/*
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* Copyright (c) 2015, Linaro Limited
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SIGNED_HDR_H
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#define SIGNED_HDR_H
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#include <inttypes.h>
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enum shdr_img_type {
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SHDR_TA = 0,
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};
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#define SHDR_MAGIC 0x4f545348
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/**
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* struct shdr - signed header
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* @magic: magic number must match SHDR_MAGIC
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* @img_type: image type, values defined by enum shdr_img_type
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* @img_size: image size in bytes
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* @algo: algorithm, defined by public key algorithms TEE_ALG_*
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* from TEE Internal API specification
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* @hash_size: size of the signed hash
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* @sig_size: size of the signature
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* @hash: hash of an image
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* @sig: signature of @hash
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*/
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struct shdr {
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uint32_t magic;
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uint32_t img_type;
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uint32_t img_size;
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uint32_t algo;
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uint16_t hash_size;
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uint16_t sig_size;
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/*
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* Commented out element used to visualize the layout dynamic part
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* of the struct.
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*
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* hash is accessed through the macro SHDR_GET_HASH and
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* signature is accessed through the macro SHDR_GET_SIG
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*
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* uint8_t hash[hash_size];
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* uint8_t sig[sig_size];
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*/
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};
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#define SHDR_GET_SIZE(x) (sizeof(struct shdr) + (x)->hash_size + \
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(x)->sig_size)
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#define SHDR_GET_HASH(x) (uint8_t *)(((struct shdr *)(x)) + 1)
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#define SHDR_GET_SIG(x) (SHDR_GET_HASH(x) + (x)->hash_size)
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#endif /*SIGNED_HDR_H*/
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