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The Cryptolens Client API for C++ is licensed under the 2-Clause BSD License given below. The client API consists of the files in the examples/, include/, src/ and vsprojects/ directories.

Copyright (c) 2019, Cryptolens AB
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.

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.

Dependencies

The client API depends on other libraries for it to function correctly.

Currently, all versions and configurations are set up to use the base64 implementation found in third_party/base64_OpenBSD/. This implementation is licensed under a ISC license as well as something similar to a 3-Clause BSD license, for more details, see the files in the directory.

In the master branch on Github we have for conveniance included several other dependencies in the third_party/ directory. Which of these are used depends on how the basic_Cryptolens or basic_SKM class is set up, as well as how you set up your build environment.

The following sections cover which dependencies from third_party/ are included by default for the different api versions.

Core dependencies

This section details the dependencies which are used independently of which template arguments are provided to the basic_Cryptolens or basic_SKM class.

More precisly, the following dependencies are included when using the cryptolens_io::v20180502 namespace, or when using the cryptolens_io::v20190401 namespace with Configuration_Unix, Configuration_Unix_IgnoreExpires, Configuration_Windows or Configuration_Windows_IgnoreExpires as the Configuration template argument to basic_Cryptolens class.

  • ArduinoJson 5 from the third_party/ArduinoJson directory.
  • optional lite from the third_party/optional-lite is used when compiling against C++-14 or below.

Configuration dependent dependencies

When using Configuration_Windows, Configuration_Windows_IgnoreExpires or RequestHandler_WinHTTP the default build configurations link against the code in third_party/curl. This code consists of a single, very simple function from the cURL library. It is unclear to us if this function is complex enough to be covered by copyright.