85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
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/*
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* Copyright (c) 2015, ARM Limited and Contributors. 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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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 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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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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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 __CRYPTO_MOD_H__
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#define __CRYPTO_MOD_H__
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/* Return values */
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enum crypto_ret_value {
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CRYPTO_SUCCESS = 0,
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CRYPTO_ERR_INIT,
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CRYPTO_ERR_HASH,
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CRYPTO_ERR_SIGNATURE,
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CRYPTO_ERR_UNKNOWN
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};
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/*
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* Cryptographic library descriptor
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*/
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typedef struct crypto_lib_desc_s {
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const char *name;
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/* Initialize library. This function is not expected to fail. All errors
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* must be handled inside the function, asserting or panicing in case of
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* a non-recoverable error */
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void (*init)(void);
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/* Verify a digital signature. Return one of the
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* 'enum crypto_ret_value' options */
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int (*verify_signature)(void *data_ptr, unsigned int data_len,
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void *sig_ptr, unsigned int sig_len,
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void *sig_alg, unsigned int sig_alg_len,
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void *pk_ptr, unsigned int pk_len);
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/* Verify a hash. Return one of the 'enum crypto_ret_value' options */
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int (*verify_hash)(void *data_ptr, unsigned int data_len,
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void *digest_info_ptr, unsigned int digest_info_len);
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} crypto_lib_desc_t;
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/* Public functions */
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void crypto_mod_init(void);
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int crypto_mod_verify_signature(void *data_ptr, unsigned int data_len,
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void *sig_ptr, unsigned int sig_len,
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void *sig_alg, unsigned int sig_alg_len,
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void *pk_ptr, unsigned int pk_len);
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int crypto_mod_verify_hash(void *data_ptr, unsigned int data_len,
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void *digest_info_ptr, unsigned int digest_info_len);
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/* Macro to register a cryptographic library */
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#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash) \
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const crypto_lib_desc_t crypto_lib_desc = { \
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.name = _name, \
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.init = _init, \
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.verify_signature = _verify_signature, \
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.verify_hash = _verify_hash \
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}
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#endif /* __CRYPTO_MOD_H__ */
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