NeoStego
Copyright (c) 2026 Nick Haghiri

This product is a derivative work of OpenStego.
OpenStego is Copyright (c) Samir Vaidya (https://www.openstego.com).

NeoStego is free software, distributed under the terms of the GNU General
Public License, version 2 (see the LICENSE file). It retains the license of
the upstream OpenStego project. Files that originate from OpenStego carry the
original copyright notice; files modified for this fork additionally carry a
"Modifications copyright (c) 2026 Nick Haghiri" notice. Files created for this
fork carry only the NeoStego copyright. A summary of the changes made in this
fork is in CHANGELOG.md.

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Third-party code and dependencies
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Peter Meerwald
  The legacy spread-spectrum DWT watermarking plugins (Dugad, Kim, Xie) are
  based on code from his thesis on wavelet-domain watermarking
  (University of Salzburg, 2001).

DDE Lab, Binghamton University (Jessica Fridrich et al.)
  The content-adaptive (HILL+STC) and SI-UNIWARD plugins, and the steganalysis
  benchmark harnesses, implement methods introduced in research published by
  the DDE Lab and collaborators. See the "Acknowledgement" section of README.md
  for full citations. The DDE Lab's own reference code is released by them for
  research and non-profit use and is not included in this repository.

Paranoia Works -- Secret Space Encryptor (SSE), https://paranoiaworks.mobi
  The F5 plugin's algorithm core and PRNG -- the files under
  com/openstego/desktop/plugin/f5/ (F5Embed, F5Extract, F5Permutation) and
  com/openstego/desktop/plugin/f5/crypto/ (F5Random and the Digest interfaces)
  -- are lifted, near-verbatim, from SSE's com.paranoiaworks.steganography tree,
  which SSE licenses under the MIT License (the SSE project's LICENSE lists that
  tree as "BSD-2 + MIT"; the individual files carry an SPDX MIT identifier,
  which we preserve). The F5 algorithm itself is due to Andreas Westfeld, "F5 -
  A Steganographic Algorithm" (2001). Only the file names/packages and the
  coefficient-order handling were adapted for NeoStego; the per-file SPDX
  headers are retained unchanged.

  The MIT License text covering those files:

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
    IN THE SOFTWARE.

Joubin Mohammad Houshyar
  The Blake2b digest used by the F5 PRNG
  (com/openstego/desktop/plugin/f5/crypto/Blake2bHash.java) is his public-domain
  (CC0 1.0) Java BLAKE2B implementation; the original author/CC0 dedication
  header is retained in the file.

NeoStego links against the following libraries at build/run time. Each is the
property of its respective authors and is used under its own license:

  com.formdev:flatlaf, flatlaf-extras .......... Apache License 2.0
  info.picocli:picocli ......................... Apache License 2.0
  com.twelvemonkeys.imageio:imageio-webp ....... BSD 3-Clause License
  AndroidX / Jetpack Compose ................... Apache License 2.0
  org.jetbrains.kotlinx:kotlinx-coroutines ..... Apache License 2.0

Test-only dependencies (not distributed): JUnit (EPL 2.0), Mockito (MIT).