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Files from Folkert van Heusden

Email addressfolkert at vanheusden.com
First Active2003-10-30
Last Active2013-01-23
Listener 2.2
Posted Jan 23, 2013
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

Changes: This is a maintenance release, fixing all kinds of small bugs.
tags | tool
systems | linux
MD5 | 7f8bc7e4c01025cbe2dc03230ab7336b
Entropy Broker RNG 2.1
Posted Dec 22, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: This release adds a Web interface for viewing usage statistics, per-user bandwidth limits, and many small fixes.
tags | encryption
systems | linux
MD5 | db1ea8c8a742391f553616ceee3435d6
Entropy Broker RNG 2.0.1
Posted Nov 22, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: This release fixes crashes with the Linux kernel client.
tags | tool, encryption
systems | linux
MD5 | 75fff2e094d150d29d86deaa15782fab
Entropy Broker RNG 2.0
Posted Oct 30, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: Entropy broker is now fully multi-threaded so that no client can block the broker, and higher bitrates can now be achieved. The OpenSSL dependency has been replaced by the crypto++ library. A 'configure' script has been added. This release has been checked for software defects with Coverity. The network protocol has been adapted for bigger block sizes. Ciphers/hashes are now fully user selectable. There is reduced broker entropy usage.
tags | tool, encryption
systems | linux
MD5 | 87e3bde461e6dafa8fee692541955cb9
Entropy Broker RNG 1.2
Posted Sep 18, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: This release has full IPv6 support, has bps output fixes, can now retrieve entropy data from smart cards, and has support for multiple broker servers. EGD server/client now supports TCP as well (for better compatibility with EntropyKey). There are fixes for Fedora and Coverity warning fixes.
tags | encryption
systems | linux
MD5 | 3b28e4bb24529bf31687b2e60a685b94
Entropy Broker RNG 1.1
Posted Sep 4, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: Fix for busy-loop when pools empty.
tags | encryption
systems | linux
MD5 | a3b7674f95a1595a3eff97af1c617b1a
Entropy Broker RNG 1.0.1
Posted Aug 14, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: This is an important bugfix release. This version replaces the ivec initializer code with something more sensible.
tags | encryption
systems | linux
MD5 | 0599181db7ea55d1885563b285b26990
Entropy Broker RNG 1.0
Posted Aug 7, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: EGD client now fully implements the EGD protocol. A network protocol fix was implemented.
tags | encryption
systems | linux
MD5 | f6138b5aab418f3ad2c629194ea6cb46
Entropy Broker RNG 0.9
Posted Jul 26, 2012
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: video4linux server is now compatible with video4linux2. It will now dump and restore the pool-contents.
tags | tool, encryption
systems | linux
MD5 | 4dfdae989a638eb5ab63b860fa5f8d07
Video Entropyd 2.0
Posted May 10, 2012
Authored by Folkert van Heusden | Site vanheusden.com

video-entropyd is a program to add entropy data from video4linux devices to the kernel random driver.

Changes: This version is now compatible with recent kernels (kernels that export the video4linux2 API).
tags | kernel, encryption
systems | linux
MD5 | dab5bb2687bc43ed7e51962de904fd4e
LibPRNGWrap 2.0.0
Posted Oct 5, 2011
Authored by Folkert van Heusden | Site vanheusden.com

libprngwrap is a preload-library (so that it doesn't require any changes to the software it alters) which replaces the libc rand() random() and *rand48() calls by code that gets data from /dev/urandom. This might be a little bit more secure.

Changes: This release adds compatibility fixes and implements all re-entrant PRNG functions from libc.
tags | library
systems | linux
MD5 | bdd8fdbabf3984417cfcdd131e165896
Listener 2.0.1
Posted Aug 2, 2011
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

Changes: This version now uses portaudio. This means it is more stable and should run on other platforms (such as Mac OS X). This version also has a new, more flexible commandline format for selecting sample rate and such.
systems | linux
MD5 | c793da01635e25ec04b87d3ed83d359d
Listener 2.0.0
Posted Aug 6, 2010
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

