| commit | fec306452b80365575e66543f328f1ec0946cdd6 | [log] [tgz] |
|---|---|---|
| author | Gilles Peskine <Gilles.Peskine@arm.com> | Thu Oct 10 20:30:54 2019 +0200 |
| committer | Gilles Peskine <Gilles.Peskine@arm.com> | Fri Oct 11 18:21:08 2019 +0200 |
| tree | f8d5e7e26721fa26a1dec3c569dd3a0096b9c860 | |
| parent | 3cdb3da3a0c1631e14434a219dfa787513a915a7 [diff] |
Add a reference configuration without any asymmetric cryptography Add a reference configuration with most symmetric cryptographic algorithms enabled, but without any asymmetric cryptography. This checks that we don't have spurious unexpected dependencies on asymmetric-only modules such as bignum. Keep HAVE_ASM disabled because it's platform-specific. Keep HAVEGE disabled because it's untested and not recommended. Keep MEMORY_BUFFER_ALLOC out because it isn't related to cryptography at all and it makes memory sanitizers ineffective. Keep THREADING disabled because it requires special build options.
The Mbed cryptography library is a reference implementation of the cryptography interface of the Arm Platform Security Architecture (PSA). This is a preview release of Mbed Crypto, provided for evaluation purposes only.
Mbed Crypto is distributed under the Apache License, version 2.0. See the LICENSE file for the full text of the license.
Arm's Platform Security Architecture (PSA) is a holistic set of threat models, security analyses, hardware and firmware architecture specifications, and an open source firmware reference implementation. PSA provides a recipe, based on industry best practice, that allows security to be consistently designed in, at both a hardware and firmware level.
The PSA cryptography API provides access to a set of cryptographic primitives. It has a dual purpose. First, it can be used in a PSA-compliant platform to build services, such as secure boot, secure storage and secure communication. Second, it can also be used independently of other PSA components on any platform.
The design goals of the PSA cryptography API include:
Mbed Crypto is a reference implementation of the PSA cryptography API. It is written in portable C.
The Mbed Crypto library is a reference implementation of the PSA cryptography API. Please refer to the PSA Cryptography API documents for an overview of the library's interfaces and a detailed description of the types, macros and functions that it provides.
There are currently a few deviations where the library does not yet implement the latest version of the specification. Please refer to the compliance issues on Github for an up-to-date list.
You can read the complete PSA cryptography API specification as a PDF document. The API reference is also available in HTML format.
To generate a local copy of the library documentation in HTML format:
make apidoc.apidoc/index.html or apidoc/modules.html.You need the following tools to build the library with the provided makefiles:
If you have a C compiler, such as GCC or Clang, just run make in the top-level directory to build the library, a set of unit tests and some sample programs.
To select a different compiler, set the CC variable to the name or path of the compiler and linker (default: cc), and set AR to a compatible archiver (default: ar). For example:
make CC=arm-linux-gnueabi-gcc AR=arm-linux-gnueabi-ar
The provided makefiles pass options to the compiler that assume a GCC-like command-line syntax. To use a different compiler, you may need to pass different values for CFLAGS, WARNINGS_CFLAGS and LDFLAGS.
To run the unit tests on the host machine, run make test from the top-level directory. If you are cross-compiling, copy the test executable from the tests directory to the target machine.
Mbed Crypto supports being built as a subproject of Mbed TLS. Mbed TLS can use Mbed Crypto for its cryptography implementation by using Mbed Crypto as a subproject.
From the Mbed TLS project repository, CMake can be invoked as follows to build Mbed TLS using Mbed Crypto's libmbedcrypto.
mkdir cmake cd cmake cmake .. -DUSE_CRYPTO_SUBMODULE=1 make -j make test
When building Mbed Crypto as a subproject of Mbed TLS, the Mbed TLS configuration file (config.h) is used, and not the Mbed Crypto configuration file.
The programs/ subdirectory contains sample programs that use the library. Please note that the goal of these sample programs is to demonstrate specific features of the library, and the code may need to be adapted to build a real-world application.
Future releases of this library will include:
Arm welcomes feedback on the design of the API. If you think something could be improved, please open an issue on our Github repository. Alternatively, if you prefer to provide your feedback privately, please email us at mbed-crypto@arm.com. All feedback received by email is treated confidentially.