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Setup & Import HMAC keys in ssl_tls12_populate_transform()

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Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Neil Armstrong 2022-02-23 09:29:14 +01:00
parent 39b8e7dde4
commit 0760ade761
1 changed files with 36 additions and 0 deletions
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36
library/ssl_tls.c
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@ -7293,6 +7293,42 @@ static int ssl_tls12_populate_transform( mbedtls_ssl_transform *transform,
For AEAD-based ciphersuites, there is nothing to do here. */
if( mac_key_len != 0 )
{
#if defined(MBEDTLS_USE_PSA_CRYPTO)
alg = mbedtls_psa_translate_md( ciphersuite_info->mac );
if( alg == 0 )
{
ret = psa_ssl_status_to_mbedtls( PSA_ERROR_NOT_SUPPORTED );
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_md_type_to_psa", ret );
goto end;
}
transform->psa_mac_alg = PSA_ALG_HMAC( alg );
psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_SIGN_MESSAGE );
psa_set_key_algorithm( &attributes, PSA_ALG_HMAC( alg ) );
psa_set_key_type( &attributes, PSA_KEY_TYPE_HMAC );
if( ( status = psa_import_key( &attributes,
mac_enc, mac_key_len,
&transform->psa_mac_enc ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 3, "psa_import_mac_key", (int)status );
ret = psa_ssl_status_to_mbedtls( status );
MBEDTLS_SSL_DEBUG_RET( 1, "psa_import_mac_key", ret );
goto end;
}
psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_VERIFY_HASH );
if( ( status = psa_import_key( &attributes,
mac_dec, mac_key_len,
&transform->psa_mac_dec ) ) != PSA_SUCCESS )
{
ret = psa_ssl_status_to_mbedtls( status );
MBEDTLS_SSL_DEBUG_RET( 1, "psa_import_mac_key", ret );
goto end;
}
#endif
ret = mbedtls_md_hmac_starts( &transform->md_ctx_enc, mac_enc, mac_key_len );
if( ret != 0 )
goto end;