reconstructing the subliminal message relies on the cooperation of t or more users in the group and they can verify the validity of the subliminal message. Security and performance analysis show that the proposed scheme is secure and efficient.