Can I use the same preparams to generate multiple keys?

[majecty]

I want to generate multiple keys in the same group. Regenerating pre-parameters every time requires too much time.

Is it safe to reuse the pre-parameters?

[yycen]

Do you mean child key derivation that keygen once and can later derive child keys? This feature in not in master branch now, you can chek this for usage.

[yycen]

Yes, for N, h1, h2, you can use for another keygen, for the same set of parties.

[majecty]

@yycen Sorry for rate response. Thanks for your answer! It really helps me.