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Request #71992 The $iv parameter should be required since E_WARNING is thrown without it
Submitted: 2016-04-08 16:44 UTC Modified: 2016-05-02 14:29 UTC
From: markreodica at gmail dot com Assigned: bukka (profile)
Status: Wont fix Package: OpenSSL related
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
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 [2016-04-08 16:44 UTC] markreodica at gmail dot com 
Description:
------------
---
From manual page: http://www.php.net/function.openssl-encrypt
---

The manual says: "Emits an E_WARNING level error if an empty value is passed in via the iv parameter."

Because of this behavior, the $iv parameter should be required. The parameter should not be labeled as optional if it's throwing an E_WARNING if not used.

Test script:
---------------
Test script is not really needed.

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 [2016-05-02 14:26 UTC] bukka@php.net
-Status: Open +Status: Wont fix -Assigned To: +Assigned To: bukk
 [2016-05-02 14:29 UTC] bukka@php.net
-Assigned To: bukk +Assigned To: bukka
 [2016-05-02 14:29 UTC] bukka@php.net 
This is just an incorrect documentation. The IV parameter depends on cipher mode. It means that it's not required for ECB mode or some weak ciphers like RC4. The function is marked as not documented but we will hopefully improve it at some point.
 
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