(Xojo Plugin) Load JWK into PublicKey Object

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

Note: This example requires Chilkat v9.5.0.66 or greater.

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//  Imagine we have this JWK:

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

Dim sbJwk As New Chilkat.StringBuilder
Dim success As Boolean
success = sbJwk.LoadFile("qa_data/jwk/simple_jwk_rsa.json","utf-8")
If (success <> True) Then
    System.DebugLog("Failed to load simple JWK file.")
    Return
End If

//  Loading it into a Chilkat public key object is easy:
Dim pubkey As New Chilkat.PublicKey
success = pubkey.LoadFromString(sbJwk.GetAsString())
If (success <> True) Then
    System.DebugLog(pubkey.LastErrorText)
    Return
End If

System.DebugLog("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"
//            }
//  }

Dim sbJwk2 As New Chilkat.StringBuilder
success = sbJwk2.LoadFile("qa_data/jwk/contained_jwk_rsa.json","utf-8")
If (success <> True) Then
    System.DebugLog("Failed to load JWK file.")
    Return
End If

//  Get the "jwk" part of the JSON..
Dim json As New Chilkat.JsonObject
success = json.Load(sbJwk2.GetAsString())

Dim jsonJwk As Chilkat.JsonObject
jsonJwk = json.ObjectOf("jwk")
If (json.LastMethodSuccess <> True) Then
    System.DebugLog("No jwk member exists.")
    Return
End If

Dim pubkey2 As New Chilkat.PublicKey
success = pubkey2.LoadFromString(jsonJwk.Emit())
If (success <> True) Then
    System.DebugLog(pubkey2.LastErrorText)
    Return
End If

System.DebugLog("Contained JWK loaded into public key object.")