Add crypto service

Change-Id: Ifd55a4caaf0b95e3d1b6504863fba112a7e18f15
Signed-off-by: Julian Hall <julian.hall@arm.com>
diff --git a/components/service/crypto/client/cpp/component.cmake b/components/service/crypto/client/cpp/component.cmake
new file mode 100644
index 0000000..18b83e9
--- /dev/null
+++ b/components/service/crypto/client/cpp/component.cmake
@@ -0,0 +1,22 @@
+#-------------------------------------------------------------------------------
+# Copyright (c) 2020, Arm Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#-------------------------------------------------------------------------------
+if (NOT DEFINED TGT)
+	message(FATAL_ERROR "mandatory parameter TGT is not defined.")
+endif()
+
+target_sources(${TGT} PRIVATE
+	"${CMAKE_CURRENT_LIST_DIR}/crypto_client.cpp"
+	)
+
+# The crypto client presents the PSA Crypto API and hence has a dependency on mbedcrypto for functions
+# related to setting key attributes.  A minimal configuration is provided to allow a minimal library
+# to be built.  This configuration may be overridden by other components that have their own
+# dependency on mbedctupto.
+set(MBEDCRYPTO_CONFIG_FILE
+	"${CMAKE_CURRENT_LIST_DIR}/config_mbed_crypto.h"
+	CACHE STRING "Configuration file for mbedcrypto")
+