How to load PEM certificate in powershell 5?

Question

I already have pemfile with private key inside. I try to do smth like this how to get private key from PEM file? but I have stuck when create certificate object from file

in short:

$SourceCertificateFile= gc "E:\PSW\test.pem"
$EncCert=[Convert]::FromBase64String( ($SourceCertificate)[1..($SourceCertificate.Count -2 )] -as [string] )

New-Object   System.Security.Cryptography.X509Certificates.X509Certificate( @(, $EncCert)) #doesn`t work -Exception calling ".ctor" with "1" argument(s): object not found

New-Object System.Security.Cryptography.X509Certificates.X509Certificate2 ($EncCert) #Cannot find an overload for "X509Certificate2" and the argument count: "1104"

[System.Security.Cryptography.X509Certificates.X509Certificate2]::new($SourceCertificateFile) #doesn`t work -Exception calling ".ctor" with "1" argument(s): object not found

$x=[System.Security.Cryptography.X509Certificates.X509Certificate2]::New()
$x.Import($EncCert) #Exception calling "Import" with "1" argument(s): object not found

I see that exist X509Certificate2Collection.ImportFromPemFile method, but I don't understand how to properly initialize constructor

Thanks for any suggestions

pem files generated on linux host as

openssl genrsa -out private.pem 2048

PEM File (fresh generated):

your file is not a certificate, it is PKCS#1 RSA key. There is no certificate in file. — Crypt32, Jul 13 '21 at 14:46
@Crypt32, RSA.ImportFromPem method is not available (why?) $rsa= [System.Security.Cryptography.RSA]::Create() $rsa.ImportFromPem($pem) get error "The method call failed because [System.Security.Cryptography.RSACryptoServiceProvider] does not have a method named "ImportFromPem". — Oleg, Jul 14 '21 at 09:41
This method is available in .NET 5.0, thus PowerShell Core with .NET 5 is required. PowerShell 5 does not support .NET 5.0. — Crypt32, Jul 14 '21 at 09:44

score -1 · Answer 1 · answered Jul 14 '21 at 00:47

-1

Your file is an RSA private key, not a certificate.

You'd load something like that with something like

using (RSA rsa = RSA.Create())
{
    rsa.ImportFromPem(File.ReadAllText("private.pem"));
    // use the key here.
}

answered Jul 14 '21 at 00:47

bartonjs

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Doesn't work in powershell 5 as mentioned in the question. – Dobob Feb 26 '22 at 01:28

How to load PEM certificate in powershell 5?

1 Answers1