crypto: decouple the PSA Crypto interface from TF-M flags
This patch cleanup the PSA Crypto interface headers files and
decouples it from TF-M build flag dependencies. The
`psa_key_attributes_t` struct definition previously depended
on various config options. The struct now only has fields
which can be set and read by the client. Hence the client
view of the structure is now defined separately in the
crypto_client_struct.h header.
The platform dependant definitions of the PSA Crypto types
are fixed and hence the crypto_platform.h header is removed
and the contents are moved to other PSA crypto headers.
The previous intermediate solution for hiding the type
differences between crypto server and client view via
`psa_client_core_key_attributes_t` is now removed.
Change-Id: I2644b5a2da3babe561c569ebf5690b3daa576a12
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/interface/include/psa/crypto_client_struct.h b/interface/include/psa/crypto_client_struct.h
new file mode 100644
index 0000000..732441a
--- /dev/null
+++ b/interface/include/psa/crypto_client_struct.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+/**
+ * \file psa/crypto_client_struct.h
+ *
+ * \brief PSA cryptography client key attribute definitions
+ *
+ * \note This file may not be included directly. Applications must
+ * include psa/crypto.h.
+ *
+ * This file contains the definitions of some data structures with
+ * PSA crypto client specific definitions. This is for implementations
+ * with isolation between the Client applications and the Crypto
+ * Server module, it is expected that the front-end and the back-end
+ * would have different versions of the data structure.
+ */
+#ifndef PSA_CRYPTO_CLIENT_STRUCT_H
+#define PSA_CRYPTO_CLIENT_STRUCT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* This is the client view of the `key_attributes` structure. Only
+ * fields which need to be set by the PSA crypto client are present.
+ * The PSA crypto service will maintain a different version of the
+ * data structure internally. */
+struct psa_client_key_attributes_s
+{
+ uint32_t type;
+ uint32_t lifetime;
+ uint32_t id;
+ uint32_t alg;
+ uint32_t usage;
+ uint16_t bits;
+};
+
+#define PSA_CLIENT_KEY_ATTRIBUTES_INIT {0, 0, 0, 0, 0, 0}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PSA_CRYPTO_CLIENT_STRUCT_H */