Lua

Encrypt using Cert to produce -----BEGIN PKCS7----- ... -----END PKCS7-----

See more Encryption Examples

Demonstrates how to encrypt using a certificate to produce output such as:

-----BEGIN PKCS7-----
MIIHPwYJKoZIhvcNAQcEoIIHMDCCBywC ...
...
...
-----END PKCS7-----

The certificate to be used is not your own, but the certificate of the intended recipient of the message. Lua

local chilkat = require("chilkat")

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

local crypt = chilkat.Crypt2.new()

-- Specify the encryption to be used.
-- "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped) message.
crypt.crypt_algorithm = "pki"
crypt.pkcs7_crypt_alg = "aes"
crypt.key_length = 128
crypt.oaep_hash = "sha256"
crypt.oaep_padding = true

-- A certificate is needed as the encryption key..
local cert = chilkat.Cert.new()
local success = cert:load_from_file("qa_data/certs/testCert.pem")
if not success then
    print(cert.last_error_text)
    return
end

-- Tell the crypt object to use the certificate.
crypt:set_encrypt_cert(cert)

local toBeEncrypted = "This string is to be encrypted."

-- Get the result in multi-line BASE64 MIME format.
crypt.encoding_mode = "base64_mime"

local encryptedStr = crypt:encrypt_string_enc(toBeEncrypted)
if not success then
    print(crypt.last_error_text)
    return
end

-- Make a "-----BEGIN PKCS7-----" ... "-----END PKCS7-----" sandwich...
local sb = chilkat.StringBuilder.new()
sb:append_line("-----BEGIN PKCS7-----", true)
sb:append(encryptedStr)
sb:append_line("-----END PKCS7-----", true)

local outStr = sb:get_as_string()

print(outStr)

-- Sample output:

-- -----BEGIN PKCS7-----
-- MIICYQYJKoZIhvcNAQcDoIICUjCCAk4CAQAxggH5MIIB9QIBADCBsTCBmzELMAkGA1UEBhMCR0Ix
-- GzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMR
-- Q09NT0RPIENBIExpbWl0ZWQxQTA/BgNVBAMTOENPTU9ETyBTSEEtMjU2IENsaWVudCBBdXRoZW50
-- aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBAhEAuBl4qE2MODB05C5h53M5UDA4BgkqhkiG9w0B
-- AQcwK6APMA0GCWCGSAFlAwQCAQUAoRgwFgYJKoZIhvcNAQEIMAkGBSsOAwIaBQAEggEAyZejlE37
-- awl0bCWVbOCqf9yLSN17mZRamG8FHDh3nNu11G0+oyJtsPDEnSKsQig0V67MZ+hcWV+uf4ytcjyx
-- H0gs5uex+LwkB+c3ZTOt18IYWFtRilg1HFy1ZN3t0D2QbxYy+i1TXOOwp3gAHL45vRCJ0FbKyQ36
-- pKl0XLe+lRvp2EiJCKVjxtX8VcZOKT4xkG7yOARaCQceth6pA58Dg0yzAz7w4nD2UgAlNzrXG69X
-- e+7e7yfBv47RRqFiQqDpCn+fM/PmFbUyqBppMwc64yP+fJek8VyJw2/UaXWWM4iSKSflk90tiHwf
-- loEU3It4arnSv94fZQo0v129aBqpWzBMBgkqhkiG9w0BBwEwHQYJYIZIAWUDBAECBBCohUgm5qX+
-- TE6PxtPCmWi8gCBgbNg39emAB+AqLozm+vSLjZOGfg3M52gccKUJ8tg8XQ==
-- -----END PKCS7-----