Name
Abstract | ||
|---|---|---|
Parallel key-insulated encryption (PKIE) usually allows two independent helper keys to be alternately used in temporary secret key update operations. At least half of temporary secret keys would be exposed and at least half of ciphertexts could be decrypted if one of the helper keys is exposed. In this paper, we propose a new PKIE scheme with m helper keys, where m∈Z,m>2. If one of the helper keys is exposed, only 1/m temporary secret keys would be exposed and 1/m ciphertexts could be decrypted, so the new PKIE scheme can greatly decrease loss due to key-exposure. The scheme is provably secure without random oracles based on a bilinear group of composite order. Most important, the scheme is practical and much more efficient than the extended ones from the previous PKIE schemes. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1016/j.camwa.2012.01.032 | Computers & Mathematics with Applications |
Keywords | Field | DocType |
Key-insulated encryption,Helper key,Composite order,Without random oracles | Symmetric-key algorithm,Mathematical optimization,Composite order,Algorithm,Arithmetic,Encryption,Mathematics,Bilinear interpolation | Journal |
Volume | Issue | ISSN |
65 | 9 | 0898-1221 |
Citations | PageRank | References |
1 | 0.35 | 16 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yanli Ren | 1 | 247 | 24.83 |
| Shuozhong Wang | 2 | 1172 | 63.51 |
| Xinpeng Zhang | 3 | 2541 | 174.68 |