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diff --git a/man3/memfrob.3 b/man3/memfrob.3 new file mode 100644 index 000000000..d86434335 --- /dev/null +++ b/man3/memfrob.3 @@ -0,0 +1,52 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" 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 1993-04-12 "GNU" "Linux Programmer's Manual" +.SH NAME +memfrob \- frobnicate (encrypt) a memory area +.SH SYNOPSIS +.nf +.B #include <string.h> +.sp +.BI "void *memfrob(void *" s ", size_t " n ); +.fi +.SH DESCRIPTION +The \fBmemfrob()\fP function encrypts 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 \fBmemfrob()\fP on the +encrypted memory area. +.PP +Note that this function is not a proper encryption routine as the XOR +constant is fixed, and is only suitable for hiding strings. +.SH "RETURN VALUE" +The \fBmemfrob()\fP function returns a pointer to the encrypted memory +area. +.SH "CONFORMING TO" +The \fBmemfrob()\fP function is unique to the Linux C Library and +GNU C Library. +.SH "SEE ALSO" +.BR strfry (3) |