Byte arrays to base64 string
<p>Say I have two byte arrays.</p>

<p>In the first scenario, I concatenate the two arrays (using Buffer.BlockCopy), then convert the result to base64 string.</p>

<p>In the second scenario, I convert each byte array into base64 string and then concatenate those strings.</p>

<p>Would the two results be the same?</p>