Lua

Example: Crypt2.ClearEncryptCerts method

Demonstrates how to call the ClearEncryptCerts method. Lua

local chilkat = require("chilkat")

local crypt = chilkat.Crypt2.new()

-- Tell the crypt object to use 3 certificates.
-- Do this by calling AddEncryptCert for each certificate.

local cert1 = chilkat.Cert.new()
-- ...
-- Load the cert from a source such as a .pfx/.p12 file, smart card, USB token, Apple keychain, Windows certificate store, etc.
-- ...
crypt:add_encrypt_cert(cert1)

local cert2 = chilkat.Cert.new()
-- ...
crypt:add_encrypt_cert(cert2)

local cert3 = chilkat.Cert.new()
-- ...
crypt:add_encrypt_cert(cert3)

-- Params for public-key encryption to create PKCS7 enveloped-data
crypt.crypt_algorithm = "pki"
crypt.pkcs7_crypt_alg = "aes"
crypt.key_length = 256
crypt.oaep_hash = "sha256"
crypt.oaep_padding = true

local bd = chilkat.BinData.new()
-- ...
local success = crypt:encrypt_bd(bd)

-- Let's say we now want to encrypt something else with different certs..
-- First clear the encryption certs.
crypt:clear_encrypt_certs()

local cert4 = chilkat.Cert.new()
-- ...
crypt:add_encrypt_cert(cert4)

local cert5 = chilkat.Cert.new()
-- ...
crypt:add_encrypt_cert(cert5)

-- ...
-- ...

-- Encrypt using cert4 and cert5.
success = crypt:encrypt_bd(bd)