Question

import std.stdio;
import deimos.openssl.bn;
import deimos.openssl.rsa;

const KEY_SIZE = 1024;

void main(string[] args) {
    if (args.length < 1) {
        writeln("too few arguments");
    }

    RSA* rsa = RSA_new();
    rsa = RSA_generate_key(KEY_SIZE, RSA_F4, null, null);
    if(rsa==null) {
        writeln("failure");
    }
    else {
        writeln("success");

        // error generated by the line below
        if(!BN_generate_prime(rsa.p, (KEY_SIZE/2), 1, null, null, null, null)) {
            writeln("prime_failure");
        }
        else {
            writeln("prime success");
        }

        RSA_free(rsa);
    }   
}

This leads to the following error:

rsa.d(21): Error: struct rsa_st is forward referenced

The error occurs anytime I try to access an element in the rsa struct. Any ideas?

Answer 1

I was able to get in contact with one of the people who frequently updates the OpenSSL Deimos on github and was able to get a response from him.

Basically the OpenSSL C API forward-declares structs in some places where the exact definitions are not required and these have stuck around in some of the D modules.

He requested a pull to the repository and the changes he made will fix your current problem. Here is the link:

Deimos: openssl update