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(PHP Extension) Encrypt using Cert to produce -----BEGIN PKCS7----- ... -----END PKCS7-----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 // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // 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----- ?> |
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