Encrypt a string
#include <unistd.h>
void encrypt( char block[64],
int flag );
libc
The encrypt() function allows limited access to the NBS Data Encryption Standard (DES) algorithm itself. The block argument is a 64 character array of binary values. If the value of flag is 0, the block is encrypted; otherwise, it fails. The encryption is returned in the original array block after using the key specified by setkey() to process it.
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | Yes |
| Thread | Yes |