ID |
原文 |
译文 |
19745 |
攻击24轮Simeck48的数据复杂度为246,时间复杂度为295,存储复杂度为282.52;攻击29轮Simeck64的数据复杂度为263,时间复杂度为2127.3,存储复杂度为2109.02。 |
The data,time and memory complexity of attacking 24-round Simeck48 are 246, 295 and 282.52 while the data, time andmemory complexity of attacking 29-round Simeck64 are 263, 2127.3 and 2109.02. |
19746 |
与Simeck算法已有积分攻击的结果相比,该文对Simeck48和Simeck64积分攻击的轮数分别提高了3轮和5轮。 |
Compared with the known results of the integral attackon Simeck, the number of rounds of the integral attacks on Simeck48 and Simeck64 is increased by 3-round and5-round, respectively. |
19747 |
大多数可搜索加密方案仅支持对单关键词集的搜索,且数据使用者不能迅速对云服务器返回的密文进行有效性判断,同时考虑到云服务器具有较强的计算能力,可能会对关键词进行猜测,且没有对数据使用者的身份进行验证。 |
Most existing searchable encryption schemes only support the search for keyword sets, and the datausers can not quickly identify the file keyword information returned by the server. Meanwhile, considering the server has strong computing power, it may judge keyword information from single keywords and the identity of the data consumer is not verified. |
19748 |
方案中数据使用者与数据属主给授权服务器进行授权,从而验证数据使用者是否为合法用户; |
In this paper, the data user and data owner are delegated server to verify whether the data ueer is a legitimate user; |
19749 |
若验证通过,则授权服务器利用授权信息协助数据使用者对云服务器返回的密文进行有效性检测; |
if legal, the delegated server can detect the validity of the return ciphertext with data user. |
19750 |
同时数据使用者利用服务器的公钥和伪关键词对关键词生成陷门搜索凭证,从而保证关键词的不可区分性。 |
The data user uses the server public key, keywords and pseudo-keywords to generate trapdoor, in order to ensure the indistinguishable of the keywords, a delegated multi-keyword searchable encryption scheme is designed, which is resistant to keyword guessing of data user authentication. |
19751 |
同时数据属主在加密时,利用云服务器的公钥、授权服务器的公钥以及数据使用者的公钥,可以防止合谋攻击。 |
Meanwhile,when the data owner encrypts, the public key of the cloud server, the delegated server, and the data user canbe used to prevent collusion attacks. |
19752 |
最后在随机预言机模型下证明了所提方案的安全性,并通过仿真实验验证,所提方案在多关键词环境下具有较好的效率。 |
In the random oracle model the security of the proposed scheme is proved.The experiment results show that the scheme is efficient under the multi-keyword environment. |
19753 |
该文利用电磁超表面与微带天线的结构高度相似性,设计了2种辐射特性几乎一致且具有反射相位差异的超表面天线,通过将2种天线单元进行棋盘布阵,在x极化波和y极化波照射下分别利用相位相消及匹配负载吸收实现了天线阵带内散射能量的抑制。 |
A broadband metasurface antenna array with wideband low Radar Cross Section (RCS) is proposed.Two kind metasurface antennas with nearly the same radiation performance are designed and fabricated in achessboard configuration. For x -polarized incidence, the reflected energy from the two elements is dissipated based on destructive phase difference. For y -polarized incidence, the incident energy is absorbed by matchingload. By this means, inherent wideband low RCS is achieved for both polarizations without redundant structures. |
19754 |
实测与仿真结果表明:该超表面天线工作于6.0~8.5 GHz。 |
The proposed antenna array is fabricated and measured. Simulated and measured results show thatthe working frequency band is 6.0~8.5 GHz. |