PHP Extension

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. PHP Extension

<?php

include("chilkat.php");

$success = false;

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

$crypt = new CkCrypt2();

// Specify the encryption to be used.
// "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped) message.
$crypt->put_CryptAlgorithm('pki');
$crypt->put_Pkcs7CryptAlg('aes');
$crypt->put_KeyLength(128);
$crypt->put_OaepHash('sha256');
$crypt->put_OaepPadding(true);

// A certificate is needed as the encryption key..
$cert = new CkCert();
$success = $cert->LoadFromFile('qa_data/certs/testCert.pem');
if ($success != true) {
    print $cert->lastErrorText() . "\n";
    exit;
}

// Tell the crypt object to use the certificate.
$crypt->SetEncryptCert($cert);

$toBeEncrypted = 'This string is to be encrypted.';

// Get the result in multi-line BASE64 MIME format.
$crypt->put_EncodingMode('base64_mime');

$encryptedStr = $crypt->encryptStringENC($toBeEncrypted);
if ($success != true) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

// Make a "-----BEGIN PKCS7-----" ... "-----END PKCS7-----" sandwich...
$sb = new CkStringBuilder();
$sb->AppendLine('-----BEGIN PKCS7-----',true);
$sb->Append($encryptedStr);
$sb->AppendLine('-----END PKCS7-----',true);

$outStr = $sb->getAsString();

print $outStr . "\n";

// 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-----

?>