In order to guarantee the user's privacy and the integrity of data when retrieving ciphertext in an untrusted cloud environment, an improved ciphertext retrieval scheme was proposed based on full homomorphic encry...In order to guarantee the user's privacy and the integrity of data when retrieving ciphertext in an untrusted cloud environment, an improved ciphertext retrieval scheme was proposed based on full homomorphic encryption. This scheme can encrypt two bits one time and improve the efficiency of retrieval. Moreover, it has small key space and reduces the storage space. Meanwhile, the homomorphic property of this scheme was proved in detail. The experimental results and comparisons show that the proposed scheme is characterized by increased security, high efficiency and low cost.展开更多
The research on Trilingual Teaching Model in ethnic areas has become a hot spot.By analyzing the data of the questionnaire,this paper discusses the teachers’instructional intervention model,based on the law of mother...The research on Trilingual Teaching Model in ethnic areas has become a hot spot.By analyzing the data of the questionnaire,this paper discusses the teachers’instructional intervention model,based on the law of mother tongue acquisition.Trilingual teachers should highlight the role of reading in vocabulary learning and even in improving reading ability.The law of mother tongue acquisition can be one of the main strategies to solve the problems in Tibetan students’English learning.展开更多
基金Supported by the Research Program of Chongqing Education Commission(JK15012027,JK1601225)the Chongqing Research Program of Basic Research and Frontier Technology(cstc2017jcyjBX0008)+1 种基金the Graduate Student Research and Innovation Foundation of Chongqing(CYB17026)the Basic Applied Research Program of Qinghai Province(2019-ZJ-7099)
文摘In order to guarantee the user's privacy and the integrity of data when retrieving ciphertext in an untrusted cloud environment, an improved ciphertext retrieval scheme was proposed based on full homomorphic encryption. This scheme can encrypt two bits one time and improve the efficiency of retrieval. Moreover, it has small key space and reduces the storage space. Meanwhile, the homomorphic property of this scheme was proved in detail. The experimental results and comparisons show that the proposed scheme is characterized by increased security, high efficiency and low cost.
基金This work is supported by National Social Science Project on Study on the Influencing Factors of the Trilingual Teaching Model in Qinghai Ethnic Areas From a Multicultural Perspective(19BYY223).
文摘The research on Trilingual Teaching Model in ethnic areas has become a hot spot.By analyzing the data of the questionnaire,this paper discusses the teachers’instructional intervention model,based on the law of mother tongue acquisition.Trilingual teachers should highlight the role of reading in vocabulary learning and even in improving reading ability.The law of mother tongue acquisition can be one of the main strategies to solve the problems in Tibetan students’English learning.
