Lua

Load RSA Public Key from Hex Modulus and Exponent

See more RSA Examples

Load an RSA public key from a hex modulus and exponent. Lua

local chilkat = require("chilkat")

-- Load a 128-byte (1024-bit) modulus + exponent into a Chilkat public key object..
local modulus = "BF5F4AF9A018B5F324A0C10448C0D3248D9BE78967FDC551A27876AC5789ADCBA8245D3D942AE3799563D895DA801E765D225A54FA15DAB2C4731DD817DCF94A9AD62197074C2349442093A206234BF3747F0E88AA6F538355684CC1FB26FCE029C9050A1DAF9F507C2BABF6EFC9FB16320C8036721BE0279FBB76122C41E429"

local exponent = "00000003"

-- We'll need to re-encode from hex to base64..
local bdModulus = chilkat.BinData.new()
bdModulus:append_encoded(modulus, "hex")
local bdExponent = chilkat.BinData.new()
bdExponent:append_encoded(exponent, "hex")

local xml = chilkat.Xml.new()
xml.tag = "RsaKeyValue"
xml:new_child2("Modulus", bdModulus:get_encoded("base64"))
xml:new_child2("Exponent", bdExponent:get_encoded("base64"))

-- Now load into the pubkey object..
local pubkey = chilkat.PublicKey.new()
local success = pubkey:load_from_string(xml:get_xml())
if not success then
    print(pubkey.last_error_text)
    return
end

print("Success.")