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Backward compatibility: the key store with drivers

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Promise that we will try to keep backward compatibility with basic driver
usage, but not with more experimental aspects.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2022-06-20 18:50:09 +02:00
parent 9956efaf32
commit 4b873874a3
2 changed files with 9 additions and 2 deletions
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6
BRANCHES.md
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@ -78,6 +78,12 @@ Mbed TLS 3.x can also read keys written by Mbed TLS 2.25.0 through 2.28.x
LTS, but future major version upgrades (for example from 2.28.x/3.x to 4.y)
may require the use of an upgrade tool.
Note that this guarantee does not currently fully extend to drivers, which
are an experimental feature. We intend to maintain compatibility with the
basic use of drivers from Mbed TLS 2.28.0 onwards, even if driver APIs
change. However, for more experimental parts of the driver interface, such
as the use of driver state, we do not yet guarantee backward compatibility.
## Long-time support branches
For the LTS branches, additionally we try very hard to also maintain ABI

5
include/mbedtls/mbedtls_config.h
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@ -1184,8 +1184,9 @@
*
* Requires: MBEDTLS_PSA_CRYPTO_C
*
* \warning This interface is experimental and may change or be removed
* without notice.
* \warning This interface is experimental. We intend to maintain backward
* compatibility with application code that relies on drivers,
* but the driver interfaces may change without notice.
*/
//#define MBEDTLS_PSA_CRYPTO_DRIVERS