A new message authentication code (MAC) algorithm is proposed, which improves the popular retail MAC based on the data encryption standard;it has the same complexity, but provides better resistance against key recover...
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A new message authentication code (MAC) algorithm is proposed, which improves the popular retail MAC based on the data encryption standard;it has the same complexity, but provides better resistance against key recovery attacks. Ln addition, a new key recovery attack on the retail MAC is presented, requiring a single known text-MAC pair and 2(56) online MAC verifications.
Previously, Desmedt and Seberry developed a practical proven secure authentication scheme with arbitration. Their scheme, however, only provides an environment for a single sender. Nevertheless, in real applications, ...
详细信息
Previously, Desmedt and Seberry developed a practical proven secure authentication scheme with arbitration. Their scheme, however, only provides an environment for a single sender. Nevertheless, in real applications, many senders may collaboratively send a message to the receiver and convince the receiver that the message is actually transmitted by them. In this paper, we present an efficient scheme which (a) is unconditionally secure against denial by the senders having sent a message and (b) reduces the size of evidence for the authentic message and the number of enciphering keys to be held by the senders in a multi-senders environment. (C) 1998 Published by Elsevier Science B.V.
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