Abstract
Designing secure revocable storage systems for a large number of users in a cloud-based environment is important. Cloud storage systems should allow its users to dynamically join and leave the storage service. Further, the rights of the users to access the data should be changed accordingly. Recently, Liang et al. proposed a cloud-based revocable identity-based proxy re-encryption (CR-IB-PRE) scheme that supports user revocation and delegation of decryption rights. Moreover, to reduce the size of the key update token, they employed a public key broadcast encryption system as a building block. In this paper, we show that the CR-IB-PRE scheme with the reduced key update token size is not secure against collusion attacks.
| Original language | English |
|---|---|
| Pages (from-to) | 1933-1936 |
| Number of pages | 4 |
| Journal | IEICE Transactions on Information and Systems |
| Volume | E99D |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2016 Jul 1 |
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Keywords
- Ciphertext update
- Cloudbased identity-based proxy re-encryption
- Key revocation
- Revocable identity-based encryption
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Software
- Artificial Intelligence
- Hardware and Architecture
- Computer Vision and Pattern Recognition
Cite this
Security of cloud-based revocable identity-based proxy re-encryption scheme. / Park, Seunghwan; Lee, Dong Hoon.
In: IEICE Transactions on Information and Systems, Vol. E99D, No. 7, 01.07.2016, p. 1933-1936.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Security of cloud-based revocable identity-based proxy re-encryption scheme
AU - Park, Seunghwan
AU - Lee, Dong Hoon
PY - 2016/7/1
Y1 - 2016/7/1
N2 - Designing secure revocable storage systems for a large number of users in a cloud-based environment is important. Cloud storage systems should allow its users to dynamically join and leave the storage service. Further, the rights of the users to access the data should be changed accordingly. Recently, Liang et al. proposed a cloud-based revocable identity-based proxy re-encryption (CR-IB-PRE) scheme that supports user revocation and delegation of decryption rights. Moreover, to reduce the size of the key update token, they employed a public key broadcast encryption system as a building block. In this paper, we show that the CR-IB-PRE scheme with the reduced key update token size is not secure against collusion attacks.
AB - Designing secure revocable storage systems for a large number of users in a cloud-based environment is important. Cloud storage systems should allow its users to dynamically join and leave the storage service. Further, the rights of the users to access the data should be changed accordingly. Recently, Liang et al. proposed a cloud-based revocable identity-based proxy re-encryption (CR-IB-PRE) scheme that supports user revocation and delegation of decryption rights. Moreover, to reduce the size of the key update token, they employed a public key broadcast encryption system as a building block. In this paper, we show that the CR-IB-PRE scheme with the reduced key update token size is not secure against collusion attacks.
KW - Ciphertext update
KW - Cloudbased identity-based proxy re-encryption
KW - Key revocation
KW - Revocable identity-based encryption
UR - http://www.scopus.com/inward/record.url?scp=84976892804&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84976892804&partnerID=8YFLogxK
U2 - 10.1587/transinf.2016EDL8042
DO - 10.1587/transinf.2016EDL8042
M3 - Article
AN - SCOPUS:84976892804
VL - E99D
SP - 1933
EP - 1936
JO - IEICE Transactions on Information and Systems
JF - IEICE Transactions on Information and Systems
SN - 0916-8532
IS - 7
ER -