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| author | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-05 23:03:38 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-05 23:03:47 +0200 |
| commit | 70ac1c4785fc1e158ab2349a962dba2526bf4fbc (patch) | |
| tree | bff270e2496dd284bccfc1271b43946f5d225224 /man/man3/memfrob.3 | |
| parent | 5423a6f86b2b920a5f3e8cf8d759b513050f2d33 (diff) | |
| download | man-pages-70ac1c4785fc1e158ab2349a962dba2526bf4fbc.tar.gz | |
src.mk, All pages: Move man* to man/
The root of the repository is becoming a bit overpopulated and
unorganized, due to the recent addition of more mandirs, and more
informative and configuration files too. Let's create a specific
mandir <man/> that contains the mandirs <man[1-8]*>.
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Diffstat (limited to 'man/man3/memfrob.3')
| -rw-r--r-- | man/man3/memfrob.3 | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/man/man3/memfrob.3 b/man/man3/memfrob.3 new file mode 100644 index 0000000000..9f26f5e0f0 --- /dev/null +++ b/man/man3/memfrob.3 @@ -0,0 +1,65 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" Modified Sat Jul 24 18:54:45 1993 by Rik Faith (faith@cs.unc.edu) +.TH MEMFROB 3 2021-03-22 "Linux man-pages (unreleased)" +.SH NAME +memfrob \- frobnicate (obfuscate) a memory area +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */" +.B #include <string.h> +.PP +.BI "void *memfrob(void *" s ", size_t " n ); +.fi +.SH DESCRIPTION +The +.BR memfrob () +function obfuscates the first \fIn\fP bytes of the +memory area \fIs\fP by exclusive-ORing each character with the number +42. +The effect can be reversed by using +.BR memfrob () +on the +obfuscated memory area. +.PP +Note that this function is not a proper encryption routine as the XOR +constant is fixed, and is suitable only for hiding strings. +.SH RETURN VALUE +The +.BR memfrob () +function returns a pointer to the obfuscated memory +area. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.ad l +.nh +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.BR memfrob () +T} Thread safety MT-Safe +.TE +.hy +.ad +.sp 1 +.SH STANDARDS +The +.BR memfrob () +function is unique to the +GNU C Library. +.SH SEE ALSO +.BR bstring (3), +.BR strfry (3) |