Open-source licenses
Nuntaro includes open-source software. This page provides the notices for the primary libraries used by end-to-end encrypted messaging.
Encrypted-messaging component inventory
| Component | Version | License used by Nuntaro |
|---|---|---|
| Matrix Rust SDK crypto FFI | 0.17.0, commit cf099deb272f2ef44a0b8b8f7afd96004c3a822a | Apache-2.0 |
| matrix-sdk-crypto | 0.17.0 | Apache-2.0 |
| vodozemac | 0.10.0 | Apache-2.0 |
| Rust hpke | 0.14.0 | Apache-2.0 election from MIT OR Apache-2.0 |
| UniFFI | 0.31.0 | MPL-2.0 |
| Java Native Access (JNA) | 5.19.1 | Apache-2.0 election from LGPL-2.1-or-later OR Apache-2.0 |
Bouncy Castle bcprov-jdk18on | 1.84 | Bouncy Castle License, MIT/X-style |
| SQLCipher for Android, Community Edition | 4.17.0 | BSD-3-Clause-style SQLCipher Community license |
libsignal is not included in Nuntaro source or builds. It is prohibited by Nuntaro dependency policy and is not part of this inventory.
Apache License 2.0 components
Matrix Rust SDK crypto FFI, matrix-sdk-crypto, vodozemac, Rust hpke, and JNA are distributed by Nuntaro under Apache License 2.0. Nuntaro elects Apache-2.0 where an upstream project offers a choice.
- Complete Apache License 2.0 text included with Nuntaro (canonical source)
- Matrix Rust SDK source
- vodozemac source
- Rust hpke source
- JNA source and notices
Copyright, patent, trademark, attribution, and NOTICE statements contained in those source distributions remain the property of their respective owners. The Apache license provides the software without warranties or conditions and limits contributor liability.
UniFFI 0.31.0 — Mozilla Public License 2.0
Nuntaro uses UniFFI to generate Swift and Kotlin bindings. The reviewed dependency is the unmodified crates.io release; Nuntaro has not vendored or modified upstream UniFFI source files.
MPL-2.0 applies at file level to covered UniFFI code. Separate Nuntaro files are not placed under MPL-2.0 merely because they are combined with UniFFI in a larger work. MPL-covered source and any covered-file modifications must remain available under MPL-2.0.
Bouncy Castle 1.84
Copyright (c) 2000-2023 The Legion of the Bouncy Castle Inc. (https://www.bouncycastle.org)
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.
SQLCipher for Android 4.17.0 — Community Edition
Copyright (c) 2008-2023, ZETETIC LLC. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- Neither the name of the ZETETIC LLC nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY ZETETIC LLC ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ZETETIC LLC BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- SQLCipher for Android 4.17.0 source
- SQLCipher Community Edition license information
- SQLite public-domain notice
- LibTomCrypt public-domain notice
The Maven Central coordinate used by Nuntaro is the Community Edition build. Nuntaro does not represent that SQLCipher or Zetetic endorses Nuntaro.
Platform cryptography
Nuntaro also uses Apple CryptoKit, Security and Keychain APIs, and Android Keystore/JCA APIs. These are platform APIs supplied under the applicable Apple and Google SDK and store agreements, rather than third-party libraries vendored by Nuntaro.
This page covers the approved primary E2EE inventory. Before a production release, Nuntaro will reconcile these notices against the complete transitive software bill of materials from the exact iOS archive and Android App Bundle and add any additional required notices.