ID 原文 译文
46256 首先，对一种指定验证者聚合签名方案进行安全性分析，通过给出 2 种具体攻击方法，指出该方案不满足签名不可伪造性。 A security analysisfor a certificateless aggregate signature scheme with universal designated verifier was firstly provided, and two attackmethods to demonstrate that their scheme was forgeable was presented.
46257 为了增强安全性，提出一种新的无证书广义指定验证者聚合签名方案，并在随机预言机模型下证明该方案是安全的。 To enhance security, a new certificateless aggregate signature scheme with universal designated verifier was proposed, and then the security of the scheme in the random oracle model was proved.
46258 与原方案相比，新方案在解决安全缺陷的同时大大降低了计算开销。 The performance of our proposed scheme was finally evaluated. Compared with the original scheme, the proposed scheme fixes the security flaws and the total computational cost is greatly reduced.
46259 针对全变分 Retinex 模型使用反射分量的全变分作为正则项存在的不足，引入相对梯度并构建扩展的全变分正则项，提出一种新的 Retinex 变分模型。 In view of the shortcomings of the total variational Retinex model which use the total variation (TV) of the re-flection as the regularization. An extension of TV regularization with the concept of relative gradient was introduced and finally a new variational Retinex model was proposed.
46260 相比于变分 Retinex 模型、全变分 Retinex 模型，该模型获取的照度分量更加光滑，同时反射分量能够分辨更多结构信息和细节要素。 Compared with variational Retinex and total variational Retinexmodel, the proposed model can preserve the estimated reflectance with more details as well as the more smoothed illumination.
46261 进而，提出一种综合考虑照度分量和反射分量的图像增强模型。 Further, a new integrated image enhancement model considering both the illumination and the reflectance was proposed.
46262 通过调整模型参数，可有效应用于高动态范围图像色调映射、非均匀照度增强等图像处理领域。 By adjusting the model parameters, the proposed model can be effectively applied to high dynamic range image tone mapping and non-uniform illumination enhancement.
46263 与其他算法的对比显示，该图像增强模型能够有效处理上述问题并取得较好的效果。 Compared with other algorithms, the proposed model can better handle the above image enhancement problems.
46264 针对格上基于身份的分级加密（HIBE, hierarchical identity-based encryption）体制中用户密钥提取算法复杂度过高和陷门尺寸膨胀率大的问题，提出一种新的 HIBE 方案。 Aiming at the high complexity in user’s private key extraction and large expansion ratio of trapdoor size in previous hierarchical identity-based encryption (HIBE) schemes, a new HIBE scheme was proposed.
46265 首先，利用隐式扩展法对 HIBE 方案中的原像采样算法优化，然后，结合 MP12 陷门派生算法提出一种高效的 HIBE 用户密钥提取算法， The implicit extension method to improve preimage sampling algorithm was used, and then combined the improved algorithm with MP12trapdoor delegation algorithm to construct an efficient HIBE user’s private key extraction algorithm.