Manpages - xcrypt.3

xencrypt, xdecrypt, passwd2des - RFS password encryption

  #include <rpc/des_crypt.h>

  void passwd2des(char *passwd, char *key);

  int xencrypt(char *secret, char *passwd);
  int xdecrypt(char *secret, char *passwd);

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.

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

These functions are available in glibc since version 2.1.

For an explanation of the terms used in this section, see *attributes*(7).

The prototypes are missing from the abovementioned include file.

*cbc_crypt*(3)

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