Why is RMAC resistant to birthday attacks?
David Wagner
daw at mozart.cs.berkeley.edu
Wed Oct 23 20:24:46 EDT 2002
Ed Gerck wrote:
>(A required property of MACs is providing a uniform distribution of values for a
>change in any of the input bits, which makes the above sequence extremely
>improbable)
Not so. This is not a required property for a MAC.
(Not all MACs must be PRFs.)
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