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Home Q & A Board Science-Related Homework Help Mathematics
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Anonymous peoplemover
wrote...
A year ago
Briefly explain why a multiplicative cipher system that uses modulo 29 would be better to use than a system that uses modulo 30?
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Anonymous
wrote...
#1
A year ago
Does this help?
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Anonymous Author
wrote...
#2
A year ago
I think I already figured it out, so mod 29 is better because there are more keys than mod 30?
mod 29 = 28 coprimes (16 inverses) vs. mod 30 = 8 coprimes (4 inverses). So the inverses are the keys yes?
Anonymous
wrote...
#3
A year ago
Yes, and yes.

The number of keys are less for when we have modulo 30.
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