12/31/2023 0 Comments Openssl x509![]() ![]() If everything worked as expected you should have the following artifacts on your local machine: pfx as file extension for pkcs12 archives. The third line combines your certificate and your private key to a pkcs12 archive file. Just remember that this information will be visible to anyone having access to your generated certificate. Since you generate a self-signed certificate for testing purpose only it does not matter what information you enter. This is your certificate.ĭuring the process, you will be asked a few information that will be put into your certificate. The private key generated by the first line acts as the input and the certificate which results from this process will be written to the public.cer file. The second line creates a new x509 certificate using the sha1 hashing algorithm which will remain valid for 1000 days. Depending on your scenario you might be required to change this setting to 1024bit if you need a 1024bit key. 2048bit is required if you want to use IdentityServer. The first line generates a new RSA 2048bit private key. Openssl pkcs12 -export -in public.cer -inkey private.key -out cert_key.p12 Openssl req -new -x509 -nodes -sha1 -days 1000 -key private.key > public.cer Use the following lines to create your self-signed certificate:.Otherwise, you need to change your directory (cd) to C:\OpenSSL-Win64\bin. If you configured your openSSL directory in your system path, that’s fine.Make sure to run your console as an administrator in order to be able to create any certificates.The program we need to create a self-signed certificate using openSSL is called openssl.exe and is located in C:\OpenSSL-Win64\bin. If you want to be able to run openSSL commands in your console from within every directory, you will need to add the path to the openSSL directory to your system path. Add openSSL to the path variable (optional) If you don’t change the installation path it will install to C:\OpenSSL-Win64. After downloading you need to install it on your local machine. Everything mentioned in this post was tested with exactly this version of openSSL, although I am pretty sure that you could use any other openSSL installation. If you want to generate a self-signed certificate on a Windows Server machine, there is a much simpler and much more convenient way described by Filip Ekberg to get the same result as described in this post. After browsing a few hours and setting up my IdentityServer in a way that finally worked, I will tell you all the details about how to generate a working certificate. I was struggling to create any certificates that work with IdentityServer. If you want to create a self-signed certificate using openSSL on your local machine which is running any Windows desktop version, continue reading.
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