哈希值还可用于验证通过不安全信道发送的数据的完整性。
Hash values are also useful for verifying the integrity of data sent through insecure channels.
该方案有如下特点：（1）无需在秘密分发者与秘密分享者之间建立安全信道；
This scheme has the following properties:(1)It is not necessary to construct a secure communication channel between the dealer and the participants.
分析表明所提方案能够满足强代理签名方案的安全需求，同时不需要使用安全信道。
Analysis shows that the proposed scheme satisfies all security properties of the strong proxy signature scheme and does not need a secure channel.
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