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Add key import for psa_tls12_prf_input

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This commit is contained in:
Janos Follath 2019-06-13 14:26:34 +01:00
parent f08e2654ed
commit 8155054e28
1 changed files with 20 additions and 2 deletions
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22
library/psa_crypto.c
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@ -4790,18 +4790,36 @@ static psa_status_t psa_tls12_prf_set_seed( psa_tls12_prf_key_derivation_t *prf,
return( PSA_SUCCESS );
}
static psa_status_t psa_tls12_prf_set_key( psa_tls12_prf_key_derivation_t *prf,
psa_algorithm_t hash_alg,
const uint8_t *data,
size_t data_length )
{
psa_status_t status;
if( prf->state != TLS12_PRF_STATE_SEED_SET )
return( PSA_ERROR_BAD_STATE );
status = psa_hmac_setup_internal( &prf->hmac, data, data_length, hash_alg );
if( status != PSA_SUCCESS )
return( status );
prf->state = TLS12_PRF_STATE_KEY_SET;
return( PSA_SUCCESS );
}
static psa_status_t psa_tls12_prf_input( psa_tls12_prf_key_derivation_t *prf,
psa_algorithm_t hash_alg,
psa_key_derivation_step_t step,
const uint8_t *data,
size_t data_length )
{
(void) hash_alg;
switch( step )
{
case PSA_KEY_DERIVATION_INPUT_SEED:
return( psa_tls12_prf_set_seed( prf, data, data_length ) );
case PSA_KEY_DERIVATION_INPUT_SECRET:
return( psa_tls12_prf_set_key( prf, hash_alg, data, data_length ) );
default:
return( PSA_ERROR_INVALID_ARGUMENT );
}