> From: owner-openssl-us...@openssl.org On Behalf Of Dirk Menstermann
> Sent: Wednesday, 10 March, 2010 10:57

> when I generate DH parameters with:
> 
> int bits = 1024;
> DH *params = DH_generate_parameters (bits, DH_GENERATOR_5, 
> NULL, NULL);
> 
> Can I then later read the value of the bits parameter from 
> the DH struct?
> 
DH_size() gives you the number of BYTES for the modulus 
(and thus group elements like priv&pubkey values).
If it was a multiple of 8 to start with, as it was 
in this example and usually is, bytes*8 = bits.

If (possibly) not, BH_num_bits(dh->p) gives the exact bits.



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