<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >mcrypt_ofb</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="Mcrypt Encryption Functions" HREF="ref.mcrypt.html"><LINK REL="PREVIOUS" TITLE="mcrypt_module_self_test" HREF="function.mcrypt-module-self-test.html"><LINK REL="NEXT" TITLE="mdecrypt_generic" HREF="function.mdecrypt-generic.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></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 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.mcrypt-module-self-test.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.mdecrypt-generic.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.mcrypt-ofb" ></A >mcrypt_ofb</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN116185" ></A ><P > (PHP 3 >= 3.0.8, PHP 4, PHP 5)</P >mcrypt_ofb -- Encrypt/decrypt data in OFB mode</DIV ><DIV CLASS="refsect1" ><A NAME="AEN116188" ></A ><H2 >Description</H2 >string <B CLASS="methodname" >mcrypt_ofb</B > ( int cipher, string key, string data, int mode, string iv )<BR ></BR >string <B CLASS="methodname" >mcrypt_ofb</B > ( string cipher, string key, string data, int mode [, string iv] )<BR ></BR ><P > The first prototype is when linked against libmcrypt 2.2.x, the second when linked against libmcrypt 2.4.x or higher. The <CODE CLASS="parameter" >mode</CODE > should be either <TT CLASS="constant" ><B >MCRYPT_ENCRYPT</B ></TT > or <TT CLASS="constant" ><B >MCRYPT_DECRYPT</B ></TT >. </P ><P > This function should not be used anymore, see <A HREF="function.mcrypt-generic.html" ><B CLASS="function" >mcrypt_generic()</B ></A > and <A HREF="function.mdecrypt-generic.html" ><B CLASS="function" >mdecrypt_generic()</B ></A > for replacements. </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.mcrypt-module-self-test.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.mdecrypt-generic.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >mcrypt_module_self_test</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.mcrypt.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >mdecrypt_generic</TD ></TR ></TABLE ></DIV ></BODY ></HTML >