Create a JWS into a StringBuilder

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.CreateJwsSb, which creates a JWS and writes it into a StringBuilder.

local chilkat = require("chilkat")

local jws = chilkat.Jws.new()

-- Set the protected header for signer 0, specifying the signature algorithm (alg).
local header = chilkat.JsonObject.new()
header:update_string("alg", "HS256")
local success = jws:set_protected_header(0, header)
if not success then
    print(jws.last_error_text)
    return
end

-- Set the payload to be signed.
local bIncludeBom = false
success = jws:set_payload("This is the content to sign.", "utf-8", bIncludeBom)
if not success then
    print(jws.last_error_text)
    return
end

-- Provide the HMAC key (base64) for signer 0.  In production, obtain the key from a secure source
-- rather than hard-coding it.
local base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
success = jws:set_mac_key(0, base64Key, "base64")
if not success then
    print(jws.last_error_text)
    return
end

-- Create the JWS and write it into a StringBuilder.
local sbJws = chilkat.StringBuilder.new()
success = jws:create_jws_sb(sbJws)
if not success then
    print(jws.last_error_text)
    return
end

print(sbJws:get_as_string())