!!! Overview
[{$pagename}] is a [Cryptographic Collision] type of [attack] and a cousin to the [Birthday Attacks]

[{$pagename}] is done by the [Attacker] choosing 2%%sup 32%% different 64-[bit] [keys] at [random]. He then computes the [Message Authentication Code] on the ‘‘Are you ready to receive a transaction?’’ [message], and stores both the [MAC] result and the [key] in a table.

The [Attacker] then [eavesdrops|Eavesdropper] on each transaction and checks if the [MAC] of the first message appears in his table. If the [MAC] does appear in the table, then there is a very good chance that the [authentication] [key] for that transaction is the same key as the attacker used to compute that table entry, and that [key] value is stored right alongside the [MAC] value in the table. Now that the [attacker] knows the [authentication] [key], he can insert arbitrary [messages] of his choosing into the transaction. (The [Birthday Attack] only allowed him to insert [messages] from an old transaction.) 


!! More Information
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