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* [nncp-devel] [EN] NNCP 3.0 release announcement
@ 2018-02-18 16:49 Sergey Matveev
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From: Sergey Matveev @ 2018-02-18 16:49 UTC (permalink / raw)
  To: nncp-devel

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I am pleased to announce NNCP 3.0 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* plain packet format changes. Older versions are not
* Ability to queue remote command execution, by configuring exec
  option in configuration file and using nncp-exec command:

  * nncp-mail command is replaced with more flexible nncp-exec.
    Instead of "nncp-mail NODE RECIPIENT" you must use
    "nncp-exec NODE sendmail RECIPIENT".
  * sendmail configuration file option is replaced with exec.
    "sendmail: [...]" must be replaced with "exec: sendmail: [...]".

* Ability to override "via" configuration option for destination
  node via -via command line option for following commands:
  nncp-file, nncp-freq, nncp-exec.
* Chunked files, having size less than specified chunk size, will be
  sent as an ordinary single file.
* Exec commands are invoked with additional NNCP_NICE and NNCP_SELF
  environment variables.
* Files, that are sent as a reply to freq, have niceness level taken
  from the freq packet. You can set desired niceness during nncp-freq
  invocation using -replynice option.
* nncp-toss command can ignore specified packet types during processing:
  -nofile, -nofreq, -noexec, -notrns.
* nncp-file command uses FreqMinSize/FreqChunked conifiguration file
  options for -minsize/-chunked by default. You can turn this off by
  specifying zero value.

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

NNCP's home page is:
Also available as I2P service:

Source code and its signature for that version can be found here: (993 KiB)

SHA256 hash: 248B2257 2F576E79 A19672E9 B82EB649 18FC95A9 194408C0 67EA4DD3 0468286D
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:

Sergey Matveev (
OpenPGP: CF60 E89A 5923 1E76 E263  6422 AE1A 8109 E498 57EF

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2018-02-18 16:49 [nncp-devel] [EN] NNCP 3.0 release announcement Sergey Matveev