Start PKCS7 type specific classes

src/OpenSSL/PKCS7.php

@@ -30,12 +30,13 @@ class PKCS7 extends OpenSSL\C\CBackedObjectWithOwner
         return $this->ffi->OBJ_obj2nid($this->cObj->type);
     }
 
-    public function verify(string $plain): bool
+    public function toSigned(): PKCS7\Signed
     {
-        $type = $this->getType();
-        if (!in_array($type, [PKCS7::NID_DIGEST, self::NID_SIGNED, self::NID_SIGNED_AND_ENVELOPED])) {
-            throw new \RuntimeException("Can only verify signed or digested data");
+        if ($this->getType() !== self::NID_SIGNED) {
+            throw new \RuntimeException("This PKCS7 isn't of type signed");
         }
+
+        return new PKCS7\Signed($this);
     }
 
     /**
@@ -59,6 +60,7 @@ class PKCS7 extends OpenSSL\C\CBackedObjectWithOwner
         $val = FFI::string($buf, $len);
         // Free buffer via CRYPTO_free as OpenSSL malloc'd it
         $this->ffi->CRYPTO_free($buf);
+
         return $val;
     }
 

src/OpenSSL/PKCS7/Helpers.php

@@ -0,0 +1,30 @@
+<?php
+
+
+namespace Cijber\OpenSSL\PKCS7;
+
+
+use Cijber\OpenSSL\PKCS7;
+
+trait Helpers
+{
+    protected PKCS7 $pkcs7;
+
+    function toDER(): string
+    {
+        return $this->pkcs7->toDER();
+    }
+
+    /**
+     * @return PKCS7
+     */
+    public function getPkcs7(): PKCS7
+    {
+        return $this->pkcs7;
+    }
+
+    public function __construct(PKCS7 $pkcs7)
+    {
+        $this->pkcs7 = $pkcs7;
+    }
+}

src/OpenSSL/PKCS7/Signed.php

@@ -0,0 +1,14 @@
+<?php
+
+
+namespace Cijber\OpenSSL\PKCS7;
+
+
+class Signed
+{
+    use Helpers;
+
+    function getSigners() {
+
+    }
+}