diff --git a/include/mbedtls/md.h b/include/mbedtls/md.h
index 2b668f5..243e57a 100644
--- a/include/mbedtls/md.h
+++ b/include/mbedtls/md.h
@@ -138,6 +138,20 @@
 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type );
 
 /**
+ * \brief           This function returns the message-digest information
+ *                  from the given context.
+ *
+ * \param ctx       The context from which to extract the information.
+ *                  This must be initialized (or \c NULL).
+ *
+ * \return          The message-digest information associated with \p ctx.
+ * \return          \c NULL if \p ctx is \c NULL.
+ */
+const mbedtls_md_info_t *mbedtls_md_info_from_ctx(
+                                        const mbedtls_md_context_t *ctx );
+
+
+/**
  * \brief           This function initializes a message-digest context without
  *                  binding it to a particular message-digest algorithm.
  *