Certificate pinning in Alamofire

Question

I am creating an iPad app that accesses HTTPS web services. I want to implement pinning, but am having issues.

This class creates the Alamofire Manager (mostly taken fro

Answer 1

So, the issue was that the certificate was saved in the wrong format.

ServerTrustPolicy.certificatesInBundle() finds all certificates in the bundle based on a list of extensions, then tries to load them using SecCertificateCreateWithData. Per its documentation, this function:

Returns NULL if the data passed in the data parameter is not a valid DER-encoded X.509 certificate

When you export a certificate in Firefox, you have a "format" pop-up at the bottom of the file browser. Select "X.509 Certificate (DER)", and you should get a certificate in the right format for this purpose.