(PowerShell) Azure Key Vault Get the Latest Version of a Certificate

See more Azure Key Vault Examples

Demonstrates how to get the latest version of a certificate in Azure Key Vault.

Note: This example requires Chilkat v9.5.0.96 or later.

For more information, see https://learn.microsoft.com/en-us/rest/api/keyvault/certificates/get-certificate/get-certificate?tabs=HTTP

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# See Azure Key Vault Get Certificates for a more detailed explanation
# for how Chilkat is automatically getting the OAuth2 access token for your application.

# Provide information needed for Chilkat to automatically get an OAuth2 access token as needed.
$json = New-Object Chilkat.JsonObject
$json.UpdateString("client_id","APP_ID")
$json.UpdateString("client_secret","APP_PASSWORD")
$json.UpdateString("resource","https://vault.azure.net")
$json.UpdateString("token_endpoint","https://login.microsoftonline.com/TENANT_ID/oauth2/token")

$http = New-Object Chilkat.Http

# Instead of providing an actual access token, we give Chilkat the information that allows it to 
# automatically fetch the access token using the OAuth2 client credentials flow.
$http.AuthToken = $json.Emit()

# Replace VAULT_NAME with the name of your Azure Key Vault.
$http.SetUrlVar("certName","importCert01")

$sbResponse = New-Object Chilkat.StringBuilder
$success = $http.QuickGetSb("https://VAULT_NAME.vault.azure.net/certificates/{$certName}?api-version=7.4",$sbResponse)
if ($success -eq $false) {

    $statusCode = $http.LastStatus
    if ($statusCode -eq 0) {
        # We did not get a response from the server..
        $($http.LastErrorText)
    }
    else {
        # We received a response, but it was an error.
        $("Error response status code: " + $statusCode)
        $("Error response:")
        $($sbResponse.GetAsString())
    }

    exit
}

$jsonResp = New-Object Chilkat.JsonObject
$jsonResp.LoadSb($sbResponse)
$jsonResp.EmitCompact = $false

$($jsonResp.Emit())

# A sample JSON response is show at the bottom.

# Let's do two things with the result.
# 1) Load the DER of the cert into a Chilkat Cert object.
# 2) Get the Key Vault version id of the certificate.

$cert = New-Object Chilkat.Cert
$success = $cert.LoadFromBase64($jsonResp.StringOf("cer"))
if ($success -eq $false) {
    $($cert.LastErrorText)
    $("Failed to load certificate from Base64 DER.")
    exit
}

# The Azure Key Vault's "version" of the certificate is the hex string at the end of the "id", "kid", and "sid" JSON members.
# For example:  "7140c8755ed14839b5d86a9f7e7f0497"
$sbId = New-Object Chilkat.StringBuilder
$sbId.Append($jsonResp.StringOf("id"))
$certVersion = $sbId.GetAfterFinal("/",$false)
$("The key vault cert version is " + $certVersion)

# {
#   "id": "https://kvchilkat.vault.azure.net/certificates/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
#   "kid": "https://kvchilkat.vault.azure.net/keys/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
#   "sid": "https://kvchilkat.vault.azure.net/secrets/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
#   "x5t": "I_e3776K5Q_6PN1HHvJoI2ZGQRQ",
#   "cer": "MIIGXjCCB .... cjTsi7yIY=",
#   "attributes": {
#     "enabled": true,
#     "nbf": 1633996800,
#     "exp": 1728691199,
#     "created": 1697411128,
#     "updated": 1697411128,
#     "recoveryLevel": "CustomizedRecoverable+Purgeable",
#     "recoverableDays": 7
#   },
#   "policy": {
#     "id": "https://kvchilkat.vault.azure.net/certificates/importCert01/policy",
#     "key_props": {
#       "exportable": true,
#       "kty": "RSA",
#       "key_size": 4096,
#       "reuse_key": false
#     },
#     "secret_props": {
#       "contentType": "application/x-pkcs12"
#     },
#     "x509_props": {
#       "subject": "CN=\"Chilkat Software, Inc.\", O=\"Chilkat Software, Inc.\", S=Illinois, C=US",
#       "ekus": [
#         "1.3.6.1.5.5.7.3.3"
#       ],
#       "key_usage": [
#         "digitalSignature"
#       ],
#       "validity_months": 37,
#       "basic_constraints": {
#         "ca": false
#       }
#     },
#     "lifetime_actions": [
#       {
#         "trigger": {
#           "lifetime_percentage": 80
#         },
#         "action": {
#           "action_type": "EmailContacts"
#         }
#       }
#     ],
#     "issuer": {
#       "name": "Unknown"
#     },
#     "attributes": {
#       "enabled": true,
#       "created": 1697411128,
#       "updated": 1697411128
#     }
#   }
# }