Name
Title | ||
|---|---|---|
Insecurity Of Cheng Et Al.'S Efficient Revocation In Ciphertext-Policy Attribute-Based Encryption Based Cryptographic Cloud Storage |
Abstract | ||
|---|---|---|
Ciphertext-policy attribute-based encryption (CP-ABE) is a promising solution to the problem of fine-grained access control over encrypted data in the cloud. Several CP-ABE based cryptographic cloud storage systems have been proposed in recent years. However, access policy revocation is expensive in these systems, because data owner has to retrieve, re-encrypt and re-upload the data when access policy updates. To optimize the access policy revocation procedure, Cheng et al. proposed a revocation scheme for CP-ABE based cryptographic cloud storage. In their scheme, the original data is first divided into a number of slices, and then uploaded to the cloud storage. When a revocation occurs, the data owner needs only to retrieve, re-encrypt and re-upload one slice instead of the entire data. They claimed that their scheme is efficient and computationally secure. In this paper, we first point out Cheng et al.'s scheme only preserves all-or-nothing property for one time, then we show that it is susceptible to a fatal attack from the malicious revoked data user who stores the symmetric key or generates extra valid slices. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1109/ISPA/IUCC.2017.00210 | 2017 15TH IEEE INTERNATIONAL SYMPOSIUM ON PARALLEL AND DISTRIBUTED PROCESSING WITH APPLICATIONS AND 2017 16TH IEEE INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING AND COMMUNICATIONS (ISPA/IUCC 2017) |
Keywords | Field | DocType |
cloud storage, ciphertext-policy attribute-based encryption, access policy revocation, information dispersal algorithm, all-or-nothing transform | Symmetric-key algorithm,Computer science,Computer security,Cryptography,Attribute-based encryption,Encryption,Revocation,Ciphertext,Multimedia,Cloud storage,Cloud computing | Conference |
ISSN | Citations | PageRank |
2158-9178 | 0 | 0.34 |
References | Authors | |
0 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Changji Wang | 1 | 95 | 15.55 |
| Jiayuan Wu | 2 | 0 | 1.01 |
| Yuan Yuan | 3 | 301 | 26.63 |
| Jing Liu | 4 | 135 | 45.52 |