License change

.uncrustify.cfg

@@ -4,19 +4,7 @@
 # to Mbed TLS.
 #
 # Copyright The Mbed TLS Contributors
-# SPDX-License-Identifier: Apache-2.0
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 
 
 # Wrap lines at 100 characters

3rdparty/p256-m/README.md

@@ -1,4 +1,4 @@
-The files within the `p256-m/` subdirectory originate from the [p256-m GitHub repository](https://github.com/mpg/p256-m), which is distributed under the Apache 2.0 license. They are authored by Manuel Pégourié-Gonnard. p256-m is a minimalistic implementation of ECDH and ECDSA on NIST P-256, especially suited to constrained 32-bit environments. Mbed TLS documentation for integrating drivers uses p256-m as an example of a software accelerator, and describes how it can be integrated alongside Mbed TLS. It should be noted that p256-m files in the Mbed TLS repo will not be updated regularly, so they may not have fixes and improvements present in the upstream project.
+The files within the `p256-m/` subdirectory originate from the [p256-m GitHub repository](https://github.com/mpg/p256-m). They are distributed here under a dual Apache-2.0 OR GPL-2.0-or-later license. They are authored by Manuel Pégourié-Gonnard. p256-m is a minimalistic implementation of ECDH and ECDSA on NIST P-256, especially suited to constrained 32-bit environments. Mbed TLS documentation for integrating drivers uses p256-m as an example of a software accelerator, and describes how it can be integrated alongside Mbed TLS. It should be noted that p256-m files in the Mbed TLS repo will not be updated regularly, so they may not have fixes and improvements present in the upstream project.
 
-The files `p256-m.c` and `.h`, along with the license, have been taken from the `p256-m` repository.
+The files `p256-m.c`, `p256-m.h` and `README.md` have been taken from the `p256-m` repository.
 It should be noted that p256-m deliberately does not supply its own cryptographically secure RNG function. As a result, the PSA RNG is used, with `p256_generate_random()` wrapping `psa_generate_random()`.

3rdparty/p256-m/p256-m/p256-m.c

@@ -3,7 +3,7 @@
  *
  * Copyright The Mbed TLS Contributors
  * Author: Manuel Pégourié-Gonnard.
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "p256-m.h"

3rdparty/p256-m/p256-m/p256-m.h

@@ -3,7 +3,7 @@
  *
  * Copyright The Mbed TLS Contributors
  * Author: Manuel Pégourié-Gonnard.
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef P256_M_H
 #define P256_M_H

3rdparty/p256-m/p256-m_driver_entrypoints.c

@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "mbedtls/platform.h"

3rdparty/p256-m/p256-m_driver_entrypoints.h

@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef P256M_DRIVER_ENTRYPOINTS_H

CONTRIBUTING.md

@@ -84,11 +84,11 @@ Mbed TLS is well documented, but if you think documentation is needed, speak out
 License and Copyright
 ---------------------
 
-Unless specifically indicated otherwise in a file, Mbed TLS files are provided under the [Apache-2.0](https://spdx.org/licenses/Apache-2.0.html) license. See the [LICENSE](LICENSE) file for the full text of this license.
+Unless specifically indicated otherwise in a file, Mbed TLS files are provided under a dual [Apache-2.0](https://spdx.org/licenses/Apache-2.0.html) OR [GPL-2.0-or-later](https://spdx.org/licenses/GPL-2.0-or-later.html) license. See the [LICENSE](LICENSE) file for the full text of these licenses. This means that users may choose which of these licenses they take the code under.
 
-Contributors must accept that their contributions are made under both the Apache-2.0 AND [GPL-2.0-or-later](https://spdx.org/licenses/GPL-2.0-or-later.html) licenses. This enables LTS (Long Term Support) branches of the software to be provided under either the Apache-2.0 or GPL-2.0-or-later licenses.
+Contributors must accept that their contributions are made under both the Apache-2.0 AND [GPL-2.0-or-later](https://spdx.org/licenses/GPL-2.0-or-later.html) licenses.
 
-All new files should include the [Apache-2.0](https://spdx.org/licenses/Apache-2.0.html) standard license header where possible.
+All new files should include the standard SPDX license identifier where possible, i.e. "SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later".
 
 The copyright on contributions is retained by the original authors of the code. Where possible for new files, this should be noted in a comment at the top of the file in the form: "Copyright The Mbed TLS Contributors".
 

ChangeLog.d/license.txt

@@ -0,0 +1,3 @@
+Changes
+   *  Mbed TLS is now released under a dual Apache-2.0 OR GPL-2.0-or-later
+      license. Users may choose which license they take the code under.