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Add input cost function for pbkdf2

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Signed-off-by: Kusumit Ghoderao <Kusumit.Ghoderao@silabs.com>
This commit is contained in:
Kusumit Ghoderao 2023-05-03 12:14:03 +05:30
parent d132cacb38
commit 944bba1e30
1 changed files with 35 additions and 0 deletions
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35
library/psa_crypto.c
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@ -6384,6 +6384,35 @@ static psa_status_t psa_tls12_ecjpake_to_pms_input(
return PSA_SUCCESS;
}
#endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */
#if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC)
static psa_status_t psa_pbkdf2_set_input_cost(
psa_pbkdf2_key_derivation_t *pbkdf2,
psa_key_derivation_step_t step,
uint64_t data)
{
if (step != PSA_KEY_DERIVATION_INPUT_COST) {
return PSA_ERROR_INVALID_ARGUMENT;
}
if (pbkdf2->state != PSA_PBKDF2_STATE_INIT) {
return PSA_ERROR_BAD_STATE;
}
#if UINT_MAX > 0xFFFFFFFF
if (data > 0xFFFFFFFF) {
return PSA_ERROR_INVALID_ARGUMENT;
}
#endif
if (data == 0) {
return PSA_ERROR_INVALID_ARGUMENT;
}
pbkdf2->input_cost = data;
pbkdf2->state = PSA_PBKDF2_STATE_INPUT_COST_SET;
return PSA_SUCCESS;
}
#endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */
/** Check whether the given key type is acceptable for the given
* input step of a key derivation.
*
@ -6491,6 +6520,12 @@ static psa_status_t psa_key_derivation_input_integer_internal(
psa_status_t status;
psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation);
#if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC)
if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) {
status = psa_pbkdf2_set_input_cost(
&operation->ctx.pbkdf2, step, value);
} else
#endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */
{
(void) step;
(void) value;