Changes: First version which is using ALSA for sound I/O.
systems | linux
MD5 | e7eda8674d64bc9e9a60e7eb4a0d441a
Entropy Broker RNG
Posted Sep 1, 2009
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: This release adds support for the EGD (entropy gathering daemon) Unix domain socket interface so that EntropyBroker can also retrieve entropy data from an EntropyKey.
tags | encryption
MD5 | d8f9e4dbbffb6abb4422be3f10ed4fd3
Entropy Broker RNG
Posted Jun 24, 2009
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: This release adds a serial correlation coefficient checker for data sent and received, cleans up logging, handles session timeouts more gracefully, implements a configuration file, and has code cleanup.
tags | encryption
MD5 | 47f25cbd530caa4edf29e2796ac091e9
Entropy Broker RNG
Posted Jun 17, 2009
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

Changes: sever_stream now also supports serial devices, Added FIPS 140-2 test.
tags | encryption
MD5 | a98d2a260e7972da04ea75a81b704031
Entropy Broker RNG
Posted Jun 15, 2009
Authored by Folkert van Heusden | Site vanheusden.com

Entropy Broker is an infrastructure for distributing cryptographically secure random numbers (entropy data) from one or more servers to one or more clients. Entropy Broker allows you to distribute entropy data (random values) to /dev/random devices from other systems (real servers or virtualised systems). It helps preventing that the /dev/random device gets depleted; an empty /dev/random-device can cause programs to hang (waiting for entropy data to become available). This is useful for systems that need to generate encryption keys, run VPN software or run a casino website.

tags | encryption
MD5 | dd369ca7182c7c399e9606377f63110d
Audio Entropyd /dev/random Feeder
Posted May 3, 2009
Authored by Folkert van Heusden | Site vanheusden.com

audio-entropyd feeds the /dev/random device with entropy data read from an audio device. The audio data is not copied as is, but first 'de-biased' and analyzed to determine how many bits of entropy are in it. This program is useful for systems doing many cryptographic tasks like VPN endpoints or GPG clients; it helps prevent the /dev/random device from being depleted and blocking reads.

Changes: There are major bugfixes. Users are urged to install this release. It also adds ALSA support.
tags | encryption
MD5 | f8d71e214755b93a2da3dfa29157ef37
listener-1.7.2.tgz
Posted Dec 28, 2005
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

Changes: Added one-shot recording. Can now write its pid to a file when running in daemon mode.
systems | linux
MD5 | 98d73f957d902dd17e7b4d334dcdeaa0
listener-0.8.tgz
Posted Dec 31, 2004
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

Changes: Added external filter support.
systems | linux
MD5 | bb99dc9d440bd6a1c08f3470f5163bda
listener-0.6.tgz
Posted Dec 11, 2004
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

Changes: One can now configure several parameters via the commandline.
systems | linux
MD5 | 6c71df6f7b32eeec9a4db487179e539d
libsd-1.0.1.tgz
Posted Apr 3, 2004
Authored by Folkert van Heusden | Site vanheusden.com

libsd is a library that allows any application to securely delete files by writing several bitpatterns over a file before removing it from a filesystem. It does this by replacing various library functions like (f)truncate(64).

tags | library
MD5 | 4a02df099f6e040c00550b347e0d4f14
listener-0.4.tgz
Posted Mar 12, 2004
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

Changes: If the sound ends, one can now let an external script/program be executed. Samples can now be compressed with several compression schemes.
systems | linux
MD5 | b6f09c40a575856e20612aa3e191ced9
listener-0.3.tgz
Posted Mar 1, 2004
Authored by Folkert van Heusden | Site vanheusden.com

This program listens for sound. If it detects any, it starts recording automatically and also automatically stops when things become silent again.

systems | linux
MD5 | 6200058e488ecc083b8d3fe7b9ae873a
fp-2.4.22.patch.gz
Posted Oct 30, 2003
Authored by Folkert van Heusden | Site vanheusden.com

The Linux-kernel security patch for kernel v2.4.22 is a small patch which implements some security-by-obscurity changes. Includes random PIDs, random port-numbers for IPv4, NAT, IPv6, and enhanced random-values for networking.

tags | kernel, patch
systems | linux, unix
MD5 | c1d28e0a1038ab27c8fa6729f13eaa85
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