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   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │passwd2des(), xencrypt(), xdecrypt()  │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

BUGS

       The prototypes are missing from the abovementioned include file.

SEE ALSO

       cbc_crypt(3)

COLOPHON

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       information  about  reporting  bugs,  and  the  latest  version  of  this   page,   can   be   found   at
       https://www.kernel.org/doc/man-pages/.

                                                   2019-03-06                                          XCRYPT(3)