Mastering Windows PowerShell Scripting - Third Edition

Formatting certificates

It is occasionally necessary to create certificates in very specific formats to appease other systems requiring such a certificate.

A certificate may be exported as a Base64 string as follows. The InsertLineBreaks option splits the string every 76 characters:

$certificate = Get-ChildItem Cert:\LocalMachine\Root | Select-Object -First 1[Convert]::ToBase64String(    $certificate.Export('Cert'),    [System.Base64FormattingOptions]::InsertLineBreaks)

If a different width is required, a regular expression may be used to tweak the format of the certificate—in this case, we split the lines every 64 characters:

$certificate = Get-ChildItem Cert:\LocalMachine\Root | Select-Object -First 1@(    '-----BEGIN CERTIFICATE-----' [Convert]::ToBase64String( ...