diff --git a/library/psa_crypto_ecp.h b/library/psa_crypto_ecp.h
index c6d8437..1083c9b 100644
--- a/library/psa_crypto_ecp.h
+++ b/library/psa_crypto_ecp.h
@@ -82,4 +82,15 @@
     const uint8_t *key_buffer, size_t key_buffer_size,
     uint8_t *data, size_t data_size, size_t *data_length );
 
+/*
+ * BEYOND THIS POINT, TEST DRIVER ENTRY POINTS ONLY.
+ */
+
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+psa_status_t mbedtls_transparent_test_driver_ecp_export_public_key(
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    uint8_t *data, size_t data_size, size_t *data_length );
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+
 #endif /* PSA_CRYPTO_ECP_H */