[ANN] libchop 0.4, a library for distributed storage and data backup

[Ludovic Courtès]

Hello,

I am pleased to announce the release of libchop 0.4.  Libchop is a C and
Scheme library, and a tool set aimed as a building block for distributed
data storage and data backup applications.

The homepage is located at:
  http://www.nongnu.org/libchop/

Here are the compressed sources:
  http://dl.sv.nongnu.org/releases/libchop/libchop-0.4.tar.gz   (1.2MB)

Here are the GPG detached signatures[*]:
  http://dl.sv.nongnu.org/releases/libchop/libchop-0.4.tar.gz.sig

Here are the MD5 and SHA1 checksums:

50ab7594e908c298f79b2e91fbadd827  libchop-0.4.tar.gz
4bf83df629ed6512aded0c5ba4ace6c11af3a4a8  libchop-0.4.tar.gz

This release was bootstrapped with the following tools:
  Autoconf 2.68
  Automake 1.11.1
  Libtool 2.4
  Gnulib v0.0-5070-gbd5d1e6

Libchop implements storage techniques such as content-based addressing,
content hash keys, Merkle trees, similarity detection, and lossless
compression.  It makes it easy to combine them in different ways.  The
‘chop-archiver’ tool provides access to these features from the command
line; along with ‘chop-block-server’, it allows for remote data
storage.  Example uses of these tools are given in the manual.

Excerpt from the ‘NEWS’ file:

  * New features

  ** New Scheme bindings for GNU Guile 2.0

  See "Guile Bindings" in the manual for details.  The Guile 1.8 bindings
  based on G-Wrap will be removed in a future version.

  ** New `--archive-fd' option for `chop-archiver'

  This allows the archival of data from an arbitrary file descriptor,
  as in "tar cf - /foo/bar | chop-archiver --archive-fd".

  ** New `CTR' and `AESWRAP' cipher modes (from libgcrypt)

  ** New function: `chop_file_stream_open_fd'

  * Packaging improvement, bug fixes

  See `ChangeLog' for details.

Feedback welcome!

Thanks,
Ludo’.

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