1 /* 2 * Copyright (C) 2021 - This file is part of libecc project 3 * 4 * Authors: 5 * Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr> 6 * Ryad BENADJILA <ryadbenadjila@gmail.com> 7 * 8 * This software is licensed under a dual BSD and GPL v2 license. 9 * See LICENSE file at the root folder of the project. 10 */ 11 #include <libecc/lib_ecc_config.h> 12 #ifdef WITH_HASH_SM3 13 14 #ifndef __SM3_H__ 15 #define __SM3_H__ 16 17 #include <libecc/words/words.h> 18 #include <libecc/utils/utils.h> 19 20 #define SM3_STATE_SIZE 8 /* in 32 bits word */ 21 #define SM3_BLOCK_SIZE 64 22 #define SM3_DIGEST_SIZE 32 23 #define SM3_DIGEST_SIZE_BITS 256 24 25 /* Compute max hash digest and block sizes */ 26 #ifndef MAX_DIGEST_SIZE 27 #define MAX_DIGEST_SIZE 0 28 #endif 29 #if (MAX_DIGEST_SIZE < SM3_DIGEST_SIZE) 30 #undef MAX_DIGEST_SIZE 31 #define MAX_DIGEST_SIZE SM3_DIGEST_SIZE 32 #endif 33 34 #ifndef MAX_DIGEST_SIZE_BITS 35 #define MAX_DIGEST_SIZE_BITS 0 36 #endif 37 #if (MAX_DIGEST_SIZE_BITS < SM3_DIGEST_SIZE_BITS) 38 #undef MAX_DIGEST_SIZE_BITS 39 #define MAX_DIGEST_SIZE_BITS SM3_DIGEST_SIZE_BITS 40 #endif 41 42 #ifndef MAX_BLOCK_SIZE 43 #define MAX_BLOCK_SIZE 0 44 #endif 45 #if (MAX_BLOCK_SIZE < SM3_BLOCK_SIZE) 46 #undef MAX_BLOCK_SIZE 47 #define MAX_BLOCK_SIZE SM3_BLOCK_SIZE 48 #endif 49 50 #define SM3_HASH_MAGIC ((word_t)(0x2947510312849204ULL)) 51 #define SM3_HASH_CHECK_INITIALIZED(A, ret, err) \ 52 MUST_HAVE((((void *)(A)) != NULL) && ((A)->magic == SM3_HASH_MAGIC), ret, err) 53 54 typedef struct { 55 /* Number of bytes processed */ 56 u64 sm3_total; 57 /* Internal state */ 58 u32 sm3_state[SM3_STATE_SIZE]; 59 /* Internal buffer to handle updates in a block */ 60 u8 sm3_buffer[SM3_BLOCK_SIZE]; 61 /* Initialization magic value */ 62 word_t magic; 63 } sm3_context; 64 65 ATTRIBUTE_WARN_UNUSED_RET int sm3_init(sm3_context *ctx); 66 ATTRIBUTE_WARN_UNUSED_RET int sm3_update(sm3_context *ctx, const u8 *input, u32 ilen); 67 ATTRIBUTE_WARN_UNUSED_RET int sm3_final(sm3_context *ctx, u8 output[SM3_DIGEST_SIZE]); 68 ATTRIBUTE_WARN_UNUSED_RET int sm3_scattered(const u8 **inputs, const u32 *ilens, 69 u8 output[SM3_DIGEST_SIZE]); 70 ATTRIBUTE_WARN_UNUSED_RET int sm3(const u8 *input, u32 ilen, u8 output[SM3_DIGEST_SIZE]); 71 72 #endif /* __SM3_H__ */ 73 #endif /* WITH_HASH_SM3 */ 74