gistfile1.txt

        let tag:NSData  = ("com.prototechnical.Crytter.keys.user" as NSString).dataUsingEncoding(NSUTF8StringEncoding)!
    
        let parameters: [String: AnyObject] = [
            kSecAttrKeyType: kSecAttrKeyTypeRSA,
            kSecAttrKeySizeInBits: 2048,
            kSecAttrIsPermanent: true,
            kSecAttrApplicationTag: tag
        ]

        println(parameters as NSDictionary)
        
        var publicKeyPtr, privateKeyPtr: Unmanaged<SecKey>?
        
        let result = SecKeyGeneratePair(parameters, &publicKeyPtr, &privateKeyPtr)