AES ciphering APIs (setup operation, load key/iv, process ciphering)
This change provides an example of a AES ciphering operation from a
trusted application (TA) using the GPD TEE Core Internal API.
AES TA implements the basics for setting a AES/CTR ciphering session
using the TEE Core Internal API:
- Opening a session toward the AES TA creates AES ciphering session.
- A TA command allows to setup and allocate the ciphering resources.
- A TA command allows to load the AES key.
- A TA command allows to reset the initial vector.
- A TA command allows to cipher an input buffer into an output buffer.
The sample application creates an AES128-CTR encryption session,
provides the AES key and and initial vector then request encryption of
a data buffer. Then it sets up a decryption session, provide the same
key and initial vector and request decryption of the encrypted content.
Finally it checks clear and decoded data are the same.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
diff --git a/aes/ta/user_ta_header_defines.h b/aes/ta/user_ta_header_defines.h
new file mode 100644
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+++ b/aes/ta/user_ta_header_defines.h
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+/*
+ * Copyright (c) 2017, Linaro Limited
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * The name of this file must not be modified
+ */
+
+#ifndef USER_TA_HEADER_DEFINES_H
+#define USER_TA_HEADER_DEFINES_H
+
+#include <aes_ta.h>
+
+#define TA_UUID TA_AES_UUID
+
+#define TA_FLAGS TA_FLAG_EXEC_DDR
+#define TA_STACK_SIZE (2 * 1024)
+#define TA_DATA_SIZE (32 * 1024)
+
+#define TA_CURRENT_TA_EXT_PROPERTIES \
+ { "gp.ta.description", USER_TA_PROP_TYPE_STRING, \
+ "Example of TA using an AES sequence" }, \
+ { "gp.ta.version", USER_TA_PROP_TYPE_U32, &(const uint32_t){ 0x0010 } }
+
+#endif /*USER_TA_HEADER_DEFINES_H*/