Name
Title | ||
|---|---|---|
A Generic Construction of Integrated Secure-Channel Free PEKS and PKE and its Application to EMRs in Cloud Storage. |
Abstract | ||
|---|---|---|
To provide a search functionality for encrypted data, public key encryption with keyword search (PEKS) has been widely recognized. In actual usage, a PEKS scheme should be employed with a PKE scheme since PEKS itself does not support the decryption of data. Since a naive composition of a PEKS ciphertext and a PKE ciphertext does not provide CCA security, several attempts have been made to integrate PEKS and PKE in a joint CCA manner (PEKS/PKE for short). In this paper, we further extend these works by integrating secure-channel free PEKS (SCF-PEKS) and PKE, which we call SCF-PEKS/PKE, where no secure channel is required to send trapdoors. We give a formal security definition of SCF-PEKS/PKE in a joint CCA manner, and propose a generic construction of SCF-PEKS/PKE based on anonymous identity-based encryption, tag-based encryption, and one-time signature. We also strengthen the current consistency definition according to the secure-channel free property, and show that our construction is strongly consistent if the underlying IBE provides unrestricted strong collision-freeness which is defined in this paper. We also show that such an IBE scheme can be constructed by employing the Abdalla et al. transformations (TCC 2010/J. Cryptology 2018). Finally, as an application of SCF-PEKS/PKE, we strengthen the security of encrypted Electronic Medical Record (EMR) system proposed by Guo and Yau (J. Medical Sys. 2015). |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1007/s10916-019-1244-2 | Journal of medical systems |
Keywords | Field | DocType |
Encrypted EMR,Integration of PEKS and PKE,Joint CCA security,PEKS,Secure-channel free | Secure channel,Computer security,Cryptography,Keyword search,Encryption,Ciphertext,Medicine,Public-key cryptography,Cloud storage | Journal |
Volume | Issue | ISSN |
43 | 5 | 1573-689X |
Citations | PageRank | References |
1 | 0.35 | 0 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Tatsuya Suzuki | 1 | 1 | 1.71 |
| Keita Emura | 2 | 316 | 36.97 |
| Toshihiro Ohigashi | 3 | 73 | 12.10 |