How to generate a string containing private and public key in PhP?
<p>I saw this code:</p>

<pre><code>&lt;?php
class MyEncryption
{

    public $pubkey = '...public key here...';
    public $privkey = '...private key here...';

    public function encrypt($data)
    {
        if (openssl_public_encrypt($data, $encrypted, $this-&gt;pubkey))
            $data = base64_encode($encrypted);
        else
            throw new Exception('Unable to encrypt data. Perhaps it is bigger than the key size?');

        return $data;
    }

    public function decrypt($data)
    {
        if (openssl_private_decrypt(base64_decode($data), $decrypted, $this-&gt;privkey))
            $data = $decrypted;
        else
            $data = '';

        return $data;
    }
}


?&gt;
</code></pre>

<p>What are samples of public_key? What kind of public key should be put on $pubkey? Should it be base_64encoded or not? How do I generate one?</p>

<p>I added:</p>

<pre><code>$privKey = openssl_pkey_new();
</code></pre>

<p>And all I got is $privKey==false</p>
