![]() Openssl pkcs12 -in pfx-certificate.pfx -nodes -nocerts | openssl rsa -out private.key # Optional: you could also create the private key as PKCS1- old RSA format Openssl pkcs12 -in pfx-certificate.pfx -nocerts -nodes | sed -ne '/-BEGIN PRIVATE KEY-/,/-END PRIVATE KEY-/p' > private.pem # Create the private key (PKCS8, the openssl default), strip out the bag attributes Openssl pkcs12 -in pfx-certificate.pfx -nokeys -nodes | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > public.pem # Create a public key, strip out the bag attributes The private key is the password, in PEM format so that needs to be kept safe. The first step to getting your PFX file into the better PEM format is to convert it into two keys: a public and private key. NET Core 5.0: you can use the X509Certificate2 to load a single PEM file that’s been converted from a PFX file (which contains the public and private key in one single PEM file). This is why there is a lot of trial and error involved in getting it to work which this blog post should save you from having to do. Similarly, the RSA class you end up using to load the private key (or ECDSA class) hasn’t got the ability to parse the header and footer of a PEM file. So if you try to use the X509Certificate2 class to load the private key, you will get data errors. NET Core 3.0, the X509Certificate2 and X509Certificate classes can handle the public key side of things quite well, but don’t handle private key-format loading. NET Core, there’s still quite a lot of research involved in doing this, to avoid getting corrupted ANS data errors. NET core, you’d be mistaken for thinking this would be straight forward. PFX certificate (quite often found as certs in or around IIS), and then use it in. If you want to convert a horrible Windows-style. ![]() NET Core if you’re unsure about the various formats this post describes. Before reading this post, it’s worth reading the post I did on public private key glossary of terms and public private key by example in.
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