Abstract
Order-revealing encryption is a useful cryptographic primitive that provides range queries on encrypted data since anyone can compare the order of plaintexts by running a public comparison algorithm. Most studies on order-revealing encryption focus only on comparing ciphertexts generated by a single client, and there is no study on comparing ciphertexts generated by multiple clients. In this paper, we propose the concept of multi-client order-revealing encryption that supports comparisons not only on ciphertexts generated by one client but also on ciphertexts generated by multiple clients. We also define a simulationbased security model for multi-client order-revealing encryption. The security model is defined with respect to the leakage function which quantifies how much information is leaked from the scheme. Next, we present two specific multi-client order-revealing encryption schemes with different leakage functions in bilinear maps and prove their security in the random oracle model. Finally, we give the implementation of the proposed schemes and suggest methods to improve the performance of ciphertext comparisons.
| Original language | English |
|---|---|
| Journal | IEEE Access |
| DOIs | |
| Publication status | Accepted/In press - 2018 Aug 11 |
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Keywords
- Bilinear maps
- Encryption
- Medical services
- Multi-client order-revealing encryption
- Order-revealing encryption
- Ores
- Servers
- Symmetric-key encryption
ASJC Scopus subject areas
- Computer Science(all)
- Materials Science(all)
- Engineering(all)
Cite this
Multi-Client Order-Revealing Encryption. / Eom, Jieun; Lee, Dong Hoon; Lee, Kwangsu.
In: IEEE Access, 11.08.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Multi-Client Order-Revealing Encryption
AU - Eom, Jieun
AU - Lee, Dong Hoon
AU - Lee, Kwangsu
PY - 2018/8/11
Y1 - 2018/8/11
N2 - Order-revealing encryption is a useful cryptographic primitive that provides range queries on encrypted data since anyone can compare the order of plaintexts by running a public comparison algorithm. Most studies on order-revealing encryption focus only on comparing ciphertexts generated by a single client, and there is no study on comparing ciphertexts generated by multiple clients. In this paper, we propose the concept of multi-client order-revealing encryption that supports comparisons not only on ciphertexts generated by one client but also on ciphertexts generated by multiple clients. We also define a simulationbased security model for multi-client order-revealing encryption. The security model is defined with respect to the leakage function which quantifies how much information is leaked from the scheme. Next, we present two specific multi-client order-revealing encryption schemes with different leakage functions in bilinear maps and prove their security in the random oracle model. Finally, we give the implementation of the proposed schemes and suggest methods to improve the performance of ciphertext comparisons.
AB - Order-revealing encryption is a useful cryptographic primitive that provides range queries on encrypted data since anyone can compare the order of plaintexts by running a public comparison algorithm. Most studies on order-revealing encryption focus only on comparing ciphertexts generated by a single client, and there is no study on comparing ciphertexts generated by multiple clients. In this paper, we propose the concept of multi-client order-revealing encryption that supports comparisons not only on ciphertexts generated by one client but also on ciphertexts generated by multiple clients. We also define a simulationbased security model for multi-client order-revealing encryption. The security model is defined with respect to the leakage function which quantifies how much information is leaked from the scheme. Next, we present two specific multi-client order-revealing encryption schemes with different leakage functions in bilinear maps and prove their security in the random oracle model. Finally, we give the implementation of the proposed schemes and suggest methods to improve the performance of ciphertext comparisons.
KW - Bilinear maps
KW - Encryption
KW - Medical services
KW - Multi-client order-revealing encryption
KW - Order-revealing encryption
KW - Ores
KW - Servers
KW - Symmetric-key encryption
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UR - http://www.scopus.com/inward/citedby.url?scp=85051675735&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2018.2864991
DO - 10.1109/ACCESS.2018.2864991
M3 - Article
AN - SCOPUS:85051675735
JO - IEEE Access
JF - IEEE Access
SN - 2169-3536
ER -