hwcrypto.h
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/*
* Copyright (C) 2016 The Android Open Source Project
* Copyright NXP 2018
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef TRUSTY_INTERFACE_HWCRYPTO_H_
#define TRUSTY_INTERFACE_HWCRYPTO_H_
#include <trusty/sysdeps.h>
#define HWCRYPTO_PORT "com.android.trusty.hwcrypto"
#define HWCRYPTO_MAX_BUFFER_LENGTH 2048
enum hwcrypto_command {
HWCRYPTO_REQ_SHIFT = 1,
HWCRYPTO_RESP_BIT = 1,
HWCRYPTO_HASH = (1 << HWCRYPTO_REQ_SHIFT),
HWCRYPTO_ENCAP_BLOB = (2 << HWCRYPTO_REQ_SHIFT),
HWCRYPTO_GEN_RNG = (3 << HWCRYPTO_REQ_SHIFT),
};
/**
* enum hwcrypto_error - error codes for HWCRYPTO protocol
* @HWCRYPTO_ERROR_NONE: All OK
* @HWCRYPTO_ERROR_INVALID: Invalid input
* @HWCRYPTO_ERROR_INTERNAL: Error occurred during an operation in Trusty
*/
enum hwcrypto_error {
HWCRYPTO_ERROR_NONE = 0,
HWCRYPTO_ERROR_INVALID = 1,
HWCRYPTO_ERROR_INTERNAL = 2,
};
enum hwcrypto_hash_algo {
SHA1 = 0,
SHA256
};
/**
* hwcrypto_message - Serial header for communicating with hwcrypto server
* @cmd: the command. Payload must be a serialized buffer of the
* corresponding request object.
* @result: resulting error code for message, one of hwcrypto_error.
* @payload: start of the serialized command specific payload
*/
struct hwcrypto_message {
uint32_t cmd;
uint32_t result;
uint8_t payload[0];
};
/**
* hwcrypto_hash_msg - Serial header for communicating with hwcrypto server
* @in_addr: start address of the input buf.
* @in_len: size of the input buf.
* @out_addr: start addrss of the output buf.
* @out_len: size of the output buf.
* @algo: hash algorithm expect to use.
*/
typedef struct hwcrypto_hash_msg {
uint32_t in_addr;
uint32_t in_len;
uint32_t out_addr;
uint32_t out_len;
enum hwcrypto_hash_algo algo;
} hwcrypto_hash_msg;
/**
* @plain_pa: physical start address of the plain blob buf.
* @plain_size: size of the plain blob.
* @blob: physical start addrss of the output buf.
*/
typedef struct hwcrypto_blob_msg {
uint32_t plain_pa;
uint32_t plain_size;
uint32_t blob_pa;
}hwcrypto_blob_msg;
/**
* @buf: physical start address of the output rng buf.
* @len: size of required rng.
*/
typedef struct hwcrypto_rng_msg {
uint32_t buf;
uint32_t len;
}hwcrypto_rng_msg;
#endif /* TRUSTY_INTERFACE_HWCRYPTO_H_ */