memfrob - Man Page

frobnicate (obfuscate) a memory area


Standard C library (libc, -lc)


#define _GNU_SOURCE             /* See feature_test_macros(7) */
#include <string.h>

void *memfrob(void s[.n], size_t n);


The memfrob() function obfuscates the first n bytes of the memory area s by exclusive-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.


For an explanation of the terms used in this section, see attributes(7).

memfrob()Thread safetyMT-Safe


The memfrob() function is unique to the GNU C Library.

See Also

bstring(3), strfry(3)

Referenced By

bstring(3), strfry(3).

2022-12-15 Linux man-pages 6.02