164 lines
3.5 KiB
HTML
164 lines
3.5 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of XCRYPT</TITLE>
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</HEAD><BODY>
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<H1>XCRYPT</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2019-03-06<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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xencrypt, xdecrypt, passwd2des - RFS password encryption
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>#include <<A HREF="file:///usr/include/rpc/des_crypt.h">rpc/des_crypt.h</A>></B>
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<P>
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<B>void passwd2des(char </B><I>*passwd</I><B>, char *</B><I>key</I><B>);</B>
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<P>
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<B>int xencrypt(char *</B><I>secret</I><B>, char *</B><I>passwd</I><B>);</B>
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<P>
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<B>int xdecrypt(char *</B><I>secret</I><B>, char *</B><I>passwd</I><B>);</B>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<B>WARNING</B>:
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Do not use these functions in new code. They do not achieve
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any type of acceptable cryptographic security guarantees.
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<P>
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The function
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<B>passwd2des</B>()
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takes a character string
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<I>passwd</I>
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of arbitrary length and fills a character array
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<I>key</I>
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of length 8.
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The array
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<I>key</I>
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is suitable for use as DES key.
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It has odd parity set in bit 0 of each byte.
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Both other functions described here use this function to turn their
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argument
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<I>passwd</I>
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into a DES key.
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<P>
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The
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<B>xencrypt</B>()
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function takes the ASCII character string
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<I>secret</I>
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given in hex,
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which must have a length that is a multiple of 16,
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encrypts it using the DES key derived from
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<I>passwd</I>
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by
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<B>passwd2des</B>(),
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and outputs the result again in
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<I>secret</I>
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as a hex string
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of the same length.
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<P>
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The
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<B>xdecrypt</B>()
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function performs the converse operation.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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The functions
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<B>xencrypt</B>()
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and
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<B>xdecrypt</B>()
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return 1 on success and 0 on error.
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<A NAME="lbAF"> </A>
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<H2>VERSIONS</H2>
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These functions are available in glibc since version 2.1.
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<A NAME="lbAG"> </A>
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<H2>ATTRIBUTES</H2>
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For an explanation of the terms used in this section, see
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<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
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<TABLE BORDER>
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<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>passwd2des</B>(),
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<B>xencrypt</B>(),
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<B>xdecrypt</B>()
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</TD><TD>Thread safety</TD><TD>MT-Safe<BR></TD></TR>
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</TABLE>
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<P>
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<A NAME="lbAH"> </A>
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<H2>BUGS</H2>
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The prototypes are missing from the abovementioned include file.
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<A NAME="lbAI"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+cbc_crypt">cbc_crypt</A></B>(3)
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<A NAME="lbAJ"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="1"><A HREF="#lbAB">NAME</A><DD>
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<DT id="2"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="3"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="4"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="5"><A HREF="#lbAF">VERSIONS</A><DD>
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<DT id="6"><A HREF="#lbAG">ATTRIBUTES</A><DD>
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<DT id="7"><A HREF="#lbAH">BUGS</A><DD>
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<DT id="8"><A HREF="#lbAI">SEE ALSO</A><DD>
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<DT id="9"><A HREF="#lbAJ">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:06:00 GMT, March 31, 2021
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</BODY>
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</HTML>
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