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(PHP ActiveX) 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 ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

$mime = new COM("Chilkat_9_5_0.Mime");

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

$part0 = new COM("Chilkat_9_5_0.Mime");
$part0->AddHeaderField('hdrA','Some value A');
$part0->AddHeaderField('hdrB','Some value B');
$part0->ContentType = 'text/plain';
$part0->SetBody('This is the plain-text body.');

$part1 = new COM("Chilkat_9_5_0.Mime");
$part1->AddHeaderField('hdrX','Some value X');
$part1->AddHeaderField('hdrY','Some value Y');
$part1->ContentType = 'text/xml';
$part1->SetBody('<a>This is the XML body</a>');

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

//  The MIME to be encrypted:
$sbMime = new COM("Chilkat_9_5_0.StringBuilder");
$mime->GetMimeSb($sbMime);
print $sbMime->getAsString() . "\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 = new COM("Chilkat_9_5_0.Cert");
$success = $cert->LoadFromFile('qa_data/rsaes-oaep/cert.pem');
if ($success != 1) {
    print $cert->LastErrorText . "\n";
    exit;
}

//  Set the email object properties to indicate the desired encryption.
$mime->Pkcs7CryptAlg = 'aes';
//  If AES-256 is desired, set the following property to 256.
$mime->Pkcs7KeyLength = 128;
$mime->OaepPadding = 1;
//  Other choices for the OAEP hash algorithm are "sha1", "sha384", and "sha512"
$mime->OaepHash = 'sha256';

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

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

print 'Success.' . "\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

?>

 

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