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Changelog entry noting the behavior change and storage format change

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
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Gilles Peskine 2020-05-10 00:51:22 +02:00
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ChangeLog.d/psa-lifetime-locations.txt Normal file
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Default behavior changes
* In the experimental PSA secure element interface, change the encoding of
key lifetimes to encode a persistence level and the location. Although C
prototypes do not effectively change, code calling
psa_register_se_driver() must be modified to pass the driver's location
instead of the keys' lifetime. If the library is upgraded on an existing
device, keys created with the old lifetime value will not be readable or
removable through Mbed TLS after the upgrade.