Lua

Get a JWS Unprotected Header

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.GetUnprotectedH, which copies the optional unprotected header of a signature into a JsonObject.

Background. The unprotected header is present only in JSON serialization forms that carry one. It is not covered by the signature.

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Lua

local chilkat = require("chilkat")

local jws = chilkat.Jws.new()

-- Load the JWS compact serialization.
local jwsCompact = "eyJhbGciOiJIUzI1NiJ9.VGhpcyBpcyB0aGUgY29udGVudCB0byBzaWduLg.<signature>"
local success = jws:load_jws(jwsCompact)
if not success then
    print(jws.last_error_text)
    return
end

-- Copy the optional unprotected header of signature 0 into a JsonObject.  This applies to JWS in a
-- JSON serialization form that carries an unprotected header.
local json = chilkat.JsonObject.new()
success = jws:get_unprotected_h(0, json)
if not success then
    print(jws.last_error_text)
    return
end

json.emit_compact = false
print(json:emit())