<HTML ><HEAD ><TITLE >openssl_open</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="OpenSSL functions" HREF="ref.openssl.html"><LINK REL="PREVIOUS" TITLE="openssl_get_publickey" HREF="function.openssl-get-publickey.html"><LINK REL="NEXT" TITLE="openssl_pkcs7_decrypt" HREF="function.openssl-pkcs7-decrypt.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.openssl-get-publickey.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.openssl-pkcs7-decrypt.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.openssl-open" ></A >openssl_open</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN68175" ></A ><P > (PHP 4 >= 4.0.4)</P >openssl_open -- Open sealed data</DIV ><DIV CLASS="refsect1" ><A NAME="AEN68178" ></A ><H2 >Description</H2 >bool <B CLASS="methodname" >openssl_open</B > ( string sealed_data, string open_data, string env_key, mixed priv_key_id)<BR ></BR ><P > Returns <TT CLASS="constant" ><B >TRUE</B ></TT > on success or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. If successful the opened data is returned in <TT CLASS="parameter" ><I >open_data</I ></TT >. </P ><P > <B CLASS="function" >openssl_open()</B > opens (decrypts) <TT CLASS="parameter" ><I >sealed_data</I ></TT > using the private key associated with the key identifier <TT CLASS="parameter" ><I >priv_key_id</I ></TT > and the envelope key <TT CLASS="parameter" ><I >env_key</I ></TT >, and fills <TT CLASS="parameter" ><I >open_data</I ></TT > with the decrypted data. The envelope key is generated when the data are sealed and can only be used by one specific private key. See <A HREF="function.openssl-seal.html" ><B CLASS="function" >openssl_seal()</B ></A > for more information. </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN68207" ></A ><P ><B >Example 1. <B CLASS="function" >openssl_open()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="php" >// $sealed and $env_key are assumed to contain the sealed data // and our envelope key, both given to us by the sealer. // fetch private key from file and ready it $fp = fopen("/src/openssl-0.9.6/demos/sign/key.pem", "r"); $priv_key = fread($fp, 8192); fclose($fp); $pkeyid = openssl_get_privatekey($priv_key); // decrypt the data and store it in $open if (openssl_open($sealed, $open, $env_key, $pkeyid)) echo "here is the opened data: ", $open; else echo "failed to open data"; // free the private key from memory openssl_free_key($pkeyid);</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > See also <A HREF="function.openssl-seal.html" ><B CLASS="function" >openssl_seal()</B ></A >. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.openssl-get-publickey.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.openssl-pkcs7-decrypt.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >openssl_get_publickey</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.openssl.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >openssl_pkcs7_decrypt</TD ></TR ></TABLE ></DIV ></BODY ></HTML >