I am pleased to announce NNCP 5.0.0 release availability!

NNCP (Node to Node copy) is a collection of utilities simplifying
secure store-and-forward files and mail exchanging.

This utilities are intended to help build up small size (dozens of
nodes) ad-hoc friend-to-friend (F2F) statically routed darknet
delay-tolerant networks for fire-and-forget secure reliable files, file
requests, Internet mail and commands transmission. All packets are
integrity checked, end-to-end encrypted (E2EE), explicitly authenticated
by known participants public keys. Onion encryption is applied to
relayed packets. Each node acts both as a client and server, can use
push and poll behaviour model.

Out-of-box offline sneakernet/floppynet, dead drops, sequential and
append-only CD-ROM/tape storages, air-gapped computers support. But
online TCP daemon with full-duplex resumable data transmission exists.

------------------------ >8 ------------------------

The main improvements for that release are:

* *Incompatible* configuration file format change: YAML is replaced
  with Hjson, due to its simplicity, without noticeable lack of
  either functionality or convenience.
* *Incompatible* plain packet format changes. Older versions are not
  supported. zlib compression is replaced with Zstandard, due to
  its speed and efficiency, despite library version is not mature
  enough.
* Ability to call remote nodes via pipe call of external command, not
  only through TCP.
* nncp-cfgnew generates configuration file with many comments.
  -nocomments option can be used for an old behaviour.
* Duplicate filenames have ".CTR" suffix, instead of "CTR", to avoid
  possible collisions with ".nncp.chunkCTR".
* Ability to override process umask through configuration file
  option.
* Files and directories are created with 666/777 permissions by
  default, allowing control with umask.
* Updated dependencies.
* Full usage of go modules for dependencies management
  ("go.cypherpunks.ru/nncp/v5" namespace is used).
* Forbid any later GNU GPL version autousage (project"s licence now
  is GNU GPLv3-only).

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NNCP's home page is: http://www.nncpgo.org/

Source code and its signature for that version can be found here:

    http://www.nncpgo.org/download/nncp-5.0.0.tar.xz (1099 KiB)
    http://www.nncpgo.org/download/nncp-5.0.0.tar.xz.sig

SHA256 hash: 3696D7EE B0783E91 87E5EEF4 EFC35235 10452353 7C51FA4C 9BD3CBEE A22678B3
GPG key ID: 0x2B25868E75A1A953 NNCP releases <releases@nncpgo.org>
Fingerprint: 92C2 F0AE FE73 208E 46BF  F3DE 2B25 868E 75A1 A953

Please send questions regarding the use of NNCP, bug reports and patches
to mailing list: https://lists.cypherpunks.ru/pipermail/nncp-devel/

-- 
Sergey Matveev (http://www.stargrave.org/)
OpenPGP: CF60 E89A 5923 1E76 E263  6422 AE1A 8109 E498 57EF