Analysis testifies its security and efficiency.
分析表明，方案是安全的、高效的。
Finally its security and efficiency character are analyzed.
最后对方案的安全性和效率做了分析。
But the key is relatively difficult to manage, which will influence the security and efficiency.
但对称加密的密钥管理较困难，这会成为影响安全和效率的一个因素。
But the key is relatively difficult to manage, which will influence the security and efficiency.
但对称加密的密钥管理较困难，这会成为影响安全和效率的一个因素。
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