PowerShell Requires Chilkat v11.0.0+

Load JWK into PublicKey Object

See more JSON Web Signatures (JWS) Examples

Demonstrates how to load a Java Web Key (JWK) into a Chilkat public key object. PowerShell

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

$success = $false

#  Imagine we have this JWK:

#  {
#  "kty":"RSA",
#  "kid":"bilbo.baggins@hobbiton.example",
#  "use":"sig",
#  "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
#  "e":"65537"
#  }
#  

$sbJwk = New-Object Chilkat.StringBuilder
$success = $sbJwk.LoadFile("qa_data/jwk/simple_jwk_rsa.json","utf-8")
if ($success -ne $true) {
    $("Failed to load simple JWK file.")
    exit
}

#  Loading it into a Chilkat public key object is easy:
$pubkey = New-Object Chilkat.PublicKey
$success = $pubkey.LoadFromString($sbJwk.GetAsString())
if ($success -eq $false) {
    $($pubkey.LastErrorText)
    exit
}

$("Simple JWK loaded into public key object.")

#  ----------------------------------------------------------------------------------------------------------
#  Demonstrate how to load a JWK that is contained within JSON into a public key object.

#  {
#    "alg":"RS256",
#    "jwk":  {
#            "kty":"RSA",
#            "kid":"bilbo.baggins@hobbiton.example",
#            "use":"sig",
#            "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
#            "e":"65537"
#            }
#  }

$sbJwk2 = New-Object Chilkat.StringBuilder
$success = $sbJwk2.LoadFile("qa_data/jwk/contained_jwk_rsa.json","utf-8")
if ($success -eq $false) {
    $($sbJwk2.LastErrorText)
    exit
}

#  Get the "jwk" part of the JSON..
$json = New-Object Chilkat.JsonObject
$json.Load($sbJwk2.GetAsString())

$jsonJwk = New-Object Chilkat.JsonObject
$success = $json.ObjectOf2("jwk",$jsonJwk)
if ($success -eq $false) {
    $($json.LastErrorText)
    exit
}

$pubkey2 = New-Object Chilkat.PublicKey
$success = $pubkey2.LoadFromString($jsonJwk.Emit())
if ($success -eq $false) {
    $($pubkey2.LastErrorText)
    exit
}

$("Contained JWK loaded into public key object.")