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The PSA implementation is production-quality

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This has been the case for a while, but we forgot to update the readme.

Don't prominently label it a "reference" implementation. That implies that
it's a complete implementation, but it isn't: we do not intend to implement
every mechanism that the PSA specification has an encoding for. That also
tends to imply that it's for demonstration purposes and not ready for
production, but Mbed TLS is intended to be used in production.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
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Gilles Peskine
2023-09-13 13:14:43 +02:00
parent c2b94d45d4
commit 263b6925a2
1 changed files with 2 additions and 5 deletions
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README.md
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@@ -1,9 +1,7 @@
README for Mbed TLS
===================
Mbed TLS is a C library that implements cryptographic primitives, X.509 certificate manipulation and the SSL/TLS and DTLS protocols. Its small code footprint makes it suitable for embedded systems.
Mbed TLS includes a reference implementation of the [PSA Cryptography API](#psa-cryptography-api). This is currently a preview for evaluation purposes only.
Mbed TLS is a C library that implements cryptographic primitives (including the [PSA Cryptography API](#psa-cryptography-api)), X.509 certificate manipulation and the SSL/TLS and DTLS protocols. Its small code footprint makes it suitable for embedded systems.
Configuration
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@@ -298,8 +296,7 @@ Arm welcomes feedback on the design of the API. If you think something could be
### PSA implementation in Mbed TLS
Mbed TLS includes a reference implementation of the PSA Cryptography API.
However, it does not aim to implement the whole specification; in particular it does not implement all the algorithms.
Mbed TLS includes an implementation of the PSA Cryptography API. It covers most, but not all algorithms.
The X.509 and TLS code can use PSA cryptography for most operations. To enable this support, activate the compilation option `MBEDTLS_USE_PSA_CRYPTO` in `mbedtls_config.h`. Note that TLS 1.3 uses PSA cryptography for most operations regardless of this option. See `docs/use-psa-crypto.md` for details.