Lua Requires Chilkat v11.0.0+

Everyware API RSA Encrypt JSON

See more RSA Examples

Demonstrates how to RSA encrypt JSON using everyware.com's RSA public key. Lua

local chilkat = require("chilkat")

-- This example assumes the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

-- First build the JSON to be encrypted.
local json = chilkat.JsonObject.new()
json:update_string("provider_key", "USER GUID HERE")
json:update_string("menu_item", "payment")
local dt = chilkat.DateTime.new()
dt:set_from_current_system_time()
json:update_string("date_time", dt:get_as_unix_time_str(false))

-- This build JSON like the following:

-- {
--     "provider_key": "USER GUID HERE",
--     "menu_item": "payment",
--     "date_time": "1588163411"
-- }

-- When we sign, we'll want to sign the most compact JSON possible
json.emit_compact = true

-- Everyware's RSA public key is at:  https://docs.everyware.com/docs/everyware-public-rsa-key
local sb = chilkat.StringBuilder.new()
local bCrlf = true
sb:append_line("-----BEGIN PUBLIC KEY-----", bCrlf)
sb:append_line("MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxNbflxUSWQ3XJ1N9dAoh", bCrlf)
sb:append_line("k+uaiFsg3wkPi9LGS/mH8DtHBgZxKyz+oQBDtnDd9FDEo0ql7MMgCMsTAv27W5vk", bCrlf)
sb:append_line("Pu0rm6zhcTeYquWEuVCS7VtVsyTATr0Z9WhqNeZlIRurovJAXl2jRDX6QeY5dayC", bCrlf)
sb:append_line("ubwyG4lBWE4fCakGY6zlh+oaElK0rvblqjYoEg3dn4KPRCYGof8OFxLptHThD4cE", bCrlf)
sb:append_line("T30j+utVafhO0HRyJ4iR3Pigb4GXdWBtJEEEWddZJizMkjFQkyUAoYLOT8EJ2TW3", bCrlf)
sb:append_line("Tz8SvAuHBUEFcPWTSTMAG/bSp5wrYBTXaeEhx+wrYa60OruHuzgmhzKyQVuYlCNJ", bCrlf)
sb:append_line("HdbnassuIRjjSNo25o4AdSlWwpGfBZjAiyEInR+KGpHdhKTxSekJxiwiXUS0UfSG", bCrlf)
sb:append_line("prOpd5PzWaAR7DvjLsdmR9XffxvJCVxC735gLK7hDJKjCajDPHVDr8FSL8xMlrq0", bCrlf)
sb:append_line("nKxtsHeRl1yzoGrRr12+9MiQnHtpqROTNXcXdwe3v+Vh8V5k8v8oIrcgh1+/N7Bd", bCrlf)
sb:append_line("NiRsy1gFHBdu/he/KcDRT/9/acQFMPLQueGfZxUvU5As6pEONjtKX2MUg2fMF6Rc", bCrlf)
sb:append_line("sQVVrLzg0g7EcuHGfuPeKfD/716MvS8NU7rX+2soijCSQv/e18PJPMVDlcMXjnup", bCrlf)
sb:append_line("PPx1tStemesavFlj1okhS6UCAwEAAQ==", bCrlf)
sb:append_line("-----END PUBLIC KEY-----", bCrlf)

local pubkey = chilkat.PublicKey.new()
local success = pubkey:load_from_string(sb:get_as_string())
if not success then
    print(pubkey.last_error_text)
    return
end

local rsa = chilkat.Rsa.new()
success = rsa:use_public_key(pubkey)
if not success then
    print(rsa.last_error_text)
    return
end

-- We probably need a base64Url encoded encrypted key.
-- Using straight-up base64 would potenially include chars that are not URL safe (i.e. have special meanings in URLs)
rsa.encoding_mode = "base64url"

local encryptedJson = rsa:encrypt_string_enc(json:emit(), false)

-- Build the URL
-- Such as:  https://portal.everyware.com/Account/LoginMenu?data={Base64Url_encrypted_JSON}
local sbUrl = chilkat.StringBuilder.new()
sbUrl:append("https://portal.everyware.com/Account/LoginMenu?data=")
sbUrl:append(encryptedJson)

print(sbUrl:get_as_string())