At 10:46 PM 06/03/1999 , Vadim Fedukovich wrote:
>>
>> Hello;
>>
>> I'm attempting to convert a buffer containing a sequence of
>> DER-encoded objects into a set of X509 objects.
>>
>> The documentation for d2i_TYPE:
>>
>> TYPE *d2i_TYPE(a, pp, length)
>> TYPE **a;
>> unsigned char **pp;
>> long length;
>>
>> says that "*pp will be updated to point to *pp + length, so that d2i can be
>
>"length" here is not parameter value but the size of object just decoded
Ah, OK ... this was my misunderstanding.
So I can compare the before and after values of *pp to determine the length
of the decoded DER object.
>There's lots of user's (well, developer's) habits, shortcuts..etc
>based on this concept already so it's unlikey to get changed easily.
>What for do you need length of der-decoded objects?
After verifying an X509 cert chain, I want to write the DER-encoded
objects to separate disk files, using calls to the usual C RTL fwrite()
function which requires the length. Is there a more straightforward way
of doing this with OpenSSL?
Thanks for your help, I appreciate it.
- Dave
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