i2d_X509_SIG() in FIPS mode

[openssl-users@xxxxxxxxxxxx (Viktor Dukhovni)]

On Mon, Feb 02, 2015 at 07:15:12PM +0530, Gayathri Manoj wrote:

> unsigned char *ptr, *tmp=NULL;
> X509_SIG sig;
> ....

How is "sig" initialized?

> len=i2d_X509_SIG(sig,NULL);
> tmp = (unsigned char*) malloc(513);

Why 513 and not len?  What is the value of len?

> ptr=tmp;
> i2d_X509_SIG(&sig, &ptr);  // here causing problem.

-- 
	Viktor.