Lua Requires Chilkat v11.0.0+

RSA Sign utf-8 Byte Representation of String

See more RSA Examples

Demontstrates how to sign the utf-8 byte representation of a string. Lua

local chilkat = require("chilkat")

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

-- Load an RSA private key for signing.
local privKey = chilkat.PrivateKey.new()
local success = privKey:load_encrypted_pem_file("qa_data/pem/rsa_passwd.pem", "passwd")
if not success then
    print(privKey.last_error_text)
    return
end

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

local originalData = "This is the string to be hashed an RSA signed."

-- Indicate that we want the utf-8 byte representation of the string to be signed
rsa.charset = "utf-8"

-- We want the RSA signature in base64 format
rsa.encoding_mode = "base64"

local sigBase64 = rsa:sign_string_enc(originalData, "sha256")
print(sigBase64)