一种云计算环境下的加密模糊检索方案

Vague-keyword Search under Encrypted Environment in Cloud Computing

随着移动终端的发展,云计算也越来越普及,很多敏感数据被集中存储到云存储器上。为了保证数据的私密性,这些数据在上传时应该经过加密,这就使得传统数据检索方案的可行性降低。一些在加密环境下的数据检索方案,只能处理准确的关键字检索,对于拼写错误、格式错误的情况则无法进行正常查询,因此不适用于云计算。提出了一种基于k-gram索引的模糊关键字在加密环境下的检索方案。这种方案可以提供一种安全、高效的数据存取服务。

As there is a significant development in potable devices market recently,cloud computing is more commonly implemented.Confidential datas are accumulated and stored in cloud servers.To ensure the datas are secured,they should be encrypted when being uploaded,which makes efficient searching among them a much complicated task.Traditional searching programmes in encrypted environments are able to find the data only if the keywords is exactly correct,but will fail if spelling errors or format errors occur.These programmes are hence not suitable for cloud computing.We introduced a high efficiency programme which can deal with even vague keyword searching in the encrypted environment.