[openssl-users] i2d_X509_SIG() in FIPS mode

[Gayathri Manoj]

Hi Steve, Viktor,

I have tried with len also, But this also causing seg fault.
my requiremnt is to store  max  2048 bit keys. Hence I  used  length as 512
+1.
currently i ma getting len value = 28514.

X509_SIG sig;
X509_ALGOR algor;
ASN1_OCTET_STRING digest;
ASN1_TYPE parameter;
   ASN1_item_digest() // to get digest details
   sig.algor = &algor;
    sig.algor->algorithm=OBJ_nid2obj(NID_md5);
    parameter.type=V_ASN1_NULL;
    parameter.value.ptr=NULL;
    sig.algor->parameter = ¶meter;
    sig.digest = &digest;
    sig.digest->data=(unsigned char*)msg;
    sig.digest->length=datalen;
    len = i2d_X509_SIG(&sig,NULL);


Thanks,
Gayathri

On Mon, Feb 2, 2015 at 9:31 PM, Viktor Dukhovni <openssl-users at dukhovni.org>
wrote:

> 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.
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