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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | STANDARDS | SEE ALSO | COLOPHON |
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memfrob(3) Library Functions Manual memfrob(3)
memfrob - 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.
The memfrob() function returns a pointer to the obfuscated memory
area.
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────┼───────────────┼─────────┤
│ memfrob() │ Thread safety │ MT-Safe │
└─────────────────────────────────────┴───────────────┴─────────┘
GNU.
bstring(3), strfry(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
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2024-06-26. If you discover any rendering problems in this HTML
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Linux man-pages 6.9.1 2024-05-02 memfrob(3)
Pages that refer to this page: bstring(3), strfry(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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