Checking a Public Key in canAuthenticateAgainstProtectionSpace

Question

I have been asked to check the public key against a known value in canAuthenticateAgainstProtectionSpace ( a delegate callback of NSURLConnection )

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Answer 1

Note that SecCertificateCopyData returns the certificate in it's "DER" form, Distinguished Encoding Rules. So you need to incorporate the certificate in your App in that form, and not as a pem or whatever format. To convert a certificate to DER with openssl use the command: openssl x509 -in server.crt -out server.der -outform DER