(PowerShell) ABN AMRO OAuth2 Client Credentials Authentication

Demonstrates how to obtain an access token for an ABN AMRO online API using OAuth2 with the Client Credentials flow.

For more information, see https://developer.abnamro.com/api/payment-initiation-v1/payment-initiation-tutorial

Chilkat .NET Downloads Chilkat .NET Assemblies

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

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

# This example sends the following CURL request:

# 	curl -X POST -k https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2 \
# 	-v \
# 	--cert TPPCertificate.crt \
# 	--key TPPprivateKey.key \
# 	-H 'Cache-Control: no-cache' \
# 	-H 'Content-Type: application/x-www-form-urlencoded' \
# 	-d 'grant_type=client_credentials&client_id=TPP_test&scope=psd2:payment:sepa:write psd2:payment:sepa:read'

$cert = New-Object Chilkat.Cert
$success = $cert.LoadFromFile("qa_data/certs/TPPCertificate.cer")
if ($success -ne $true) {
    $($cert.LastErrorText)
    exit
}

$bdKey = New-Object Chilkat.BinData
$success = $bdKey.LoadFile("qa_data/certs/TPPprivateKey.key")

$privKey = New-Object Chilkat.PrivateKey
$success = $privKey.LoadAnyFormat($bdKey,"passwordIfNeeded")
if ($success -ne $true) {
    $($privKey.LastErrorText)
    exit
}

$success = $cert.SetPrivateKey($privKey)
if ($success -ne $true) {
    $($cert.LastErrorText)
    exit
}

$http = New-Object Chilkat.Http

$success = $http.SetSslClientCert($cert)
if ($success -ne $true) {
    $($http.LastErrorText)
    exit
}

$req = New-Object Chilkat.HttpRequest
$req.AddParam("grant_type","client_credentials")
$req.AddParam("client_id","TPP_test")
$req.AddParam("scope","psd2:payment:sepa:write psd2:payment:sepa:read")

$resp = $http.PostUrlEncoded("https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2",$req)
if ($http.LastMethodSuccess -eq $false) {
    $($http.LastErrorText)
    exit
}

if ($resp.StatusCode -ne 200) {
    $($resp.BodyStr)

    exit
}

# Get the JSON result:
# {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
$json = New-Object Chilkat.JsonObject
$json.Load($resp.BodyStr)
$("access_token: " + $json.StringOf("access_token"))
$("token_type: " + $json.StringOf("token_type"))
$("expires_in: " + $json.StringOf("expires_in"))