LibSecRm

Libsecrm (LIBrary for SECure ReMoval) is a library which partially (read below for limitations) ensures secure data deleting by intercepting calls to some C library functions and replacing them by its own substitutes.
The data that would be deleted from a file is first securely wiped, then the original functions are called.
Libsecrm partially also takes care about memory security - some of the memory allocation functions are intercepted, and the allocated memory is wiped before passing it to the calling program.

Requirements for compiling:

a non-root account. Please, NEVER compile or 'make' anything as root.
a working C compiler
development package for the C library (like glibc-devel and glibc-headers) with the signal.h and (especially) fcntl.h, unistd.h and sys/stat.h headers.
The unistd.h contains functions needed for wiping to work at all. Nothing will be done if this file is missing.
The sys/stat.h contains functions needed to check the wiped object's type. Libsecrm will wipe only regular files. If this file is missing, nothing can be wiped.
The dlfcn.h header contains functions needed to call the original functions. It has to have RTLD_NEXT defined. Libsecrm wouldn't work without this, so it won't compile without this.
The fcntl header has functions needed to prevent wiping files that are set to be deleted, but still open. It has to have F_SETLEASE, F_GETSIG and F_SETSIG defined in it (this is available on GNU/Linux, but may not be available everywhere) for this feature to work. Libsecrm will work without this, but strange things may happen. If you don't have this, put /bin/bash in the program ban file and "ICE" (without the double quotes) in the file ban file (read the "Manual configuration" chapter in the "info" documentation).
libdl, the dynamic loading library, with its development package (unless the required functions are in the C library)
the 'make' program

Type './configure' to configure the program for your system.

Type 'make' to compile the program. Documentation comes complied (and can be copied right away), but can be changed and recompiled, if you have the 'makeinfo' program ('texinfo' package).

Type 'make install' to install the program. Read the docs on how to make the program running.

Type 'info libsecrm' (after installation) or 'info doc/libsecrm.info' (before installation) to get help.

RPM dependencies:

libc.so.6 (GLIBC_2.2)

Libsecrm has been added to Softpedia Mac and Softpedia Linux.

THE LIBRARY HAS BEEN TESTED, BUT IT MAY NOW OR LATER CONTAIN ERRORS, WHICH MAY LEAD TO UNINTENTIONAL DATA LOSS. READ THE LICENSE FOR A WARRANTY (THERE IS NONE).

Limitations

Libsecrm can do nothing if:

The program using libsecrm has no write permissions to the file
A program is using direct kernel calls, filesystem calls or non-standard calls, thus bypassing even the C library
Libsecrm is not loaded (read the "Installing" chapter in the "info" docs).
A program is linked statically (so it doesn't use shared libraries and has all the functions compiled in it).
The operating system doesn't support shared libraries (like DOS)
The operating system doesn't support preloading shared libraries before system libraries.

Screenshots of LibSecRm

Available at SourceForge.

System compatibility

LibSecRm compiles on the following systems:

Fedora Core 4 GNU/Linux (i686 CPU)
Mandriva 2008.1 GNU/Linux (i686 CPU)
OpenBSD 3.8 (x86 CPU)

Download LibSecRm

Current version is 1.3.
Download this at SourceForge.

My other software

Check out Wipe Free Space and JYMAG on SourceForge.
See my other free software:

Wipe Free Space - a program for cleaning of free space on filesystems
KonqSec - a set of Konqueror security-related context menu entries
JYMAG - a program for Sagem mobile phones
LibHideIP - a security wrapper library for C library functions which could lead to revealing your local IP address
IMYplay - a program for playing iMelody ringtones (IMY files) and an IMY-to-MIDI converter

AsmDoc - a HTML documentation generator for assembly language
source converters between NASM, FASM and GAS
C header to assembly header converters
Kate/KWrite syntax highlighting for NASM/FASM
some FASM macros
Makefile generator for FASM
Linux 2.6 kernel module helper for FASM
A set of Autoconf macros
Assembly converter for Doxygen
Asm::X86 Perl module

My GPG/PGP key

GnuPG/PGP key used to sign the packages: asc format
Number: 1C56DA1E, SHA1 fingerprint: E91E 699F 1026 D0EF 745E EC3B 353A D368 1C56 DA1E

Contact info

Contact me: bogdro AT users . sourceforge . net (English accepted, just say '[SOFT]' in the title). GnuPG/PGP key the same as above.

Page info

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