Juan Castillo | 8e55d93 | 2015-04-02 09:48:16 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef __CRYPTO_MOD_H__ |
| 32 | #define __CRYPTO_MOD_H__ |
| 33 | |
| 34 | /* Return values */ |
| 35 | enum crypto_ret_value { |
| 36 | CRYPTO_SUCCESS = 0, |
| 37 | CRYPTO_ERR_INIT, |
| 38 | CRYPTO_ERR_HASH, |
| 39 | CRYPTO_ERR_SIGNATURE, |
| 40 | CRYPTO_ERR_UNKNOWN |
| 41 | }; |
| 42 | |
| 43 | /* |
| 44 | * Cryptographic library descriptor |
| 45 | */ |
| 46 | typedef struct crypto_lib_desc_s { |
| 47 | const char *name; |
| 48 | |
| 49 | /* Initialize library. This function is not expected to fail. All errors |
| 50 | * must be handled inside the function, asserting or panicing in case of |
| 51 | * a non-recoverable error */ |
| 52 | void (*init)(void); |
| 53 | |
| 54 | /* Verify a digital signature. Return one of the |
| 55 | * 'enum crypto_ret_value' options */ |
| 56 | int (*verify_signature)(void *data_ptr, unsigned int data_len, |
| 57 | void *sig_ptr, unsigned int sig_len, |
| 58 | void *sig_alg, unsigned int sig_alg_len, |
| 59 | void *pk_ptr, unsigned int pk_len); |
| 60 | |
| 61 | /* Verify a hash. Return one of the 'enum crypto_ret_value' options */ |
| 62 | int (*verify_hash)(void *data_ptr, unsigned int data_len, |
| 63 | void *digest_info_ptr, unsigned int digest_info_len); |
| 64 | } crypto_lib_desc_t; |
| 65 | |
| 66 | /* Public functions */ |
| 67 | void crypto_mod_init(void); |
| 68 | int crypto_mod_verify_signature(void *data_ptr, unsigned int data_len, |
| 69 | void *sig_ptr, unsigned int sig_len, |
| 70 | void *sig_alg, unsigned int sig_alg_len, |
| 71 | void *pk_ptr, unsigned int pk_len); |
| 72 | int crypto_mod_verify_hash(void *data_ptr, unsigned int data_len, |
| 73 | void *digest_info_ptr, unsigned int digest_info_len); |
| 74 | |
| 75 | /* Macro to register a cryptographic library */ |
| 76 | #define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash) \ |
| 77 | const crypto_lib_desc_t crypto_lib_desc = { \ |
| 78 | .name = _name, \ |
| 79 | .init = _init, \ |
| 80 | .verify_signature = _verify_signature, \ |
| 81 | .verify_hash = _verify_hash \ |
| 82 | } |
| 83 | |
| 84 | #endif /* __CRYPTO_MOD_H__ */ |