Defines the interface for certificates.

PHP version 5

• author: Steve Wamsley <swamsley@gmail.com>
• version: SVN: $Id: Crypt_KeyStore_Entry.php 3919 2008-06-18 23:16:05Z swamsley $
• copyright: 2008 Katanaa
• link: http://phpkeystore.org/Crypt_KeyStore
• license: LGPL License 2.1