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<p class="maincopyright">Copyright © 2021 Threema GmbH.<br/>
    All rights reserved.</p>

<p>This product contains artwork and code from the following rights holders:</p>


<h2>Android Fast Scroll</h2>

<p>Copyright 2019 Google LLC</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Android Gesture Detectors Framework</h2>

<p>Copyright (c) 2013, Almer Thie</p>

<p>All rights reserved.</p>

<p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:</p>

<ul>
    <li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li>
    <li>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.</li>
</ul>

<p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.</p>


<h2>Android Image Cropper</h2>

<p>Copyright 2016 Arthur Teplitzki, 2013 Edmodo, Inc.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Android Video Kit</h2>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>android-gif-drawable</h2>

<p>Copyright (c) 2016-2017 Karol Wrótniak, Droids on Roids</p>

<p>Licensed under the MIT License (copy below)</p>


<h2>Base32</h2>

<p>Copyright © 2010, Data Base Architects, Inc. All rights reserved.</p>

<p>Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:</p>

<ul>
    <li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li>
    <li>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.</li>
    <li>Neither the names of Kalinda Software, DBA Software, Data Base Architects, Itemscript nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.</li>
</ul>

<p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.</p>


<h2>Commons IO</h2>

<p>Copyright (c) 2016 The Apache Software Foundation. All rights reserved.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>curve25519-donna</h2>

<p>Copyright 2008, Google Inc. All rights reserved.</p>

<p>Redistribution and use in source and binary forms, with or without modification, are permitted
    provided that the following conditions are met:</p>

<ul>
    <li>Redistributions of source code must retain the above copyright notice, this list of
        conditions and the following disclaimer.
    </li>
    <li>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.
    </li>
    <li>Neither the name of Google Inc. nor the names of its contributors may be used to endorse or
        promote products derived from this software without specific prior written permission.
    </li>
</ul>

<p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER OR
    CONTRIBUTORS 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.</p>

<p>curve25519-donna: Curve25519 elliptic curve, public key function</p>

<p>http://code.google.com/p/curve25519-donna/</p>

<p>Adam Langley agl@imperialviolet.org</p>

<p>Derived from public domain C code by Daniel J. Bernstein djb@cr.yp.to</p>

<p>More information about curve25519 can be found here http://cr.yp.to/ecdh.html</p>

<p>djb's sample implementation of curve25519 is written in a special assembly language called qhasm
    and uses the floating point registers.</p>

<p>This is, almost, a clean room reimplementation from the curve25519 paper. It uses many of the
    tricks described therein. Only the crecip function is taken from the sample implementation.</p>


<h2>Emoji art supplied by <a href="http://emojione.com">EmojiOne</a></h2>

<p>Licensed under Creative Commons License (CC-BY 4.0).</p>


<h2>ExoPlayer</h2>

<p>Copyright (c) 2017 Google, Inc.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Jackson JSON-processor</h2>

<p>Copyright (c) 2007-2017 Tatu Saloranta, tatu.saloranta@iki.fi</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Java implementation of SCrypt</h2>

<p>Copyright (c) 2013 Will Glozer</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>jnacl</h2>

<p>Copyright (c) 2011, Neil Alexander T. All rights reserved.</p>

<p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:</p>

<ul>
    <li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li>
    <li>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.</li>
</ul>

<p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.</p>


<h2>libphonenumber</h2>

<p>Copyright (c) 2011-2017 The Libphonenumber Authors</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Mapbox Maps SDK for Android</h2>

<p>Copyright 2014-2020 Mapbox.</p>

<p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:</p>

<p>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</p>

<p>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.</p>

<p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.</p>


<h2>MessagePack for Java</h2>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>MotionViews-Android</h2>

<p>Copyright (c) 2016 UPTech</p>

<p>Licensed under the MIT License (copy below)</p>


<h2>nv-websocket-client</h2>

<p>Copyright (C) 2015-2016 Neo Visionaries Inc.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>OpenCSV</h2>

<p>Copyright (c) 2016 The OpenCSV Contributors. All rights reserved.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Preference eXtended</h2>

<p>Copyright (c) takisoft</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>saltyrtc-client-java</h2>

<p>Copyright (c) 2016-2018 Threema GmbH</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>saltyrtc-task-webrtc-java</h2>

<p>Copyright (c) 2016-2018 Threema GmbH</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>scrypt</h2>

<p>Copyright 2009 Colin Percival</p>
<p>All rights reserved.</p>

<p>Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:</p>

<ol>
    <li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li>
    <li>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.</li>
</ol>

<p>THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.</p>


<h2>SLF4j</h2>

<p>Copyright (c) 2004-2017 QOS.ch All rights reserved.</p>

<p>Licensed under the MIT License (copy below)</p>


<h2>SQLCipher</h2>

<p>Copyright (c) 2016 Zetetic LLC<br />
All rights reserved.</p>

<p>Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:</p>

<ul>
    <li>Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.</li>
    <li>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.</li>
    <li>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.</li>
</ul>

<p>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.</p>


<h2>StepPagerStrip</h2>

<p>Copyright 2012 Roman Nurik</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Subsampling Scale Image View</h2>

<p>Copyright (c) 2015 David Morrissey</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>TapTargetView</h2>

<p>Copyright (c) 2016 Keepsafe Software Inc.</p>

<p>Licensed under the Apache License, Version 2.0 (copy below)</p>


<h2>The Android Open Source Project</h2>

<p>Copyright (c) 2019 Google Inc.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>TrustKit-Android</h2>

<p>Copyright (c) 2016 Data Theorem, Inc.</p>

<p>Licensed under the MIT License (copy below)</p>


<h2>WebRTC</h2>

<p>Copyright (c) 2011, The WebRTC project authors. All rights reserved.</p>

<p>Redistribution and use in source and binary forms, with or without modification, are permitted
provided that the following conditions are met:</p>

<ul>
    <li>Redistributions of source code must retain the above copyright notice, this list of
    conditions and the following disclaimer.</li>
    <li>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.</li>
    <li>Neither the name of Google nor the names of its contributors may be used to endorse or
    promote products derived from this software without specific prior written permission.</li>
</ul>

<p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR
CONTRIBUTORS 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.</p>


<h2>Zip4j</h2>

<p>Copyright (c) 2013 Srikanth Reddy Lingala. All rights reserved.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>ZXing</h2>

<p>Copyright (c) 2009-2012 ZXing authors. All rights reserved.</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>ZoomableTextureView</h2>

<p>Copyright (c) 2018 Volodya Polohalo</p>

<p>Licensed under the Apache License, version 2.0 (copy below).</p>


<h2>Apache License<br/>Version 2.0, January 2004</h2>
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    obligations and/or rights consistent with this License. However, in accepting such
    obligations, You may act only on Your own behalf and on Your sole responsibility,
    not on behalf of any other Contributor, and only if You agree to indemnify, defend,
    and hold each Contributor harmless for any liability incurred by, or claims
    asserted against, such Contributor by reason of your accepting any such warranty
    or additional liability.</p>

<p>END OF TERMS AND CONDITIONS</p>


<h2>MIT License</h2>
<a href="https://opensource.org/licenses/MIT">https://opensource.org/licenses/MIT</a>

<p>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.
</p>

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