Using Powershell to Convert PFX to PEM


I'm looking for a code snippet to do the following, I've created a bit of the code:

1. Read a list certificates - $certs gci c:\certs -include *.pfx -name
2. For each certificate name run the following command against it
     openssl pkcs12 -in <certificate name.pfx> -out <certificate name.pem> -nodes -password pass:<Password>
3. The password has to be extracted from an excel spreadsheet with two columns, certificate name and password.

I essentially want to be able to convert a load of pfx certs to pem certs and retrieve the associated passwords from a spreadsheet, the certificate name in the spreadsheet will be identical to the one in step 1

Any help appreciated.
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Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Does it really need to be an Excel file? A CSV is much easier to handle.
ndr-itsolutionsAuthor Commented:
CSV is fine.
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
I'll reverse the logic slightly, using the CSV to locate files instead of going the other way round.
The CSV has columns certname (without file extension) and password.
push-location c:\certs
import-csv certs.csv | % { openssl pkcs12 -in "$($_.certname).pfx" -out "$($_.certname).pem" -nodes -password pass:$($_.password) }

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This does not work well if you have a big list of certs, but only want to apply the script to a few you put the files in the folder.

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