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。
The result shows that brake efficiency and the security of the vehicle increase.
所得结果表明，盘式制动器的制动效率得到提高，保证了汽车行驶的安全性。
The system features low cost, high efficiency and good security.
该系统成本低，效率高，安全保密性好。
This product has power efficiency, good security and high reliability.
该智能燃气表具有功耗低、安全性好、可靠性高的特点。
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。
The scheme has high security class and efficiency used in signature.
实践证明该体制具有较高的安全性，而且签名效率也较高。
The invention has the advantages of reasonable structure, low cost, high efficiency, security and efficiency.
本发明结构合理，低成本、高效率、安全有效。
The invention has the advantages of reasonable structure, low cost, high efficiency, security and efficiency.
本发明结构合理，低成本、高效率、安全有效。
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