> Andrea e Luca Giacobazzi wrote:
>
> Hi,
> how can I convert a certificate from X509*xs structure format to DER
> format,
> and put it in a char * string in C, without using a temporary file ?
>
> Thanks everibody in advance.
>
You can use a memory BIO but the easiest way is to directly use the ASN1
functions.
Something like this will do it:
unsigned char *buf, *p;
int len;
len = i2d_X509(xs, NULL);
buf = Malloc(len);
p = buf;
i2d_X509(xs, &p);
... DER encoded cert in 'buf' ...
You need the temporary pointer 'p' because the ASN1 functions
automatically increment the passed pointer.
Steve.
--
Dr Stephen N. Henson. http://www.drh-consultancy.demon.co.uk/
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