Password vs data entropy

[Ben Laurie]

Alex Pankratov wrote:
>> I want to make this distinction because I'd like to talk 
>> about secret keys, which have to be rather larger than 4 
>> kbits to have 4kbits of entropy for modular arithmetic stuff.
> 
> Are you referring to RSA-like secrets that involve prime
> numbers, which are therefore selected from a smaller subset
> of Z(n) ?

Yes.

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