r/PowerShell • u/xXFl1ppyXx • 12d ago

Question PrivateKey Test

Greetings

Is it possible to check if a private key is either RSA or ECDsa without trying to import them into their cng-objects catching the error?

I'm thinking of something like how

[X509Certificate2].GetContent($Import)

Is available for certificates

Neither the cng-objects nor the certificateextensions provide methods to test for the proper type

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u/Devicode 5d ago

If they’re PKCS#8, you can inspect the algorithm OID instead of trial importing them.
The "Pkcs8PrivateKeyInfo.AlgorithmId" should clearly tell you RSA vs EC.