diff --git a/include/polarssl/ecp.h b/include/polarssl/ecp.h
index 7192f1e..9b83bc5 100644
--- a/include/polarssl/ecp.h
+++ b/include/polarssl/ecp.h
@@ -635,6 +635,18 @@
 int ecp_gen_key( ecp_group_id grp_id, ecp_keypair *key,
                 int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
 
+/**
+ * \brief           Check a public-private key pair
+ *
+ * \param pub       Keypair structure holding a public key
+ * \param prv       Keypair structure holding a private (plus public) key
+ *
+ * \return          0 if successfull (keys are valid and match), or
+ *                  POLARSSL_ERR_ECP_BAD_INPUT_DATA, or
+ *                  a POLARSSL_ERR_ECP_XXX or POLARSSL_ERR_MPI_XXX code.
+ */
+int ecp_check_pub_priv( const ecp_keypair *pub, const ecp_keypair *prv );
+
 #if defined(POLARSSL_SELF_TEST)
 /**
  * \brief          Checkup routine