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encrypt()

Encrypt a string

Synopsis:

#include <unistd.h>

void encrypt( char block[64], 
              int flag );

Arguments:

block: A 64-character array of binary values to encrypt. The function stores the encrypted value in the same array.
flag: If the value of flag is 0, the function encrypts block; otherwise, encrypt() fails.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

This function is in libc.a, but not in libc.so (in order to save space).

Description:

The encrypt() function uses the NBS Data Encryption Standard (DES) algorithm and the key you specify by calling setkey() to encrypt the given block of data.

Classification:

POSIX 1003.1 XSI