setkey(3c) [sunos man page]

setkey(3C)						   Standard C Library Functions 						setkey(3C)

NAME

       setkey - set encoding key

SYNOPSIS

       #include <stdlib.h>

       void setkey(const char *key);

DESCRIPTION

       The  setkey()  function	provides  (rather  primitive)  access to the hashing algorithm employed by the crypt(3C) function. The argument of
       setkey() is an array of length 64 bytes containing only the bytes with numerical value of 0 and 1. If this string is divided into groups of
       8,  the	low-order  bit in each group is ignored; this gives a 56-bit key which is used by the algorithm. This is the key that will be used
       with the algorithm to encode a string block passed to encrypt(3C).

RETURN VALUES

       No values are returned.

ERRORS

       The setkey() function will fail if:

       ENOSYS	       The functionality is not supported on this implementation.

USAGE

       In some environments, decoding may not be implemented.  This is related to U.S. Government restrictions on encryption and  decryption  rou-
       tines:  the  DES decryption algorithm cannot be exported outside the U.S.A. Historical practice has been to ship a different version of the
       encryption library without the decryption feature in the routines supplied. Thus the exported version of encrypt() does	encoding  but  not
       decoding.

       Because	setkey()  does	not return a value, applications wishing to check for errors should set errno to 0, call setkey(), then test errno
       and, if it is non-zero, assume an error has occurred.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       crypt(3C), encrypt(3C), attributes(5), standards(5)

SunOS 5.10							    14 Aug 2002 							setkey(3C)

SETKEY(3P)						     POSIX Programmer's Manual							SETKEY(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       setkey -- set encoding key (CRYPT)

SYNOPSIS

       #include <stdlib.h>

       void setkey(const char *key);

DESCRIPTION

       The setkey() function provides access to an implementation-defined encoding algorithm. The argument of setkey() is an array  of	length	64
       bytes  containing  only	the  bytes  with numerical value of 0 and 1. If this string is divided into groups of 8, the low-order bit in each
       group is ignored; this gives a 56-bit key which is used by the algorithm. This is the key that shall be used with the algorithm to encode a
       string block passed to encrypt().

       The  setkey() function shall not change the setting of errno if successful. An application wishing to check for error situations should set
       errno to 0 before calling setkey().  If errno is non-zero on return, an error has occurred.

       The setkey() function need not be thread-safe.

RETURN VALUE

       No values are returned.

ERRORS

       The setkey() function shall fail if:

       ENOSYS The functionality is not supported on this implementation.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       Decoding need not be implemented in all environments. This is related to government  restrictions  in  some  countries  on  encryption  and
       decryption  routines.  Historical practice has been to ship a different version of the encryption library without the decryption feature in
       the routines supplied. Thus the exported version of encrypt() does encoding but not decoding.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       crypt(), encrypt()

       The Base Definitions volume of POSIX.1-2008, <stdlib.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol-
       ogy  --	Portable  Operating  System  Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan-
       dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE
/The Open Group						       2013								SETKEY(3P)