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中文摘要：
可搜索加密是解决云端不可信条件下加密数据安全云检索的重要方法。针对可搜索公钥加密、可搜索对称加密这2种可搜索加密类型,分别介绍了近几年来学术界的主要成果及其存在的问题、解决方法。在可搜索公钥加密领域,主要介绍了高安全条件下降低检索复杂度的方法;在可搜索对称加密领域,主要介绍了高安全条件下支持物理删除的方法。
英文摘要：
Searchable encryption has been recognized as a promising method to achieve the secure cloud search. According to the types of encryption keys, searchable encryption can be divided into searchable public-key and symmetric-key encryptions. The existing and well-known schemes of those two kinds of encryptions, their limitations, and the corresponding solutions were introduced. Specifically, two works under the condition of high security were introduced： one was to reduce the search complexity of searchable public-key encryption; the other one was to achieve the physical deletion of searchable symmetric-key ciphertexts.
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