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Initialize key bits to max size + 1 in psa_import_key

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In psa_import_key, the key bits value was uninitialized before
calling the secure element driver import function. There is a
potential issue if the driver returns PSA_SUCCESS without setting
the key bits. This shouldn't happen, but shouldn't be discounted
either, so we initialize the key bits to an invalid issue.
This commit is contained in:
Darryl Green 2019-08-20 09:50:14 +01:00
parent 74c932e596
commit 0892d0fbbf
1 changed files with 3 additions and 1 deletions
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4
library/psa_crypto.c
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@ -1835,7 +1835,9 @@ psa_status_t psa_import_key( const psa_key_attributes_t *attributes,
if( driver != NULL )
{
const psa_drv_se_t *drv = psa_get_se_driver_methods( driver );
size_t bits;
/* The driver should set the number of key bits, however in
* case it doesn't, we initialize bits to an invalid value. */
size_t bits = PSA_MAX_KEY_BITS + 1;
if( drv->key_management == NULL ||
drv->key_management->p_import == NULL )
{