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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)

Check Out this Related Man Page

ENCRYPT(3P)						     POSIX Programmer's Manual						       ENCRYPT(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
encrypt -- encoding function (CRYPT) SYNOPSIS
#include <unistd.h> void encrypt(char block[64], int edflag); DESCRIPTION
The encrypt() function shall provide access to an implementation-defined encoding algorithm. The key generated by setkey() is used to encrypt the string block with encrypt(). The block argument to encrypt() shall be an array of length 64 bytes containing only the bytes with values of 0 and 1. The array is modi- fied in place to a similar array using the key set by setkey(). If edflag is 0, the argument is encoded. If edflag is 1, the argument may be decoded (see the APPLICATION USAGE section); if the argument is not decoded, errno shall be set to [ENOSYS]. The encrypt() 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 encrypt(). If errno is non-zero on return, an error has occurred. The encrypt() function need not be thread-safe. RETURN VALUE
The encrypt() function shall not return a value. ERRORS
The encrypt() function shall fail if: ENOSYS The functionality is not supported on this implementation. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
Historical implementations of the encrypt() function used a rather primitive encoding algorithm. In some environments, decoding might not be implemented. This is related to some Government restrictions on encryption and decryption rou- tines. 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(), setkey() The Base Definitions volume of POSIX.1-2008, <unistd.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 ENCRYPT(3P)

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