> dh_struct = DH_new();
> dh_struct->p = BN_new();
> dh_struct->g = BN_new();
> dh_struct->priv_key = BN_new();
> dh_struct->pub_key = BN_new();
> num_byte = BN_dec2bn(dh_struct->p,str_p); // Here it seems that not
execute anything about
Something is very wrong in your code. BN_new returns a 'BIGNUM *', so
dh_struct->p contains a 'BIGNUM *'. But then you pass dh_struct->p as the
first parameter to BN_dec2bn, which takes a 'BIGNUM **'.
int BN_dec2bn(BIGNUM **a, const char *str);
BIGNUM *BN_new(void);
dh_struct->p can't be both a 'BIGNUM *' and a 'BIGNUM **'. In fact, it's a
'BIGNUM *'. So at a minimum, the BN_dec2bn call must be:
num_byte = BN_dec2bn(&dh_struct->p, str_p);
There could be other mistakes too. This was the most obvious.
DS
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