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Load ECC Public Key from JWK Format (JSON Web Key)

Demonstrates how to load an ECC public key from JWK (JSON Web Key) format.
Note: This example requires Chilkat v9.5.0.66 or later.
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Local $bSuccess = False

; Note: This example requires Chilkat v9.5.0.66 or later.

; First build a JWK sample to load..
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.UpdateString("kty","EC")
$oJson.UpdateString("crv","P-256")
$oJson.UpdateString("x","oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE")
$oJson.UpdateString("y","vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU")

; The JSON contains the following:
; { 
;   "kty": "EC",
;   "crv": "P-256",
;   "x": "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE",
;   "y": "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU",
; }

; Note: The JSON can contain other members, such as "use", "kid", or anything else.  These will be ignored.
$oJson.EmitCompact = False

; Show the JWK string to be loaded:
Local $sJwkStr = $oJson.Emit()

$oPubKey = ObjCreate("Chilkat.PublicKey")
; The LoadFromString method will automatically detect the format.
$bSuccess = $oPubKey.LoadFromString($sJwkStr)
If ($bSuccess <> True) Then
    ConsoleWrite($oPubKey.LastErrorText & @CRLF)
    Exit
EndIf

; OK.. the JWK is loaded.  It can be used in whatever way desired...

; The key can be retrieved in any other format, such as XML or PEM..
ConsoleWrite($oPubKey.GetXml() & @CRLF)

; XML output:
; <ECCPublicKey curve="secp256r1" 
;    x="A01532A3C0900053DE60FBEFEFCCA58793301598D308B41E6F4E364E388C2711" 
;    y="BEF432C599148C94143D4FF46C2CB73E3E6A41D7EEF23C047EA11E60667DE425">
;    MIIBSzCCAQMGByqGSM49AgEwgfcCAQEwLAYHKoZIzj0BAQIhAP////8AAAABAAAAAAAAAAAAAAAA////////////////MFsEIP////8AAAABAAAAAAAAAAAAAAAA///////////////8BCBaxjXYqjqT57PrvVV2mIa8ZR0GsMxTsPY7zjw+J9JgSwMVAMSdNgiG5wSTamZ44ROdJreBn36QBEEEaxfR8uEsQkf4vOblY6RA8ncDfYEt6zOg9KE5RdiYwpZP40Li/hp/m47n60p8D54WK84zV2sxXs7LtkBoN79R9QIhAP////8AAAAA//////////+85vqtpxeehPO5ysL8YyVRAgEBA0IABKAVMqPAkABT3mD77+/MpYeTMBWY0wi0Hm9ONk44jCcRvvQyxZkUjJQUPU/0bCy3Pj5qQdfu8jwEfqEeYGZ95CU=
; </ECCPublicKey>

; Choose PCKS1 or PCKS8 PEM format..
Local $bPreferPkcs1 = False
ConsoleWrite($oPubKey.GetPem($bPreferPkcs1) & @CRLF)

; PEM output
; -----BEGIN PUBLIC KEY-----
; MIIBSzCCAQMGByqGSM49AgEwgfcCAQEwLAYHKoZIzj0BAQIhAP////8AAAABAAAA
; AAAAAAAAAAAA////////////////MFsEIP////8AAAABAAAAAAAAAAAAAAAA////
; ///////////8BCBaxjXYqjqT57PrvVV2mIa8ZR0GsMxTsPY7zjw+J9JgSwMVAMSd
; NgiG5wSTamZ44ROdJreBn36QBEEEaxfR8uEsQkf4vOblY6RA8ncDfYEt6zOg9KE5
; RdiYwpZP40Li/hp/m47n60p8D54WK84zV2sxXs7LtkBoN79R9QIhAP////8AAAAA
; //////////+85vqtpxeehPO5ysL8YyVRAgEBA0IABKAVMqPAkABT3mD77+/MpYeT
; MBWY0wi0Hm9ONk44jCcRvvQyxZkUjJQUPU/0bCy3Pj5qQdfu8jwEfqEeYGZ95CU=
; -----END PUBLIC KEY-----