Re: Calling 'openssl' utility as a C function?

[Bernhard Froehlich]

Amir Yiron wrote:

Hello,





I can only use a C interface.


e.g. I want to generate the CA root certificate and key,
so instead of calling:



I want to do it in C code, probably by one of the following ways:





Note:

- I can't use Unix specific APIs like getenv();

I need my embedded application to be capable of creating a CA and creating SSL certificate. My operating system is eCos, which means I don't have shell or any scripts, and I can't run utilities (However, I have a file system!). I'm looking for a way to do what the 'openssl' utility does - just by calling OpenSSL library C functions. openssl req -x509 -newkey rsa -out cacert.pem -outform PEM -days 1825 1. call the main code of the openssl utility as a function, and prepare an appropriate arg/argc arguments vector, or 2. call directly the specific C function for the specific openssl subcommand ('req' in this case) with appropriate parameters. - command execution cannot be interactive (command arguments and configuration files have to supply all required parameters)

Have a look at the source code (apps/req.c) how it is done in the utility. This is C-code and compilable on Windows.

Hope it helps
Ted
;)

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