ZedSecure — third-party notices
===============================

Country flag SVGs
-----------------
Source: flag-icons — https://github.com/lipis/flag-icons
License: MIT

The flag assets in `app/src/main/assets/flags/` are taken from the flag-icons
project (4x3 set). They are used unmodified.

    MIT License

    Copyright (c) 2013 Panayiotis Lipiridis

    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.

Xray-core
---------
Source: https://github.com/XTLS/Xray-core
License: MPL-2.0

hev-socks5-tunnel
-----------------
Source: https://github.com/heiher/hev-socks5-tunnel
License: MIT

zeptun
------
Source: https://github.com/Noisemux/zeptun
License: MIT (Copyright (c) 2026 Noisemux)

The TUN engine on Android and on the Windows and macOS desktop builds, taken unmodified from the
project's own release.

Wintun
------
Source: https://www.wintun.net
License: Wintun Prebuilt Binaries License (WireGuard LLC)

`wintun.dll` ships unmodified next to `zeptun.exe` in the Windows build, which uses it only through
the API in `wintun.h`. The license text ships beside it as `wintun-LICENSE.txt`.

SNI-Spoofing-Go
---------------
Source: https://github.com/aleskxyz/SNI-Spoofing-Go
Commit: f60734498c5dcdfd85705f4a682af5871d01895c (built unmodified)
License: GPL-3.0

Shipped as `libsnispoof.so` in `app/src/main/jniLibs/<abi>/`: a standalone executable the app runs
as a separate root process (`su -c`) and talks to only over a local TCP port and its command line.
It is not linked into the app. Built with
`GOOS=android CGO_ENABLED=1 go build -trimpath -buildmode=pie -ldflags="-s -w"` against the NDK
clang for each ABI, with 16 KB page alignment. The corresponding source is the commit above; the
full license text is in that repository's LICENSE file.

Hidden space sim
----------------
The easter egg in `ui/easteregg/` is an original implementation, written for this app, of the
game design of "Landroid" — the space exploration sim that has shipped as the Android platform
easter egg since Android 14 (`frameworks/base/packages/EasterEgg`, Apache-2.0). The flight-stick
control scheme, the Newtonian drift with a suspended-gravity launch window, the attitude-based
landing criterion, the autopilot's chase/approach/land strategies and the phosphor-console
telemetry are all taken from its design. No AOSP source is reproduced here.

sing-box
--------
Source: https://github.com/SagerNet/sing-box
License: GPL-3.0-or-later

sing-openvpn
------------
Source: https://github.com/SagerNet/sing-openvpn
License: GPL-3.0-or-later
Our patched fork: https://github.com/CluvexStudio/sing-openvpn (branch `zedsecure`)

AndroidLibXrayLite
------------------
Source: https://github.com/2dust/AndroidLibXrayLite
License: LGPL-3.0
Our patched fork: https://github.com/CluvexStudio/AndroidLibXrayLite (branch `zedsecure`)
It also carries `zeddns`, the DNS-tunnel client written for this app.

Xray-core patches
-----------------
Our patched fork: https://github.com/CluvexStudio/Xray-core (branch `zedsecure`)

Psiphon
-------
Source: https://github.com/Psiphon-Labs/psiphon-tunnel-core
License: GPL-3.0

Tor, obfs4proxy, Snowflake
--------------------------
Source: https://gitlab.torproject.org/tpo/core/tor and the anti-censorship projects
License: BSD-3-Clause
The Android tor is built from the 0.4.9.13 release with the fake SNI changes from
Gedsh's tor branch for InviZible Pro (https://gitlab.torproject.org/Gedsh/tor, prod-0.4.9),
kept as tools/tor-fake-sni.patch. The desktop builds use the official Tor Expert Bundle.

dnstt
-----
Source: https://www.bamsoftware.com/software/dnstt/ — David Fifield
License: public domain (CC0 1.0)
The DNS tunnel speaks the dnstt wire format; the engine below is a fork of it.

VayDNS
------
Source: https://github.com/anonvector/vaydns (module path github.com/net2share/vaydns)
License: CC0 1.0 Universal
A public-domain fork of dnstt. It is the engine behind both DNS-tunnel modes in
this app, driven by our own `zeddns` package.

SlipNet
-------
Source: https://github.com/anonvector/SlipNet — anonvector

Versions before 3.0.9 included SlipNet's dnstt fork (AGPL-3.0), noizdns, and
vaydns-mobile in the core, including SlipNet's TCP transport. Since 3.0.9, the
core uses zeddns, which has the same features with its own code. These features
come from SlipNet: DNS over plain TCP, the fan-out and round-robin resolver
modes with spread count, the DNS pool, the global resolver override and
prevent-DNS-fallback settings, and the design and text of the DNS and SSH settings.

MasterDNS
---------
Source: https://github.com/masterking32/MasterDnsVPN — Amin Mahmoudi
License: MIT

AmneziaWG
---------
Source: https://github.com/amnezia-vpn/amneziawg-go (a fork of WireGuard-go)
License: MIT

OpenConnect
-----------
Source: https://gitlab.com/openconnect/openconnect
License: LGPL-2.1
`app/src/main/jniLibs/<abi>/libopenconnect.so` is a build of our patched fork.
Ask us for that source and we will provide it, as LGPL-2.1 section 6 requires.
The Windows desktop build ships `openconnect.exe` built unmodified from the official 9.21 release with
MinGW, the GnuTLS, nettle, gmp, libxml2 and zlib DLLs it loads (each under its own licence, LGPL or more permissive), the
Wintun driver DLL (Wintun Prebuilt Binaries License) and `vpnc-script-win.js` from
https://gitlab.com/openconnect/vpnc-scripts (GPL-2.0-or-later), all unmodified and run as a
separate process.

KCP, smux, uTLS
---------------
Sources: github.com/xtaci/kcp-go, github.com/xtaci/smux,
         github.com/refraction-networking/utls
Licenses: MIT, MIT, BSD-3-Clause

JSch, Bouncy Castle, ZXing
--------------------------
Licenses: BSD-3-Clause, MIT, Apache-2.0

Compose Native Tray
-------------------
Source: https://github.com/kdroidFilter/ComposeNativeTray
License: MIT
The desktop tray icon on Linux.

Fonts
-----
Inter — SIL Open Font License 1.1 — https://github.com/rsms/inter
Estedad — SIL Open Font License 1.1 — https://github.com/aminabedi68/Estedad