TY - JOUR
T1 - Scalable group key management with partially trusted controllers
AU - Khurana, Himanshu
AU - Bonilla, Rafael
AU - Slagell, Adam
AU - Afandi, Raja
AU - Hahm, Hyung Seok
AU - Basney, Jim
PY - 2005
Y1 - 2005
N2 - Scalable group key management solutions are crucial for supporting Internet applications that are based on a group communication model. Many solutions have been proposed and of these the most efficient and scalable ones are based on logical key hierarchies (LKH) with symmetric keys organized in a tree. However, these solutions centralize trust in the group controller and make it an attractive attack target for access to communication keys for all groups supported by the controller. In this paper we propose a novel group key management approach, which uses a partially trusted controller that does not have access to communication keys and yet provides the same level of efficiency and scalability as LKH schemes. For this we develop a new public-key encryption scheme, which is based on El Gamal, and we show that the scheme is as secure as El Gamal.
AB - Scalable group key management solutions are crucial for supporting Internet applications that are based on a group communication model. Many solutions have been proposed and of these the most efficient and scalable ones are based on logical key hierarchies (LKH) with symmetric keys organized in a tree. However, these solutions centralize trust in the group controller and make it an attractive attack target for access to communication keys for all groups supported by the controller. In this paper we propose a novel group key management approach, which uses a partially trusted controller that does not have access to communication keys and yet provides the same level of efficiency and scalability as LKH schemes. For this we develop a new public-key encryption scheme, which is based on El Gamal, and we show that the scheme is as secure as El Gamal.
UR - http://www.scopus.com/inward/record.url?scp=26844522840&partnerID=8YFLogxK
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U2 - 10.1007/978-3-540-31957-3_75
DO - 10.1007/978-3-540-31957-3_75
M3 - Conference article
AN - SCOPUS:26844522840
VL - 3421
SP - 662
EP - 672
JO - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
JF - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SN - 0302-9743
IS - II
T2 - Networking - ICN 2005
Y2 - 17 April 2005 through 21 April 2005
ER -