XCRYPT(3)

NAME
xencrypt, xdecrypt, passwd2des - RFS password encryption

LIBRARY
Standard C library (libc, -lc)

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.

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

VERSIONS
These functions are available since glibc 2.1.

BUGS
The prototypes are missing from the abovementioned include file.

SEE ALSO
cbc_crypt(3)