Prepare release 4.2.0

New optional features:
  - HSM support
  - Dilithium support

CHANGELOG.md

@@ -8,6 +8,12 @@ All notable changes to this project will be documented in this file.
 
 ## Fixed
 
+
+# Release 4.2.0
+## Changed
+
+## Fixed
+
 * CA Tests' SetUp was changed so that all the objects involved do not depend on time when
   construction of object is made. This led to problems where object of CA class had notBefore
   attribute set to greater value than CA's certificate's notBefore which should never happen.
@@ -31,11 +37,22 @@ All notable changes to this project will be documented in this file.
   This change just improves the error reporting.
 * Clang-Format has been applied to the existing code-base of MoCOCrW and a `.clang-format`
   file has been included to format the code of of future PRs.
-* A foundational PKCS#11 HSM interface, based OpenSSL's ENGINE API, has been introduced
-  to MoCOCrW. Currently, the following functionality is supported:
+* A foundational PKCS#11 HSM interface, based on OpenSSL's ENGINE API, has been introduced
+  to MoCOCrW. This functionality is disabled by default. See [README](README.md) to get more
+  information on how to enable it.
+  Currently, the following functionality is supported:
     - Loading Public Keys
     - Loading Private Keys
     - Generating EC and RSA keypairs
+* Post Quantum Cryptography support has been added.
+  [Dilithium](https://www.pq-crystals.org/dilithium/)
+  is used to offer signing and verification functionality. Please note that the API is
+  provisional as there is currently no OpenSSL support for Dilithium. This library intends to
+  switch to an OpenSSL implementation once available. As a consequence of this, the interfaces
+  around Dilithium are subject to future changes. We support dilithium for experimentation and
+  getting early hands-on experience but we discourage using it as it's not yet standardized.
+  This functionality is disabled by default. See [README](README.md) to get more
+  information on how to enable it.
 
 # Release 4.1.1
 

README.md

@@ -58,10 +58,46 @@ build/$ ctest . --output-on-failure
 
 The bci.config file is used by our internal validation environment, please just ignore it.
 
+### Build with dilithium support
+
+Dilithium is an **optional** feature provided by MoCOCrW.
+
+This feature depends on [reference implementation of the Dilithium signature scheme](https://github.com/pq-crystals/dilithium/)
+since OpenSSL still doesn't have a support for Dilithium. The following adaptations are necessary
+in order to successfully compile MoCOCrW with the Dilithium feature . 
+
+#### Dilithium Adaptions
+
+It is not possible to take the bare Dilithium implementation. The Dilithium implementation was
+adapted with the following PRs: [PR#1](https://github.com/pq-crystals/dilithium/pull/68)
+[PR#2](https://github.com/pq-crystals/dilithium/pull/69). These PRs need to be pulled and used
+to build and install libdilithium locally before trying to use it with MoCOCrW.
+
+Then, to use the Dilithium feature, replace the CMake invocation with:
+```
+build/$ cmake -DBUILD_TESTING=True -DDILITHIUM_ENABLED=ON ..
+```
+
+### Build with HSM support
+
+HSM support is an **optional** feature for MoCOCrW. This allows for loading and storing keys on HSM
+and using those keys in various cryptographic algorithms without having keys in memory. To build
+MoCOCrW with HSM support, a patched version of libp11 is necessary since upstream libp11 does not
+support key generation through OpenSSL's ENGINE API.
+
+[libp11 release 0.4.12](https://github.com/OpenSC/libp11/releases/tag/libp11-0.4.12) patched with
+[patch for key generation](https://github.com/bmwcarit/MoCOCrW/blob/openssl1.1/dockerfiles/feature-support/hsm-patches/0001-Introduce-generic-keypair-generation-interface-and-e.patch) is required for building MoCOCrW with
+HSM feature enabled. To build and install patched libp11, check out [how it's done](https://github.com/bmwcarit/MoCOCrW/blob/openssl1.1/dockerfiles/feature-support/Dockerfile#L31) in our CI or [official instructions by libp11](https://github.com/OpenSC/libp11/blob/master/INSTALL.md).
+
+Then, to use the HSM feature, replace the CMake invocation with:
+```
+build/$ cmake -DBUILD_TESTING=True -DHSM_ENABLED=ON ..
+```
+
 ## Installation / Usage / Packaging
 
-MoCOCrW is prepared to be installed or packaged into an SDK. It also provides a cmake
-exported target that you can use in your projects. A minimal example how to use this cmake
+MoCOCrW is prepared to be installed or packaged into an SDK. It also provides a CMake
+exported target that you can use in your projects. A minimal example how to use this CMake
 integration can be found in `tests/sdk`. This can also be used as an integration test if you
 want to ship MoCOCrW with an SDK.