Sign a JWS with an HMAC Key from BinData

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetMacKeyBd, which sets the symmetric MAC key for a signature from the raw bytes in a BinData.

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

$success = $false

$jws = New-Object Chilkat.Jws

#  Protected header specifying HMAC-SHA256.
$header = New-Object Chilkat.JsonObject
$header.UpdateString("alg","HS256")
$success = $jws.SetProtectedHeader(0,$header)
if ($success -eq $false) {
    $($jws.LastErrorText)
    exit
}

$bIncludeBom = $false
$success = $jws.SetPayload("This is the content to sign.","utf-8",$bIncludeBom)
if ($success -eq $false) {
    $($jws.LastErrorText)
    exit
}

#  Set the symmetric MAC key for signature 0 from the raw bytes in a BinData.  In production, obtain
#  the key material from a secure source.
$bdKey = New-Object Chilkat.BinData
$bdKey.AppendEncoded("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU=","base64")
$success = $jws.SetMacKeyBd(0,$bdKey)
if ($success -eq $false) {
    $($jws.LastErrorText)
    exit
}

$jwsCompact = $jws.CreateJws()
if ($jws.LastMethodSuccess -eq $false) {
    $($jws.LastErrorText)
    exit
}

$($jwsCompact)