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New function mbedtls_dhm_get_value to copy a field of a DHM context

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Reduce the need to break the DHM abstraction by accessing the context directly.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2021-05-27 22:50:53 +02:00
parent 487bbf6805
commit 71acc6e8d9
5 changed files with 99 additions and 4 deletions
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6
library/ssl_tls.c
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@ -3871,8 +3871,10 @@ int mbedtls_ssl_conf_dh_param_ctx( mbedtls_ssl_config *conf, mbedtls_dhm_context
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( ( ret = mbedtls_mpi_copy( &conf->dhm_P, &dhm_ctx->P ) ) != 0 ||
( ret = mbedtls_mpi_copy( &conf->dhm_G, &dhm_ctx->G ) ) != 0 )
if( ( ret = mbedtls_dhm_get_value( &conf->dhm_P, dhm_ctx,
MBEDTLS_DHM_PARAM_P ) ) != 0 ||
( ret = mbedtls_dhm_get_value( &conf->dhm_G, dhm_ctx,
MBEDTLS_DHM_PARAM_G ) ) != 0 )
{
mbedtls_mpi_free( &conf->dhm_P );
mbedtls_mpi_free( &conf->dhm_G );