![]() ![]() Therefore, to use this flag with our above example, you would need to recreate your own self-signed certs. While we provide the self-signed certificates to use in the examples, we don’t provide the corresponding Certificate Authority certificate used to generate them. ![]() If you wanted to do this, you would add the certificate authority file with the -CAfile flag. The verify error listed here is because we’re using a self-signed certificate and didn’t provide the certificate authority’s certificate needed to validate the server’s certificate (a critical step in any production environment). Verify error:num=21:unable to verify the first certificate Verify error:num=20:unable to get local issuer certificateĭepth=0 C = US, ST = CA, L = San Diego, O = "NetBurner, Server", CN = 10.1.1.128 The first section shows a little bit of information about the server certificate that was sent: depth=0 C = US, ST = CA, L = San Diego, O = "NetBurner, Server", CN = 10.1.1.128 In fact, let’s take a minute to review what we’re actually seeing here. The information above that, however, is pretty interesting and gives some specific information about the connection itself. The list of numbers is just test data that the module sends to verify the connection’s functionality. If your device is connected to your local network and you have internet access, this is as easy as opening your browser and going to .įrom your command line window, you’ll see a bunch of text scroll by, as shown in the image below, followed by a fairly long list of numbers. ![]() To load these applications on your device, you’ll first need to know its IP address. Like most of our examples, we have tried to make both of these a great launching point for more complex and complete applications. ![]() The server is in the folder sslserver, while the client is in the folder sslclient. You can find the example code for both of these in /examples/ssl/. In this article, we’re going to use two examples to help demonstrate testing with OpenSSL. The resulting output should look something like the following image. This command will display a very condensed list of what ciphers are currently available. If you want to see your current list of available ciphers, you can use the command, openssl ciphers. To determine what version of OpenSSL you currently have installed on your computer, open a command prompt and type the command, openssl version. ![]()
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