ARM chip caveat

[Keith Lockstone G-Net 701 7710]

Electronics Weekly (UK), April 15, 1998, page 2, reports:
    '100Mips Amulet3 ready by year end'
Amulet3 is the asynchronous version of the ARM7 Thumb core being 
developed at Manchester University.

The crypto interest lies in its asynchronous design.  The time 
taken by each instruction is variable and is data dependent.  The 
up side is that EMI is much reduced due to lack of clocks.

Designers who want to use this chip for crypto algorithms should 
consider the possible effective reduction of keyspace that their 
code produces.

Keith Lockstone.