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Fix snprintf call to assume less about integral type sizes

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The code only worked if psa_key_id_t (formerly psa_key_slot_t)
promoted to int and every value fit in int. Now the code only assumes
that psa_key_id_t is less wide than unsigned long, which is the case
since psa_key_id_t is a 32-bit type in our implementation.
This commit is contained in:
Gilles Peskine
2018-12-03 16:48:14 +01:00
parent 8d4919bc6a
commit a23eafce3a
1 changed files with 2 additions and 1 deletions
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3
library/psa_crypto_storage_file.c
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@ -53,7 +53,8 @@ static void key_id_to_location( const psa_key_id_t key,
size_t location_size ) size_t location_size )
{ {
mbedtls_snprintf( location, location_size, mbedtls_snprintf( location, location_size,
CRYPTO_STORAGE_FILE_LOCATION "psa_key_slot_%d", key ); CRYPTO_STORAGE_FILE_LOCATION "psa_key_slot_%lu",
(unsigned long) key );
} }
psa_status_t psa_crypto_storage_load( const psa_key_id_t key, uint8_t *data, psa_status_t psa_crypto_storage_load( const psa_key_id_t key, uint8_t *data,