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April, 26th. 2006:
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memfrob
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
memfrob - frobnicate (obfuscate) a memory area
LIBRARY
Standard C library
( libc,~ -lc)
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <string.h>
void *memfrob(size_t n;
void s[n], size_t n);
DESCRIPTION
The
memfrob()
function obfuscates the first
n
bytes of the memory area
s
by exclusiv-ORing each character with the number
42.
The effect can be reversed by using
memfrob()
on the
obfuscated memory area.
Note that this function is not a proper encryption routine as the XOR
constant is fixed, and is suitable only for hiding strings.
RETURN VALUE
The
memfrob()
function returns a pointer to the obfuscated memory
area.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
memfrob()
| Thread safety | M-Safe
|
STANDARDS
GNU.
SEE ALSO
bstring(3),
strfry(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- STANDARDS
-
- SEE ALSO
-
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