Xojo Plugin

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. Xojo Plugin

Dim success As Boolean
success = False

// Imagine we have this JWK:

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

Dim sbJwk As New Chilkat.StringBuilder
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 = False) 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 = False) Then
    System.DebugLog(sbJwk2.LastErrorText)
    Return
End If

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

Dim jsonJwk As New Chilkat.JsonObject
success = json.ObjectOf2("jwk",jsonJwk)
If (success = False) Then
    System.DebugLog(json.LastErrorText)
    Return
End If

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

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