Encrypt a string
#include <unistd.h>
void encrypt( char block[64],
int flag );
- 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.
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). |
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.
POSIX 1003.1 XSI
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
crypt(),
setkey()