Add ssl_conf_dhm_min_bitlen()
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index ee32502..a0cd3d2 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -5458,6 +5458,17 @@
 }
 #endif /* MBEDTLS_DHM_C && MBEDTLS_SSL_SRV_C */
 
+#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C)
+/*
+ * Set the minimum length for Diffie-Hellman parameters
+ */
+void mbedtls_ssl_conf_dhm_min_bitlen( mbedtls_ssl_config *conf,
+                                      unsigned int bitlen )
+{
+    conf->dhm_min_bitlen = bitlen;
+}
+#endif /* MBEDTLS_DHM_C && MBEDTLS_SSL_CLI_C */
+
 #if defined(MBEDTLS_SSL_SET_CURVES)
 /*
  * Set the allowed elliptic curves
@@ -6665,6 +6676,10 @@
     conf->renego_period[7] = 0x00;
 #endif
 
+#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C)
+    conf->dhm_min_bitlen = 1024;
+#endif
+
 #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C)
     if( endpoint == MBEDTLS_SSL_IS_SERVER )
     {