2016-12-14 11:17 GMT-03:00 Thomas J. Hruska <shinelight@xxxxxxxxxxxxxxxxxxx>:
On 12/14/2016 3:28 AM, Dr. Stephen Henson wrote:
On Wed, Dec 14, 2016, Salz, Rich wrote:
Is there some equivalent to PHP's openssl_sign_pkcs7 function for C/C++ users?
Look at the apps/pkcs7.c file as a starting point. Get the command line doing what you want, and then work through the code to pull out only the bits you need.
Actually smime.c is the utility you want for PKCS#7. Alternatively cms.c if
you want CMS (the successor to PKCS#7).
Those though are general purpose utilities which do all sorts of things which
most appications don't care about. There are some demos in demos/smime and
demos/cms which are much simpler.
PHP is open source software written in C.
A quick lookup in PHP's git repository (it's source code) turns up:
http://git.php.net/?p=php-src.git;a=blob;f=ext/openssl/opens sl.c;h=a4b302bd303579d8f3eb62a bdd9f312d3fba264d;hb=HEAD# l5148
Now the OP has a model to follow for writing a similar wrapper function for their project.
I've found that when people mention a specific language (in this case, PHP), they are infatuated with the language but have never bothered to crack open that language's source code to dig into how the language actually works. To some extent, they view the language as magical. And to some other extent, they irrationally fear looking at the source code of the language. Now is the perfect opportunity for the OP to start learning how one of their favorite languages operates behind the scenes with the goal of porting a single function that they are interested in. This approach solves multiple core developer problems at the same time.
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Thomas Hruska
Shining Light Productions
Home of BMP2AVI and Win32 OpenSSL.
http://www.slproweb.com/
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As a matter of facts, you're indeed right. I was daunted by the idea of going through PHP's source myself..
Thanks for the pointers, guys.
I'll report back as soon as I get some progress.
Kind regards,
Anibal.-
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