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2019-03-06
Aliases: passwd2des(3), passwd2des(3), passwd2des(3), passwd2des(3), passwd2des(3), passwd2des(3), xdecrypt(3), xdecrypt(3), xdecrypt(3), xdecrypt(3), xdecrypt(3), xdecrypt(3), xencrypt(3), xencrypt(3), xencrypt(3), xencrypt(3), xencrypt(3), xencrypt(3)

manpages-dev

Manual pages about using GNU/Linux for development

man-pages

Linux kernel and C library user-space interface documentation

NAME

xencrypt, xdecrypt, passwd2des - RFS password encryption

SYNOPSIS

#include <rpc/des_crypt.h>
void passwd2des(char *passwd, char *key);
int xencrypt(char *secret, char *passwd);
int xdecrypt(char *secret, char *passwd);

DESCRIPTION

WARNING: Do not use these functions in new code. They do not achieve any type of acceptable cryptographic security guarantees.
The function passwd2des() takes a character string passwd of arbitrary length and fills a character array key of length 8. The array 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 passwd into a DES key.
The xencrypt() function takes the ASCII character string secret given in hex, which must have a length that is a multiple of 16, encrypts it using the DES key derived from passwd by passwd2des(), and outputs the result again in secret as a hex string of the same length.
The xdecrypt() function performs the converse operation.

RETURN VALUE

The functions xencrypt() and xdecrypt() return 1 on success and 0 on error.

VERSIONS

These functions are available in glibc since version 2.1.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
Interface Attribute Value
Thread safety MT-Safe

BUGS

The prototypes are missing from the abovementioned include file.

SEE ALSO

cbc_crypt(3)

COLOPHON

This page is part of release 5.00 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

REFERENCED BY

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