Lua

Convert Cert + Key to PEM and PFX

See more Certificates Examples

This example is based on the following question from a Chilkat customer:

We receive 2 files :

    MyCertificate.p7b
    MyCertificate-privatekey.pkey

We have to transform these certificate like this:

First convert it to PEM like this:

openssl pkcs7 -in MyCertificate.p7b -inform DER -out MyCertificate.pem -print_certs

Now we get MyCertificate.pem

Last step, we need to convert it to pfx file:

openssl pkcs12 -export -inkey moncertificat-privatekey.pkey  -in  moncertificat.pem -out moncertificat.pfx

Is there a way to make all these steps with Chilkat ?

I will be nice to include this directly in our software instead of askig the user to do it manualy.

Lua

local chilkat = require("chilkat")

local cert = chilkat.Cert.new()
local privKey = chilkat.PrivateKey.new()

-- Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
local success = cert:load_from_file("qa_data/certs/sample_cert_a.cer")
if not success then
    print(cert.last_error_text)
    return
end

-- Load the private key.
-- (The various privKey methods that load from a file will automatically detect
-- the format.  It doesn't actually matter if you try to load a non-PKCS8 format private key
-- by calling LoadPkcs8EncryptedFile -- internally Chilkat will detect the format and will load
-- based on what it finds.)
success = privKey:load_pkcs8_encrypted_file("qa_data/certs/sample_key_a.pkcs8", "password")
if not success then
    print(privKey.last_error_text)
    return
end

-- Write the cert as PEM.
success = cert:export_cert_pem_file("qa_output/cert.pem")

-- Or get the PEM string directly...
print(cert:export_cert_pem())

-- Associate the private key with the cert object.
success = cert:set_private_key(privKey)
if not success then
    print(cert.last_error_text)
    return
end

-- Write the cert + private key to a .pfx file.
success = cert:export_to_pfx_file("qa_data/myPfx.pfx", "password", true)
if not success then
    print(cert.last_error_text)
    return
end

print("Success.")