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fix unused variable warning and other fixes

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Signed-off-by: Kusumit Ghoderao <Kusumit.Ghoderao@silabs.com>
This commit is contained in:
Kusumit Ghoderao 2023-12-06 16:20:04 +05:30
parent 911eafda31
commit d3f70d321a
2 changed files with 9 additions and 4 deletions
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2
ChangeLog.d/fix_kdf_correct_initial_capacity.txt → ChangeLog.d/fix_kdf_incorrect_initial_capacity.txt
View file

@ -1,3 +1,3 @@
Bugfix
* Correct initial capacities for key derivation algorithms:TLS12_PRF,
* Correct initial capacities for key derivation algorithms:TLS12_PRF,
TLS12_PSK_TO_MS, PBKDF2-HMAC, PBKDF2-CMAC

11
library/psa_crypto.c
View file

@ -6076,9 +6076,10 @@ static psa_status_t psa_key_derivation_set_maximum_capacity(
#if defined(PSA_WANT_ALG_PBKDF2_AES_CMAC_PRF_128)
if (kdf_alg == PSA_ALG_PBKDF2_AES_CMAC_PRF_128) {
#if (SIZE_MAX > UINT32_MAX)
operation->capacity = UINT32_MAX * PSA_MAC_LENGTH(PSA_KEY_TYPE_AES,
128U,
PSA_ALG_CMAC);
operation->capacity = UINT32_MAX * (size_t)PSA_MAC_LENGTH(
PSA_KEY_TYPE_AES,
128U,
PSA_ALG_CMAC);
#else
operation->capacity = SIZE_MAX;
#endif
@ -6090,6 +6091,9 @@ static psa_status_t psa_key_derivation_set_maximum_capacity(
* invalid or meaningless but it does not affect this function */
psa_algorithm_t hash_alg = PSA_ALG_GET_HASH(kdf_alg);
size_t hash_size = PSA_HASH_LENGTH(hash_alg);
if (hash_size == 0) {
return PSA_ERROR_NOT_SUPPORTED;
}
/* Make sure that hash_alg is a supported hash algorithm. Otherwise
* we might fail later, which is somewhat unfriendly and potentially
@ -6138,6 +6142,7 @@ static psa_status_t psa_key_derivation_set_maximum_capacity(
} else
#endif /* PSA_WANT_ALG_PBKDF2_HMAC */
{
(void) hash_size;
status = PSA_ERROR_NOT_SUPPORTED;
}
return status;