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Add seed input for psa_tls12_prf_input

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This commit is contained in:
Janos Follath 2019-06-13 09:05:41 +01:00
parent ef83f5e98e
commit f08e2654ed
1 changed files with 21 additions and 3 deletions
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24
library/psa_crypto.c
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@ -4771,19 +4771,37 @@ static psa_status_t psa_tls12_prf_input( psa_tls12_prf_key_derivation_t *prf,
return( PSA_ERROR_INVALID_ARGUMENT );
}
#else
static psa_status_t psa_tls12_prf_set_seed( psa_tls12_prf_key_derivation_t *prf,
const uint8_t *data,
size_t data_length )
{
if( prf->state != TLS12_PRF_STATE_INIT )
return( PSA_ERROR_BAD_STATE );
prf->seed = mbedtls_calloc( 1, data_length );
if( prf->seed == NULL )
return( PSA_ERROR_INSUFFICIENT_MEMORY );
memcpy( prf->seed, data, data_length );
prf->seed_length = data_length;
prf->state = TLS12_PRF_STATE_SEED_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) prf;
(void) hash_alg;
(void) data;
(void) data_length;
switch( step )
{
case PSA_KEY_DERIVATION_INPUT_SEED:
return( psa_tls12_prf_set_seed( prf, data, data_length ) );
default:
return( PSA_ERROR_INVALID_ARGUMENT );
}