Visual FoxPro

Get the JWE Protected Header

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.GetProtectedHeader, which copies the decoded shared JWE protected header into a JsonObject.

Background. Only the protected header is returned; it is not merged with the shared unprotected header or any per-recipient header.

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Visual FoxPro

LOCAL lnSuccess
LOCAL loJwe
LOCAL lcJweCompact
LOCAL loJson

lnSuccess = 0

loJwe = CreateObject('Chilkat.Jwe')

*  Load the JWE.
lcJweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>"
lnSuccess = loJwe.LoadJwe(lcJweCompact)
IF (lnSuccess = 0) THEN
    ? loJwe.LastErrorText
    RELEASE loJwe
    CANCEL
ENDIF

*  Copy the decoded shared JWE protected header into a JsonObject.  Only the protected header is
*  returned; it is not merged with the unprotected or per-recipient headers.
loJson = CreateObject('Chilkat.JsonObject')
lnSuccess = loJwe.GetProtectedHeader(loJson)
IF (lnSuccess = 0) THEN
    ? loJwe.LastErrorText
    RELEASE loJwe
    RELEASE loJson
    CANCEL
ENDIF

loJson.EmitCompact = 0
? loJson.Emit()

RELEASE loJwe
RELEASE loJson