AUTHENTICATING MULTICAST INTERNET ELECTRONIC MAIL MESSAGES USING A BIDIRECTIONAL MAC IS INSECURE

被引:1
|
作者
MITCHELL, CJ
机构
[1] Computer Science Department, Royal Holloway and Bedford New College, University of London
关键词
AUTHENTICATION; CRYPTOGRAPHY; ELECTRONIC MAIL; HASHING FUNCTION; MAC;
D O I
10.1109/12.135563
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
The 1988 version of the message encryption and authentication procedures for Internet electronic mail makes use of a "Bidirectional MAC" or BMAC. When used for multicast electronic mail it is important that this BMAC acts as a one-way function. We show here that it is not a one-way function, which means that the BMAC technique should not be used for authenticating multicast messages.
引用
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页码:505 / 507
页数:3
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