基于PKEKS的关键字安全的可检索加密技术

Keyword Security Retrievable Encryption Technology Based on PKEKS

支持关键字检索的公钥加密(PKEKS)技术的信息加密方案初步实现了收信端检索并解密由第三方发信端加密并上传的密文信息的需求,但其在系统中包括不安全的服务器端时,依然存在可能被关键字猜测漏洞进行攻击的问题。针对这类问题的解决,本文在其方案的基础之上,提出了通过在系统中添加可信赖的安全中心生成可信参数,并将生成的可信参数一起加入到加密过程的方法。我们将这种方法命名为关键字安全的可检索加密技术(SEBSK)。经过分析,这种方法可以有效解决此类问题。

The information encryption scheme of Public Key Encryption with Keyword Search (PKEKS) technology initially realizes the requirement for the recipient to retrieve and decrypt the ciphertext information encrypted and uploaded by the third party sender. However, when the system includes the insecure server side, there is still a problem that may be attacked by keyword guessing vulnerabilities.In order to solve this kind of problem, on the basis of the scheme, we propose a method to generate trusted parameters by adding a trusted security center to the system and add the generated trusted parameters to the encryption process. We named this method Searchable Encryption Based on Safe Keywords (SEBSK).After analysis, this method can effectively solve such problems.