On Mon, Dec 9, 2013 at 10:34 PM, Niels Möller <[email protected]> wrote:

>> I think having a limitation that q_size < p_size/2 is pretty much
>> reasonable. The recommendations for DH parameters have q_size <<
>> p_size/2.
> Good to know. I was thinking that, e.g., p_size = q_size + 1 (and p = 2q
> + 1) was important. But maybe that's a special case, and the general
> case of q_size close to p_size is not very important?

Other implementations use it (or more precise they use safe primes
rather than set q explicitly). If that use-case is required, having a
different function to generate safe primes seems good enough.

regards,
Nikos
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