Title :
Security of Bertino-Shang-Wagstaff Time-Bound Hierarchical Key Management Scheme for Secure Broadcasting
Author_Institution :
Sch. of Eng. & Sci., Victoria Univ., Melbourne, VIC, Australia
Abstract :
Recently, Bertino, Shang and Wagstaff proposed a time-bound hierarchical key management scheme for secure broadcasting. Their scheme is built on elliptic curve cryptography and implemented with tamper-resistant devices. In this paper, we present two collusion attacks on Bertino-Shang-Wagstaff scheme. The first attack does not need to compromise any decryption device, while the second attack requires to compromise single decryption device only. Both attacks are feasible and effective.
Keywords :
broadcasting; public key cryptography; telecommunication security; Bertino-Shang-Wagstaff key management scheme; collusion attack; decryption device; elliptic curve cryptography; secure broadcasting; time-bound hierarchical key management scheme; Access control; Broadcasting; Cryptography; Elliptic curve cryptography; Elliptic curves; Secure broadcasting; elliptic curve cryptography.; time-bound hierarchical key management;
Journal_Title :
Dependable and Secure Computing, IEEE Transactions on
DOI :
10.1109/TDSC.2010.42
