setkey()

Set the key used in encryption

Synopsis:

#include <stdlib.h>

void setkey( const char *__key );

Arguments:

__key

A 64-character array of binary values (numeric 0 or 1).

Library:

libc

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

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

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Description:

The setkey() function allows limited access to the NBS Data Encryption Standard (DES) algorithm itself. It derives a 56-bit key from the given __key by dividing the array into groups of 8 and ignoring the last bit in each group.

Classification:

POSIX 1003.1 XSI

See also:

crypt(), encrypt()