[openssl-users] openssl 1.1.1 opaque structures

[Viktor Dukhovni]

> On Nov 26, 2018, at 12:45 AM, priya p <priyahere223 at gmail.com> wrote:
> 
> I am trying to fix this part of code:
> 
>  int Func1 (var, bn) {
> *var = rc_vmalloc(bn->top * BN_BYTES); ------------------> Trying to fix this. Error it throws is " error: dereferencing pointer to incomplete type".
> 
>  (*var)->l = BN_bn2bin(bn, (unsigned char *)(*var)->v);
> .
> .
> }

Have you considered looking at the BN_bn2bin documentation?

   https://www.openssl.org/docs/man1.0.2/crypto/BN_bn2bin.html

   SYNOPSIS:
       int BN_bn2bin(const BIGNUM *a, unsigned char *to);

   DESCRIPTION:

       BN_bn2bin() converts the absolute value of a into big-endian form and
       stores it at to. to must point to BN_num_bytes(a) bytes of memory.

-- 
	Viktor.