A Revocation Scheme with Minimal Storage at Receivers
A Revocation Scheme with Minimal Storage at Receivers
复制标题
接收端最小存储的撤销方案
DOI:
10.1007/3-540-36178-2_27
复制
发表时间:
2002
期刊:
影响因子:
--
通讯作者:
T. Asano
中科院分区:
文献类型:
--
作者:
T. Asano
A revocation or a broadcast encryption technology allows a sender to transmit information securely over a broadcast channel to a select group of receivers excluding some revoked receivers. In this paper we propose two efficient revocation methods which are suitable for stateless receivers. The proposed methods use ana-ary key tree structure and require at mostr(log(N/r)/loga+ 1 ) ciphertexts broadcast. Our Method 1 requires only one key to be stored andO(2alog5N/loga) computational overhead at a receiver, whereas Method 2 requires logN/logakeys andO(2a) computational overhead, whereNandrrespectively denote the total number of receivers and the number of revoked receivers. Our methods are very efficient with respect to the number of keys each receiver stores, especially Method 1 minimizes it.
影响因子:
22.7
作者:
SHAMIR, A
通讯作者:
SHAMIR, A