diff --git a/library/psa_crypto_cipher.h b/library/psa_crypto_cipher.h
index 127f18c..cb85ee1 100644
--- a/library/psa_crypto_cipher.h
+++ b/library/psa_crypto_cipher.h
@@ -206,4 +206,42 @@
  */
 psa_status_t mbedtls_psa_cipher_abort( mbedtls_psa_cipher_operation_t *operation );
 
+/*
+ * BEYOND THIS POINT, TEST DRIVER ENTRY POINTS ONLY.
+ */
+
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+psa_status_t mbedtls_transparent_test_driver_cipher_encrypt_setup(
+    mbedtls_psa_cipher_operation_t *operation,
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    psa_algorithm_t alg );
+
+psa_status_t mbedtls_transparent_test_driver_cipher_decrypt_setup(
+    mbedtls_psa_cipher_operation_t *operation,
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    psa_algorithm_t alg );
+
+psa_status_t mbedtls_transparent_test_driver_cipher_generate_iv(
+    mbedtls_psa_cipher_operation_t *operation,
+    uint8_t *iv, size_t iv_size, size_t *iv_length );
+
+psa_status_t mbedtls_transparent_test_driver_cipher_set_iv(
+    mbedtls_psa_cipher_operation_t *operation,
+    const uint8_t *iv, size_t iv_length );
+
+psa_status_t mbedtls_transparent_test_driver_cipher_update(
+    mbedtls_psa_cipher_operation_t *operation,
+    const uint8_t *input, size_t input_length,
+    uint8_t *output, size_t output_size, size_t *output_length );
+
+psa_status_t mbedtls_transparent_test_driver_cipher_finish(
+    mbedtls_psa_cipher_operation_t *operation,
+    uint8_t *output, size_t output_size, size_t *output_length );
+
+psa_status_t mbedtls_transparent_test_driver_cipher_abort(
+    mbedtls_psa_cipher_operation_t *operation );
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+
 #endif /* PSA_CRYPTO_CIPHER_H */