(Perl) Encrypt MIME using RSAES-OAEP with SHA256 and AES-128 content encryption

Demonstrates how to encrypt MIME using RSAES-OAEP with SHA256 and AES-128 content encryption.

Note: This example requires Chilkat v9.5.0.67 or greater.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$mime = chilkat::CkMime->new();

# Create a MIME message to encrypt.
$mime->NewMultipartMixed();
$mime->AddHeaderField("someHeader1","Some value 1");
$mime->AddHeaderField("someHeader2","Some value 2");

$part0 = chilkat::CkMime->new();
$part0->AddHeaderField("hdrA","Some value A");
$part0->AddHeaderField("hdrB","Some value B");
$part0->put_ContentType("text/plain");
$part0->SetBody("This is the plain-text body.");

$part1 = chilkat::CkMime->new();
$part1->AddHeaderField("hdrX","Some value X");
$part1->AddHeaderField("hdrY","Some value Y");
$part1->put_ContentType("text/xml");
$part1->SetBody("<a>This is the XML body</a>");

$mime->AppendPart($part0);
$mime->AppendPart($part1);

# The MIME to be encrypted:
$sbMime = chilkat::CkStringBuilder->new();
$mime->GetMimeSb($sbMime);
print $sbMime->getAsString() . "\r\n";

# 	Content-Type: multipart/mixed; boundary="------------080303020600020604010008"
# 	someHeader1: Some value 1
# 	someHeader2: Some value 2
# 
# 	--------------080303020600020604010008
# 	hdrA: Some value A
# 	hdrB: Some value B
# 	Content-Type: text/plain
# 
# 	This is the plain-text body.
# 	--------------080303020600020604010008
# 	hdrX: Some value X
# 	hdrY: Some value Y
# 	Content-Type: text/xml
# 
# 	<a>This is the XML body</a>
# 	--------------080303020600020604010008--
# 

# Load an RSA-based certificate.
# (Encrypting MIME only requires the public key.  Decrypting MIME requires the private key.)
$cert = chilkat::CkCert->new();
$success = $cert->LoadFromFile("qa_data/rsaes-oaep/cert.pem");
if ($success != 1) {
    print $cert->lastErrorText() . "\r\n";
    exit;
}

# Set the email object properties to indicate the desired encryption.
$mime->put_Pkcs7CryptAlg("aes");
# If AES-256 is desired, set the following property to 256.
$mime->put_Pkcs7KeyLength(128);
$mime->put_OaepPadding(1);
# Other choices for the OAEP hash algorithm are "sha1", "sha384", and "sha512"
$mime->put_OaepHash("sha256");

# Encrypt the MIME (to create S/MIME, which stands for "Secure MIME")
$success = $mime->Encrypt($cert);
if ($success != 1) {
    print $mime->lastErrorText() . "\r\n";
    exit;
}

print "---------------" . "\r\n";
print "Encrypted MIME:" . "\r\n";
print "---------------" . "\r\n";
print $mime->getMime() . "\r\n";

print "Success." . "\r\n";

# ---------------------------------------------------
# This is sample output for RSAES-OAEP encrypted MIME:
# ---------------------------------------------------

# Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
# someHeader1: Some value 1
# someHeader2: Some value 2
# Content-Disposition: attachment; filename="smime.p7m"
# Content-Transfer-Encoding: base64
# 
# MIIDvAYJKoZIhvcNAQcDoIIDrTCCA6kCAQAxggGgMIIBnAIBADB1MGgxCzAJBgNVBAYTAlVTMQsw
# CQYDVQQIDAJJTDEQMA4GA1UEBwwHV2hlYXRvbjEhMB8GA1UECgwYSW50ZXJuZXQgV2lkZ2l0cyBQ
# dHkgTHRkMRcwFQYDVQQDDA5DaGlsa2F0V2lkZ2V0cwIJAMRwugDmvniwMBwGCSqGSIb3DQEBBzAP
# oA0wCwYJYIZIAWUDBAIBBIIBAFaUL1ga1bOrdqYKcMm+FHUacBvzfBxk0fnPA0AMBdN8BvTWT3CN
# YuqBhjOGyq0FpYD9pVZybUuFMCVsVyIW2O62HnsOK58YaPEUUcdH2sI+yjqX9UAn0P0nVDSsVdeK
# W8x9kMfZg+3UP+y1q+lu7VRJO3f2C9oLQpTkc4VW4n7UOcUI0waykLCjCTL8lFDb7/J3GeuMKyhH
# 5riNz50kpbzqn7m2Ks9yA+QmcTdXclclGFr2vwEUFzSdT2pxh/vaUrogCxkYWbQ2eV7vZg6O4kV0
# aqHBqySkPTAzHKiHH8K8GVdlTuJ8350CpICa4T8w7/Ht5I7dyOPPKy4C+rVtrvcwggH+BgkqhkiG
# 9w0BBwEwHQYJYIZIAWUDBAECBBDTC2WNBN+z2I47/4Feu9YqgIIB0MZvl3nC/q/Wzil6HtfQTr12
# Q5moHY+ORzAa1P9XvX2ZUFhW530mV395mQw/A4o4ekmX9eRPEZquYzZPLT8hNeZIuNdhpcSQUmad
# rKnKkR0wKJ3jJ3LhOIohVBQSYs8kVDZKq6lJBIznlsurFelZoNEhyRschhteDZx5rb7fCe8c2+/O
# DHxaqaHCAzm/Bd7kcg6FFfuTZy3tu0PgP5IsXN4OFA3kkvwjAs4XsVS8jdIcmDNBkYieE8WmJOIm
# Mz7mh/CHWLgWfGKa0Dkb9RcbFgLwYNT3GzuXFw9XPbKkEZjEAtJajWbN6P0WQl96YYd9qZxUpGxZ
# zjTHEYzViUdUXolfpLufttrRXyxN1RFWhNFMFbv66xYqklMSgpdM/Mbk+EuvX6eXayDPvDBpfYMw
# NoRAzv1Ony2c0ez9rBemJICicxAzpuvHbRxdjYs63Dnv+TYgpBK12AxWWpPIjXvw0WQKgTC3Tg8s
# EnuGhpENqso/clJBEBSn4+2WhYtYbdI5sVme67lvqQl1Xxy3r18SWaQbyDOwgYi1E+54lMDOxMy0
# y0FPHk5pP45DnXWj+XORPp5LhuZr5mf62YOXSSUwR5P0cXy4Rc+pN5lhRQPCf5z2