(PHP ActiveX) RSA Encrypt and OpenSSL Decrypt

Demonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt.

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.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rsa')
$rsa = new COM("Chilkat.Rsa");

$success = $rsa->GenerateKey(2048);

// privKey is a Chilkat.PrivateKey
$privKey = $rsa->ExportPrivateKeyObj();
$success = $privKey->SavePkcs8PemFile('qa_output/privKey.pem');

$rsa->EncodingMode = 'base64';
$plainText = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890';
$bUsePrivateKey = 0;
$encryptedStr = $rsa->encryptStringENC($plainText,$bUsePrivateKey);

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData')
$bd = new COM("Chilkat.BinData");
$bd->AppendEncoded($encryptedStr,'base64');
$success = $bd->WriteFile('qa_output/enc.dat');

// The OpenSSL command to decrypt is:
// openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt

print 'OK' . "\n";

?>