Move to more PSR-4 standards.

lib/OpenPgP/SignaturePacket/EmbeddedSignaturePacket.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Leenooks\OpenPGP\SignaturePacket;
+
+use Leenooks\OpenPGP\SignaturePacket;
+
+/**
+ * @see http://tools.ietf.org/html/rfc4880#section-5.2.3.26
+ */
+class EmbeddedSignaturePacket extends SignaturePacket
+{
+	protected $tag = 32;
+
+	function header_and_body(): array
+	{
+		$body = $this->body();												// Get body first, we will need it's length
+		$size = chr(255).pack('N',strlen($body)+1);		// Use 5-octet lengths + 1 for tag as first packet body octet
+		$tag = chr($this->tag);
+
+		return ['header'=>$size.$tag,'body'=>$body];
+	}
+}