# Third-party notices

DragonTCP Lite VPN includes portions of the Android userspace TCP/IP stack from
**FreeProxy** by xVanTuring. The upstream project is licensed under the Apache
License, Version 2.0.

Included/adapted upstream areas:

- `android/src/tech/xvanturing/freeproxy/vpn/TunnelEngine.kt`
- `android/src/tech/xvanturing/freeproxy/vpn/TcpSession.kt`
- `android/src/tech/xvanturing/freeproxy/vpn/UdpSession.kt`
- `android/src/tech/xvanturing/freeproxy/vpn/TunWriter.kt`
- `android/src/tech/xvanturing/freeproxy/vpn/net/*`
- the `SocketProtector` interface

DragonTCP-specific modifications are marked in modified source files. The full
Apache 2.0 license is included at `licenses/FreeProxy-APACHE-2.0.txt`.

The rest of the DragonTCP-specific glue, UI, Go transport, and server code in
this bundle is provided as part of this generated project.

## golang.org/x/crypto

The Go core uses **golang.org/x/crypto** for the SSH protocol implementation and
bcrypt password hashing. It is distributed under the Go project's BSD-style
license. The license text is included at
`licenses/golang-x-crypto-BSD-3-Clause.txt`.