Lua

Add a PFX Source to MailMan for Decryption

Demonstrates the Chilkat MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the MailMan object's internal list of sources used for locating certificates and private keys — for example, to decrypt S/MIME email downloaded from the server. The second argument is the PFX password. This example configures a POP3 connection and registers a PFX source.

Background: When MailMan downloads an encrypted (S/MIME) message, it needs the recipient's private key to decrypt it. On Windows and macOS the OS certificate stores are searched automatically, but when the key lives in a standalone PFX file — common on Linux or in server deployments — AddPfxSourceFile tells MailMan where to find it. A PFX bundles the certificate and its private key in one password-protected file.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the
-- MailMan object's internal list of sources used for locating certificates and private
-- keys (for example, to decrypt downloaded S/MIME email).  The 2nd argument is the PFX
-- password.

local mailman = chilkat.MailMan.new()

-- Configure the POP3 server connection.
mailman.mail_host = "pop.example.com"
mailman.mail_port = 995
mailman.pop_ssl = true
mailman.pop_username = "user@example.com"
mailman.pop_password = "myPassword"

-- Provide a PFX so that encrypted emails downloaded from the server can be decrypted.

local success = mailman:add_pfx_source_file("qa_data/certs/decryption.pfx", "pfx_password")
if not success then
    print(mailman.last_error_text)
    return
end

print("Added the PFX certificate/private-key source.")

-- Note: The path "qa_data/certs/decryption.pfx" is a relative local filesystem path,
-- relative to the current working directory of the running application.