memfrob
(3)frobnicate (obfuscate) a memory area
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <string.h> void *memfrob(void s[.n], size_t n);
LIBRARY
DESCRIPTION
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.