memfrob(3) Library Functions Manual memfrob(3)
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(void s[.n], size_t n);
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.
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 at-
tributes(7).
┌────────────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├────────────────────────────────────────────┼───────────────┼─────────┤
│memfrob() │ Thread safety │ MT-Safe │
└────────────────────────────────────────────┴───────────────┴─────────┘
STANDARDS
The memfrob() function is unique to the GNU C Library.
SEE ALSO
bstring(3), strfry(3)
Linux man-pages 6.03 2022-12-15 memfrob(3)
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