table of contents
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 attributes(7).
Interface | Attribute | Value |
memfrob () | Thread safety | MT-Safe |
STANDARDS¶
GNU.
SEE ALSO¶
2023-03-30 | Linux man-pages 6.04 |