Update ecdh.h
Changs based on review comments
@@ -101,8 +101,8 @@ int mbedtls_ecdh_gen_public( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp
* \see ecp.h
*
* \note If \p f_rng is not NULL, it is used to implement
- * countermeasures against potential elaborate timing
- * attacks. For more information, see mbedtls_ecp_mul().
+ * countermeasures against side-channel attacks.
+ * For more information, see mbedtls_ecp_mul().
*
* \param grp The ECP group.
* \param z The destination MPI (shared secret).
@@ -253,8 +253,8 @@ int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx,
* and servers.
*
* \note If \p f_rng is not NULL, it is used to implement
- * countermeasures against potential elaborate timing
- * attacks. For more information, see mbedtls_ecp_mul().
+ * countermeasures against side-channel attacks.
+ * For more information, see mbedtls_ecp_mul().
*
* \see ecp.h
*
