ECDSA alternative support
Support for alternative implementation of ECDSA, at the higher layer
diff --git a/ChangeLog b/ChangeLog
index 243bd6b..e9be97b 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 ECDSA, controlled by new
+ configuration flag MBEDTLS_ECDSA_ALT in config.h.
+ Alternative Ecdsa is supported for implementation of `mbedtls_ecdsa_sign`
+ and `mbedtls_ecdsa_verify`.
= mbed TLS 2.5.0 branch released 2017-05-17