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Make psa_get_and_lock_X_with_policy threadsafe

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Between the call to psa_get_and_lock_key_slot and psa_unregister_read
we only read the contents of a slot which we are registered to read,
so no extra mutex taking is needed.

Signed-off-by: Ryan Everett <ryan.everett@arm.com>
This commit is contained in:
Ryan Everett 2024-01-31 13:40:05 +00:00
parent eb1722a2b9
commit fb792cad31
1 changed files with 2 additions and 2 deletions
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4
library/psa_crypto.c
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@ -936,7 +936,7 @@ static psa_status_t psa_get_and_lock_key_slot_with_policy(
error:
*p_slot = NULL;
psa_unregister_read(slot);
psa_unregister_read_under_mutex(slot);
return status;
}
@ -968,7 +968,7 @@ static psa_status_t psa_get_and_lock_transparent_key_slot_with_policy(
}
if (psa_key_lifetime_is_external((*p_slot)->attr.lifetime)) {
psa_unregister_read(*p_slot);
psa_unregister_read_under_mutex(*p_slot);
*p_slot = NULL;
return PSA_ERROR_NOT_SUPPORTED;
}