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-'\" t
-.\"  Copyright 2003 walter harms (walter.harms@informatik.uni-oldenburg.de)
-.\"
-.\" SPDX-License-Identifier: GPL-1.0-or-later
-.\"
-.\"  this is the 3rd type of interface for cryptographic routines
-.\"  1. encrypt() expects a bit field
-.\"  2. cbc_crypt() byte values
-.\"  3. xencrypt() a hexstring
-.\"  to bad to be true :(
-.\"
-.TH XCRYPT 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-xencrypt, xdecrypt, passwd2des \- RFS password encryption
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B "#include <rpc/des_crypt.h>"
-.PP
-.BI "void passwd2des(char " *passwd ", char *" key ");"
-.PP
-.BI "int xencrypt(char *" secret ", char *" passwd ");"
-.BI "int xdecrypt(char *" secret ", char *" passwd ");"
-.fi
-.SH DESCRIPTION
-.BR WARNING :
-Do not use these functions in new code.
-They do not achieve any type of acceptable cryptographic security guarantees.
-.PP
-The function
-.BR passwd2des ()
-takes a character string
-.I passwd
-of arbitrary length and fills a character array
-.I key
-of length 8.
-The array
-.I key
-is suitable for use as DES key.
-It has odd parity set in bit 0 of each byte.
-Both other functions described here use this function to turn their
-argument
-.I passwd
-into a DES key.
-.PP
-The
-.BR xencrypt ()
-function takes the ASCII character string
-.I secret
-given in hex,
-.\" (over the alphabet 0123456789abcdefABCDEF),
-which must have a length that is a multiple of 16,
-encrypts it using the DES key derived from
-.I passwd
-by
-.BR passwd2des (),
-and outputs the result again in
-.I secret
-as a hex string
-.\" (over the alphabet 0123456789abcdef)
-of the same length.
-.PP
-The
-.BR xdecrypt ()
-function performs the converse operation.
-.SH RETURN VALUE
-The functions
-.BR xencrypt ()
-and
-.BR xdecrypt ()
-return 1 on success and 0 on error.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.ad l
-.nh
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface	Attribute	Value
-T{
-.BR passwd2des (),
-.BR xencrypt (),
-.BR xdecrypt ()
-T}	Thread safety	MT-Safe
-.TE
-.hy
-.ad
-.sp 1
-.SH VERSIONS
-These functions are available since glibc 2.1.
-.SH BUGS
-The prototypes are missing from the abovementioned include file.
-.SH SEE ALSO
-.BR cbc_crypt (3)