Some time ago, I decided that having an easy-to-use PGP PowerShell module is a way to kill my boredom. Four months have passed, and I decided to share it with the world, as it may be helpful to some of you. Today I would like to introduce you to PSPGP – PowerShell module that provides PGP functionality in PowerShell.
PSPGP is a fairly small PowerShell module that has only four commands at the moment of writing. Those are:
While the module itself is tiny – that's what makes it very powerful and easy to use.
PGP works based on public and private keys. Those can be generated using the New-PGPKey command, as shown below
New-PGPKey -FilePathPublic $PSScriptRoot\Keys\PublicPGP.asc -FilePathPrivate $PSScriptRoot\Keys\PrivatePGP.asc -UserName 'przemyslaw.klys' -Password 'ZielonaMila9!'
Once you have private and public keys generated, you're ready to encrypt the folder using someone's public key and send it over.
Protect-PGP -FilePathPublic $PSScriptRoot\Keys\PublicPGP.asc -FolderPath $PSScriptRoot\Test -OutputFolderPath $PSScriptRoot\Encoded
Similarly, if someone sends you content encrypted with a public key, you can now decrypt it with your own private key and password.
Unprotect-PGP -FilePathPrivate $PSScriptRoot\Keys\PrivatePGP.asc -Password 'ZielonaMila9!' -FolderPath $PSScriptRoot\Encoded -OutputFolderPath $PSScriptRoot\Decoded
Of course, PGP also supports a way to encrypt/decrypt strings.
$ProtectedString = Protect-PGP -FilePathPublic $PSScriptRoot\Keys\PublicPGP.asc -String "This is string to encrypt" Unprotect-PGP -FilePathPrivate $PSScriptRoot\Keys\PrivatePGP.asc -Password 'ZielonaMila9!' -String $ProtectedString
Finally, one can always verify signature by using Test-PGP command
$ProtectedString = Protect-PGP -FilePathPublic $PSScriptRoot\Keys\PublicPGP.asc -String "This is string to encrypt" Test-PGP -FilePathPublic $PSScriptRoot\Keys\PublicPGP.asc -String $ProtectedString Test-PGP -FilePathPublic $PSScriptRoot\Keys\PublicPGP.asc -FolderPath $PSScriptRoot\Encoded
To run it, just install it from PowerShellGallery, and you're good. If you are not an administrator, you can use this module within the scope of the current user.
Install-Module PSPGP -Force -Scope CurrentUser
If, however, you would like to make sure the module is available machine-wide, you can do this without providing scope.
Install-Module PSPGP -Force
All source codes are available on GitHub. If you have an issue, feature request, problem, please use GitHub as a way to reach for support. As I have limited time, reaching out via email doesn't bring many results. As with many of my other PowerShell modules, it's always a work in progress, and not everything is 100% finished. Please keep in mind this module works cross-platform on Windows/Linux and macOS. For PowerShell 5.1, it requires .NET Framework 4.7.2 at a minimum to work.
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