Public Key Encryption with Keyword Search (PEKS) scheme enable one to search the encrypted data with a keyword without revealing any information. The concept of a PEKS scheme was proposed by Boneh et al. in 2004 and Baek et al. who extended PEKS scheme into a secure channel free PEKS scheme (SCF-PEKS) which removes the assumption, a secure channel between users and a server. In this paper, we show an overview of six existing security models of PEKS/SCF-PEKS scheme and conclude flve security requirements that must satisfy to construct a secure PEKS/SCF-PEKS scheme. Then we compare the security and e‐ciency of the security models and discuss the future researches of PEKS/SCF-PEKS.
['Shih-Ting Hsu', 'Chou Chen Yang', 'Min-Shiang Hwang']
A Study of Public Key Encryption with Keyword Search