| Item type |
SIG Technical Reports(1) |
| 公開日 |
2023-07-17 |
| タイトル |
|
|
タイトル |
Member Removal Mechanism for TreeKEM to Deal with Offline Members |
| タイトル |
|
|
言語 |
en |
|
タイトル |
Member Removal Mechanism for TreeKEM to Deal with Offline Members |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
CSEC |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_18gh |
|
資源タイプ |
technical report |
| 著者所属 |
|
|
|
Waseda University |
| 著者所属 |
|
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|
Waseda University |
| 著者所属(英) |
|
|
|
en |
|
|
Waseda University |
| 著者所属(英) |
|
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|
en |
|
|
Waseda University |
| 著者名 |
Zihao, Zheng
Kazue, Sako
|
| 著者名(英) |
Zihao, Zheng
Kazue, Sako
|
| 論文抄録 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Messaging Layer Security (MLS), developed by IETF-MLS working group, aims to provide end-to-end asynchronous communication for large groups and is recently approved as a new standard. Its core protocol, TreeKEM, is a continuous group key agreement (CGKA) protocol that allows a group of users to build up and update a shared secret, which is used by its upper-protocol (MLS) to provide secure communication. Although TreeKEM has many desirable security features, its security guarantee largely diminishes when a group member is offline, a situation that most security analyses don't consider. This paper evaluates the security issue brought by offline members, defines a corresponding new security goal, and illustrates how TreeKEM can deal with the offline members with a member removal mechanism. |
| 論文抄録(英) |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Messaging Layer Security (MLS), developed by IETF-MLS working group, aims to provide end-to-end asynchronous communication for large groups and is recently approved as a new standard. Its core protocol, TreeKEM, is a continuous group key agreement (CGKA) protocol that allows a group of users to build up and update a shared secret, which is used by its upper-protocol (MLS) to provide secure communication. Although TreeKEM has many desirable security features, its security guarantee largely diminishes when a group member is offline, a situation that most security analyses don't consider. This paper evaluates the security issue brought by offline members, defines a corresponding new security goal, and illustrates how TreeKEM can deal with the offline members with a member removal mechanism. |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11235941 |
| 書誌情報 |
研究報告コンピュータセキュリティ（CSEC）
巻 2023-CSEC-102,
号 46,
p. 1-7,
発行日 2023-07-17
|
| ISSN |
|
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2188-8655 |
| Notice |
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|
|
SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc. |
| 出版者 |
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言語 |
ja |
|
出版者 |
情報処理学会 |
IPSJ-CSEC23102046.pdf (1.8 MB)
