Files
SGU-CredentialProvider/scripts/New-SguAzureP2sCertificates.ps1

90 lines
3.4 KiB
PowerShell

#Requires -Version 5.1
[CmdletBinding(SupportsShouldProcess)]
param(
[Parameter(Mandatory)]
[ValidatePattern('^[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?$')]
[string]$ClientName,
[string]$OutputDirectory = (Join-Path $PSScriptRoot '..\artifacts\azure-p2s'),
[securestring]$ClientPfxPassword,
[string]$RootSubject = 'CN=SGU Azure P2S Root',
[ValidateRange(1, 10)]
[int]$ClientValidityYears = 2,
[switch]$Force
)
$ErrorActionPreference = 'Stop'
$resolvedOutputDirectory = [IO.Path]::GetFullPath($OutputDirectory)
New-Item -ItemType Directory -Path $resolvedOutputDirectory -Force | Out-Null
$rootCertificatePath = Join-Path $resolvedOutputDirectory 'sgu-azure-p2s-root.cer'
$clientCertificatePath = Join-Path $resolvedOutputDirectory "sgu-azure-p2s-$ClientName.pfx"
if ((Test-Path -LiteralPath $clientCertificatePath -PathType Leaf) -and -not $Force) {
throw "$clientCertificatePath already exists. Use -Force only when you intend to replace that exported client credential."
}
if (-not $ClientPfxPassword) {
$ClientPfxPassword = Read-Host 'Password that will protect the exported P2S client certificate' -AsSecureString
}
$rootCertificate = Get-ChildItem Cert:\CurrentUser\My |
Where-Object {
$_.Subject -eq $RootSubject -and
$_.HasPrivateKey -and
$_.NotAfter -gt (Get-Date).AddYears($ClientValidityYears)
} |
Sort-Object NotAfter -Descending |
Select-Object -First 1
if (-not $rootCertificate) {
if (-not $PSCmdlet.ShouldProcess($RootSubject, 'Create a non-exportable Azure P2S root certificate authority')) {
return
}
$rootCertificate = New-SelfSignedCertificate `
-Type Custom `
-Subject $RootSubject `
-CertStoreLocation Cert:\CurrentUser\My `
-KeyAlgorithm RSA `
-KeyLength 4096 `
-HashAlgorithm SHA256 `
-KeySpec Signature `
-KeyExportPolicy NonExportable `
-KeyUsage CertSign,CRLSign,DigitalSignature `
-NotAfter (Get-Date).AddYears(10) `
-TextExtension @('2.5.29.19={critical}{text}ca=1&pathlength=1')
}
if (-not $PSCmdlet.ShouldProcess($ClientName, 'Issue and export an Azure P2S machine certificate')) {
return
}
$clientSubject = "CN=SGU Azure P2S $ClientName"
$clientCertificate = New-SelfSignedCertificate `
-Type Custom `
-Subject $clientSubject `
-DnsName "sgu-p2s-$ClientName" `
-Signer $rootCertificate `
-CertStoreLocation Cert:\CurrentUser\My `
-KeyAlgorithm RSA `
-KeyLength 3072 `
-HashAlgorithm SHA256 `
-KeySpec Signature `
-KeyExportPolicy Exportable `
-KeyUsage DigitalSignature `
-NotAfter (Get-Date).AddYears($ClientValidityYears) `
-TextExtension @('2.5.29.37={text}1.3.6.1.5.5.7.3.2')
Export-Certificate -Cert $rootCertificate -FilePath $rootCertificatePath -Force | Out-Null
Export-PfxCertificate -Cert $clientCertificate -FilePath $clientCertificatePath `
-Password $ClientPfxPassword -ChainOption BuildChain -CryptoAlgorithmOption AES256_SHA256 `
-Force | Out-Null
[pscustomobject]@{
RootCertificatePath = $rootCertificatePath
RootCertificateThumbprint = $rootCertificate.Thumbprint
RootCertificateData = [Convert]::ToBase64String($rootCertificate.RawData)
ClientName = $ClientName
ClientCertificatePath = $clientCertificatePath
ClientCertificateThumbprint = $clientCertificate.Thumbprint
ClientCertificateExpires = $clientCertificate.NotAfter
RootPrivateKeyExportable = $false
}