两种方案的安全性都是基于椭圆曲线离散对数问题的难解性。
Both of their security are based on the intractability of elliptic curve discrete logarithm problem.
辫子群上公钥密码系统的安全性不能仅仅依靠共轭问题的难解性。
The security of a braid public key cryptosystem can't depend only on the hardness of conjugacy problems.
该方案基于CDHP的难解性和DDHP的可计算性，它满足群签名的基本特性。
This scheme is base on difficulty of CDHP and calculability of DDHP, and it is provided with the main properties of group signature.
超椭圆曲线密码体制是以超椭圆曲线离散对数问题的难解性为基础的，具有安全性高、操作数短等优点，相对于其他密码体制有明显的优势。
The hyperelliptic curve cryptosystem is based on the hyperelliptic curve discrete logarithm problem, and has the higher safety and the shorter operands compared to other cryptosystems.
我们会了解到，时间穿梭矛盾意味着存在一种改变我们过去的可能性，这一矛盾似乎很难解决，只因为它与我们自身自由意愿的定义相冲突。
As we will see, the time travel paradox-the possibility of changing our past-seems intractable only because it conflicts with our notion of ourselves as beings with free will.
特别是与陌生人一次性的交往，就更难解释为什么人类没有选择自私的行为。
And when those encounters are one-off events with strangers it is even harder to explain why humans do not choose to behave selfishly.
很难解释颠覆性带来的好处。
围绕服务调用的安全性也是一个很难解决的问题。
Security around service invocations is also a challenging endeavor.
人类祖先的这些出其不意的复杂性让进化生物学的研究遭遇到了一些难解之谜。
The unexpected complexity of man's ancestor raises some troubling questions for evolutionary biology.
由于“设计”概念本身的多义性，而使得设计语言更为复杂难解。
Because of the varieties of the "design" concept itself, design language becomes more complicated.
文章设计了一个新的椭圆曲线密钥交换协议，分析了其安全性，证明了在ECDDHP难解的前提下，该协议是安全的AK协议。
We propose a new elliptic curve key-exchange protocol, analyze its security and prove that assuming ECDDHP is hard to solve, it is a secure AK protocol.
因声区转换及混声的特殊性，男声的高音演唱问题一直是比较难解决的。
Because of the particularity of acoustic area transition and mixed sound, the problem of tenor is always difficult to solve.
在机器人的位置色标检测系统中，如何提高颜色识别的鲁棒性是一个比较难解决的问题。
It's a difficult problem how the positional color code tracking system of robot recognizes color target robustly and quickly.
但这一观点很难解释日本语言的特殊性。
But this view is difficult to reconcile with the distinctiveness of the Japanese language.
目前的数字签名和代理数字签名方案大都是基于普通离散对数难解问题上的，其安全性已经不能满足人们的需求。
At present, digital signature and proxy digital signature schemes are almost based on ordinary separate logarithm question. And the security of the schemes couldn't satisfy the request of the people.
疑难解答花费的时间比由于异常的系统性预期报道，只涉及了业主的LG双擎天柱的一部分。
Troubleshooting is taking longer than expected because of the systematic nature of the anomalies reported, involving only a part of owners of LG Dual Optimus.
安全性分析表明，在假设CDH问题是难解的情况下，该方案在随机预言模型中是可证安全的。
The performance analysis results show that the scheme is provably secure in the random oracle model under the CDH problem assumption.
归并法将可选性归结于不同输入项特征值的差别，但是二元对立值很难解释多于两种选择的可选性现象。
The neutralization approach attributes optionality to the value difference of input, but the binary value system offers no explanation to optionality with three and more options.
鉴于肥胖的多因性和复杂性及个体差异性，单一的技术和产品很难解决肥胖问题。
In view of obesity and complex nature of many social and individual differences, a single technology and products is difficult to solve the obesity problem.
尽管地震学家孙晓东承认这种神秘性是真正复杂难解的问题，他和他的地震学家朋友保罗·理查德已经想过如何解开这个迷团。
Although seismologist Xiaodong Song acknowledged the mystery is really a complicated problem, he and fellow seismologist Paul Richards have managed to unravel it.
尽管地震学家孙晓东承认这种神秘性是真正复杂难解的问题，他和他的地震学家朋友保罗·理查德已经想过如何解开这个迷团。
Although seismologist Xiaodong Song acknowledged the mystery is really a complicated problem, he and fellow seismologist Paul Richards have managed to unravel it.
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