NSC | Generate Signature for Token-Based Authentication

Token Based Authentication is widely used in NetSuite Integrations such as RESTlets, SOAP Web Services, and SuiteAnalytics Connect. As part of the TBA Authorization Flow, the Timestamp, Signature, and Nonce must be supplied to generate the signature.

The sample code below must be ran using PowerShell:

$nonce=''
$set="anyrandomcharactercombinationhere123".ToCharArray()
for($x=0;$x-lt20;$x++){
 $nonce+=$set|Get-Random
}
$account='xxxxxxx'#NetSuite Account ID

#Consumer Key and Secret from the Integration Record, Token and Token Secret from the User’s Access Tokens
$consumer_Key='xxxxx'
$consumer_secret='xxxxx'
$token='xxxxxxx'
$token_secret='xxxxxxx'

$timestamp=[int][double]::Parse((Get-Date(get-date).touniversaltime()-UFormat%s))
$timestamp=[string]$timestamp

$msg=$account+'&'+$consumer_Key+'&'+$token+'&'+$nonce+'&'+$timestamp
$secret=$consumer_secret+'&'+$token_secret

$hmacsha=New-ObjectSystem.Security.Cryptography.HMACSHA256
$hmacsha.key=[Text.Encoding]::ASCII.GetBytes($secret)
$signature=$hmacsha.ComputeHash([Text.Encoding]::ASCII.GetBytes($msg))
$signature=[Convert]::ToBase64String($signature)

echo$timestamp
echo$signature
echo$nonce