Hi,
I would like to use openssl library in my iOS application (Objective-C)
to generate certificate signing request.
If I wanted to use openssl application in linux I would write something
like that:
openssl req -new -newkey rsa:2048 -nodes -out common_name.csr -keyout
common_name.key -subj
"/C=pl/ST=state/L=city/O=organization/OU=department/CN=common_name"
However, I have to use openssl as a library. Can I ask for some hints on
how to do it or what documents should I read in the first place? Do I
have to separately create public/private keys and then use them to
create CSR?
I found out that there a few functions which are responsible for
creating CSR:
int PEM_write_bio_X509_REQ(BIO *bp, X509_REQ *x);
int PEM_write_X509_REQ(FILE *fp, X509_REQ *x);
int PEM_write_bio_X509_REQ_NEW(BIO *bp, X509_REQ *x);
int PEM_write_X509_REQ_NEW(FILE *fp, X509_REQ *x);
1. I assume that after calling PEM_write_X509_REQ_NEW(), file fp will
contain csr only, like this:
-----BEGIN CERTIFICATE REQUEST-----
...
-----END CERTIFICATE REQUEST-----
2. is there any info on how to initialize X509_REQ object?
It's a struct, that looks like this:
typdef struct X509_req_st {
X509_REQ_INFO* req_info;
X509_ALGOR* sig_alg;
ASN1_BIT_STRING* signature;
int references;
} X509_REQ;
As I look through the dependencies, there are a lot of different
classes. Do I have to initialize all of them manually or is there a
better way?
I would be very grateful for any help!
Greetings,
Kacper86
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