1 /* 2 * Copyright (C) 2021 The Android Open Source Project 3 * 4 * Permission is hereby granted, free of charge, to any person 5 * obtaining a copy of this software and associated documentation 6 * files (the "Software"), to deal in the Software without 7 * restriction, including without limitation the rights to use, copy, 8 * modify, merge, publish, distribute, sublicense, and/or sell copies 9 * of the Software, and to permit persons to whom the Software is 10 * furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #ifdef AVB_INSIDE_LIBAVB_H 26 #error "You can't include avb_crypto_ops_impl.h in the public header libavb.h." 27 #endif 28 29 #ifndef AVB_COMPILATION 30 #error "Never include this file, it may only be used from internal avb code." 31 #endif 32 33 #ifndef AVB_CRYPTO_OPS_IMPL_H_ 34 #define AVB_CRYPTO_OPS_IMPL_H_ 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #include <libavb/avb_sysdeps.h> 41 42 /* Block size in bytes of a SHA-256 digest. */ 43 #define AVB_SHA256_BLOCK_SIZE 64 44 45 /* Block size in bytes of a SHA-512 digest. */ 46 #define AVB_SHA512_BLOCK_SIZE 128 47 48 /* Data structure used for SHA-256. */ 49 typedef struct { 50 uint32_t h[8]; 51 uint64_t tot_len; 52 size_t len; 53 uint8_t block[2 * AVB_SHA256_BLOCK_SIZE]; 54 } AvbSHA256ImplCtx; 55 56 /* Data structure used for SHA-512. */ 57 typedef struct { 58 uint64_t h[8]; 59 uint64_t tot_len; 60 size_t len; 61 uint8_t block[2 * AVB_SHA512_BLOCK_SIZE]; 62 } AvbSHA512ImplCtx; 63 64 #define AVB_SHA256_CONTEXT_SIZE sizeof(AvbSHA256ImplCtx) 65 #define AVB_SHA512_CONTEXT_SIZE sizeof(AvbSHA512ImplCtx) 66 67 #ifdef __cplusplus 68 } 69 #endif 70 71 #endif /* AVB_CRYPTO_OPS_IMPL_H_ */ 72