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Diffstat (limited to 'core/include/signed_hdr.h')
| -rw-r--r-- | core/include/signed_hdr.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/core/include/signed_hdr.h b/core/include/signed_hdr.h new file mode 100644 index 0000000..0fd87c2 --- /dev/null +++ b/core/include/signed_hdr.h @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2015, 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. + */ +#ifndef SIGNED_HDR_H +#define SIGNED_HDR_H + +#include <inttypes.h> + +enum shdr_img_type { + SHDR_TA = 0, +}; + +#define SHDR_MAGIC 0x4f545348 + +/** + * struct shdr - signed header + * @magic: magic number must match SHDR_MAGIC + * @img_type: image type, values defined by enum shdr_img_type + * @img_size: image size in bytes + * @algo: algorithm, defined by public key algorithms TEE_ALG_* + * from TEE Internal API specification + * @hash_size: size of the signed hash + * @sig_size: size of the signature + * @hash: hash of an image + * @sig: signature of @hash + */ +struct shdr { + uint32_t magic; + uint32_t img_type; + uint32_t img_size; + uint32_t algo; + uint16_t hash_size; + uint16_t sig_size; + /* + * Commented out element used to visualize the layout dynamic part + * of the struct. + * + * hash is accessed through the macro SHDR_GET_HASH and + * signature is accessed through the macro SHDR_GET_SIG + * + * uint8_t hash[hash_size]; + * uint8_t sig[sig_size]; + */ +}; + +#define SHDR_GET_SIZE(x) (sizeof(struct shdr) + (x)->hash_size + \ + (x)->sig_size) +#define SHDR_GET_HASH(x) (uint8_t *)(((struct shdr *)(x)) + 1) +#define SHDR_GET_SIG(x) (SHDR_GET_HASH(x) + (x)->hash_size) + +#endif /*SIGNED_HDR_H*/ + |