ECDH alternative implementation support
Add alternative implementation support for ECDH at the higher layer
diff --git a/ChangeLog b/ChangeLog
index 243bd6b..a2a2a36 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -36,6 +36,10 @@
* Clarify ECDSA documentation and improve the sample code to avoid
misunderstandings and potentially dangerous use of the API. Pointed out
by Jean-Philippe Aumasson.
+ * Add support for alternative implementation for ECDH, controlled by new
+ configuration flag MBEDTLS_ECDH_ALT in config.h.
+ Alternative Ecdh is supported for implementation of `mbedtls_ecdh_gen_public`
+ and `mbedtls_ecdh_compute_shared`.
= mbed TLS 2.5.0 branch released 2017-05-17